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Ravi Ranjan
( out of 132 reviews )

Ravi Ranjan, MD, PhD

Languages spoken: English

Clinical Locations

Primary Location

Cardiovascular Center

Cardiovascular Center
50 N Medical Dr
Salt Lake City , UT 84132

University of Utah Hospital

50 N Medical Dr
Salt Lake City , UT 84132

Blanding Family Practice

802 South 200 West
Blanding , UT 84511

Ravi Ranjan, M.D., Ph.D., is a Cardiac Electrophysiologist in the Division of Cardiovascular Medicine. His clinical interests include the ablation of complex cardiac arrhythmias such as atrial fibrillation, ventricular tachycardia, and supraventricular tachycardia. He also has a strong interest in cardiac device–based therapies, including cardiac resynchronization therapy, implantable cardioverter-defibrillators (ICDs), and pacemakers.

Dr. Ranjan has been a faculty member at the University of Utah since 2010 and is a tenured Professor of Medicine and is the section chief of Cardiac Electrophysiology. He received his medical degree from Harvard Medical School, completed an internal medicine residency at Massachusetts General Hospital, and pursued both cardiology and cardiac electrophysiology fellowships at Johns Hopkins Hospital.

He has built a large clinical cardiology and electrophysiology practice in Utah and leads a robust, extramurally funded research program (https://cvrti.utah.edu/the-ranjan-laboratory/). His research focuses on tissue- and organ-scale physiology and pathophysiology in conditions such as atrial fibrillation, atypical left atrial flutter, ventricular tachycardia, and cardiac stereotactic radiotherapy. His group integrates cardiac computational modeling, machine learning, preclinical experimental models, cardiac magnetic resonance imaging, biochemical assays, electrophysiological mapping techniques, and human clinical data to study disease progression, develop treatment strategies, and advance understanding of cardiac physiology.

Specialties

Board Certification

American Board of Internal Medicine (Sub: Clinical Cardiac Electrophysiology)
American Board of Internal Medicine (Sub: Cardiovascular Disease)

Patient Rating

Patients consistently praise Dr. Ranjan and his team for knowledgeable, thorough care and clear explanations of diagnoses and treatment options. Reviewers report that he listens, takes time to answer questions, involves patients in decision-making, and communicates with empathy and reassurance. Many comments also commend the clinic staff for professionalism and smooth procedural and follow-up care, including the convenience of virtual visits.

Generated via Patient Reviews

4.7 /5
( out of 132 reviews )

The patient rating score is an average of all responses on our patient experience survey. The rating averages scores for all questions about care from our providers. The scale on which responses are measured is 1 to 5 with 5 being the best score.


May 30, 2026
UNIVERSITY HOSPITAL

Excellent bedside manner, listened to our questions and concerns, provided feedback on next course of action.

May 30, 2026
UNIVERSITY HOSPITAL

VERY GOOD

May 20, 2026
EXTERNAL SITE

Great care and personality

May 17, 2026
UNIVERSITY HOSPITAL

We prefer to schedule appointments when Dr. Ranjan is in clinic. He always answers questions and explains new everything to our understanding. Our confidence level in him and our appreciation for his care and concern have continued to increase over years of interaction with him.

May 17, 2026
UNIVERSITY HOSPITAL

see previous comment. He is excellent in all regards.

Apr 22, 2026
EXTERNAL SITE

Very caring and thourgh in his explanitions

Apr 20, 2026
UNIVERSITY HOSPITAL

Excellent. Very easy to grasp. Unassuming and relaxed. Ranjan's helper, Rasheed Shaw, is a talented, informative, friendly man. He is now a fellow in cardiology

Apr 05, 2026
UNIVERSITY HOSPITAL

This was not the individual I saw on my visit.

Mar 30, 2026
UNIVERSITY HOSPITAL

I have only met with Dr Ranjan once but I was impressed with his knowledge, professionalism and give honest answers along with not being offended when I questioned info the he gave me.

Mar 20, 2026
EXTERNAL SITE

The change to this doctor was a great one. I did see the PA but he was wonderful.

Mar 18, 2026
EXTERNAL SITE

Very good doctor

Feb 21, 2026
UNIVERSITY HOSPITAL

Dr. Ravi Ranjan is a very good person and very good doctor he is talking with us about all medical issues very nicely and good advice

Feb 21, 2026
UNIVERSITY HOSPITAL

The fellow did most of the education and analysis! He was great!

Feb 02, 2026
EXTERNAL SITE

Excellent and caring doctor

Jan 27, 2026
EXTERNAL SITE

He's a wonderful doctor

Jan 24, 2026
UNIVERSITY HOSPITAL

Excellent patient care.

Dec 15, 2025
UNIVERSITY HOSPITAL

Very concise, thorough, plain spoken

Dec 15, 2025
UNIVERSITY HOSPITAL

Professional, patient, listened, open to my questions and concerns, offered options and Recommendations. After this appointment, my first and only, I have faith that I am in good hands with him in the future as well.

Nov 23, 2025
EXTERNAL SITE

He gave us confidence of his training and capabilities.

Nov 22, 2025
EXTERNAL SITE

Thank you, for offering services in vernal, utah Thank you for your care and assistance in improving my health and heart care

Nov 19, 2025
EXTERNAL SITE

Involved me in creating a treatment plan instead of just telling me what was going to happen. He listened to my input like it mattered. Then asked if I agreed to what he was suggesting. This opened up an avenue for him to educate me. It's nice to feel you understand your treatment and have a voice in it!

Oct 29, 2025
EXTERNAL SITE

Very happy with this doctor. He put my mind at ease with the symptoms I was having.

Oct 21, 2025
EXTERNAL SITE

Dr. Ranjan was excellent in explaining everything I needed to know. He went above and beyond letting me know my diagnoses and how to proceed going forward. I felt he was genuinely concerned about my future care and would certainly recommend him to friends and family.

Oct 18, 2025
UNIVERSITY HOSPITAL

As expected¿¿ the best!

Sep 01, 2025
UNIVERSITY HOSPITAL

Wow! He is a wonderful doctor. He makes me feel like family.

Aug 31, 2025
UNIVERSITY HOSPITAL

I appreciated his explanation of my and offered options for treatment.

Aug 05, 2025
UNIVERSITY HOSPITAL

I traveled to Utah to consult with Dr. Ranjan about a long-lasting, degrading cardiac issue. During that appointment, I overheard nurses out in the hall talk about how brilliant Dr. Ranjan is, and I believe that. He took a long time in the consultation appointment to understand my history and what I needed. When I woke up from the procedure, his face was the first thing I remember seeing and teared up at his statement that he thought the procedure was a success. Throughout my interactions with Dr. Ranjan, it was obvious to me that he is motivated by wanting to help his patients, and that came across in his care for me. I will never forget Dr. Ranjan and the entire U of U Hospital staff who cared for me and will continue to pray to God that He continues to guide Dr. Ranjan and U of U Hospital staff as they care for others.

Jul 18, 2025
UNIVERSITY HOSPITAL

Dr.Raman is very caring.

Jun 15, 2025
UNIVERSITY HOSPITAL

Dr. Ranjan was very informative and thorough about options for treating my heart condition.

Jun 14, 2025
UNIVERSITY HOSPITAL

Dr. Ranjan was very informative and open about options re: the steps needed to address my particular problem. He listened and suggested a couple of paths forward in dealing with my particular needs. He was kind and very informative in helping me lay out a path forward to hopefully alleviate my particular symptoms.

May 10, 2025
UNIVERSITY HOSPITAL

He took a direct approach. He made sure I understood my condition and the plan for the coming months. I liked his upfront and direct approach.

May 04, 2025
UNIVERSITY HOSPITAL

Dr Ranjan and his team are first rate!

Apr 23, 2025
EXTERNAL SITE

He is very skilled and very well consumed in what he is trying to tell you I appreciate that

Apr 20, 2025
UNIVERSITY HOSPITAL

Listened carefully and was understanding and supportive.

Apr 06, 2025
UNIVERSITY HOSPITAL

Wonderful , caring Doctor

Mar 09, 2025
UNIVERSITY HOSPITAL

Dr Raman patiently explained my treatment options and approached me with compassion and respect. I left the appointment armed with much needed information.

Feb 26, 2025
UNIVERSITY HOSPITAL

He is very good.

Feb 23, 2025
UNIVERSITY HOSPITAL

Very kind & so careful to check every little detail

Feb 18, 2025
UNIVERSITY HOSPITAL

My husband has dementia and he was very good at handling the whole situation

Feb 02, 2025
UNIVERSITY HOSPITAL

was very impressed with the doctor. He put me at ease. Appreciated it very much. Thank you.

Jan 19, 2025
SUGAR HOUSE HEALTH CENTER

Dr. Ranjan is an excellent doctor and surgeon. We are very pleased to have him take care of Ed.

Dec 19, 2024
UH HOSPITALS AND CLINICS

An outstanding clinician and human being.

Dec 19, 2024
BASIN CLINIC VERNAL

He s a great doctor. He is very precise and I feel very well taken care of. His staff are all really great

Dec 18, 2024
UH HOSPITALS AND CLINICS

Very calming and informative. He spent time with my mother who is just overwhelmed with this recent heart failure diagnosis. He made her feel listened too and did not rush her appt. He made sure all our questions were answered. I give him 5 stars!

Dec 17, 2024
BASIN CLINIC VERNAL

Great job with the whole process of ablation to pacemaker and followup.

Dec 15, 2024
UH HOSPITALS AND CLINICS

Extremely Intelligent MD Picked up one of my diagnosis that might be related to my heart condition. I feel very confident privileged to have a doctor with his Experience

Dec 14, 2024
UH HOSPITALS AND CLINICS

He is great doctor

Dec 09, 2024
UH HOSPITALS AND CLINICS

Penny checked my pacemaker. She's always focused, but willing to answer questions. Dr. Ranjan discussed one lead not working. He wanted to know about our car accident from a personal and medical perspective. After learning about my wife's chest injuries he showed sincere empathy and professionalism in determining that could definitely be the cause of the lead not functioning. Before leaving the appointment he said, "I have treated you for a very long time and we'll get you both through this." Encouraging, positive words we needed to hear.

Nov 19, 2024
UH HOSPITALS AND CLINICS

He is wonderful.

Jul 30, 2024
UH HOSPITALS AND CLINICS

The doctor explained my operation very clearly

Jul 16, 2024
EXTERNAL SITE

Really liked him his a good Doctor would recommend him to everyone.

Jun 29, 2024
UH HOSPITALS AND CLINICS

I came in knowing from previous experience that something isn't right with my heart. When the tests showed nothing, I was given a monitor to suffice my worries. Because I have had heart problems in the past, I know something isn't right. It may not be physical or showing on tests, but there is something wrong and I know it. I would like to be led in a different direction to help find answers or to something else that may be causing the pain. He was nice but my visit left me discouraged and not knowing where to go.

May 11, 2024
UH HOSPITALS AND CLINICS

Knowledgeable and caring

May 04, 2024
UH HOSPITALS AND CLINICS

Excellent Doctor in every way. I highly recomment him.

Apr 27, 2024
UH HOSPITALS AND CLINICS

Excellent bedside manner and great communicator.

Mar 30, 2024
EXTERNAL SITE

I trust the doctor and his team.

Mar 23, 2024
UH HOSPITALS AND CLINICS

Dr.Ravi Ranjan,was very professional and knowledgeable I like him!

Mar 22, 2024
EXTERNAL SITE

How clearly he explained everything to me

Mar 19, 2024
EXTERNAL SITE

very good Doctor

Feb 25, 2024
UH HOSPITALS AND CLINICS

Seemed to be very competent and caring.

Feb 25, 2024
UH HOSPITALS AND CLINICS

He explained my condition and my care options very well and answered all mine and my husbands questions.

Feb 18, 2024
UH HOSPITALS AND CLINICS

Seems very competent and congenial.

Feb 17, 2024
UH HOSPITALS AND CLINICS

I did not have anything serious, but I did not have anthing serious, but I didn't know that, I just knew I was having heart pressure and discomfort. Once the doctor explained they were PAC and what the meant, I was comforted. But I felt that I was put down because it was trivial and why was I there.

Feb 17, 2024
UH HOSPITALS AND CLINICS

Dr. Ranjan is great. Would recommend him highly.

Feb 11, 2024
UH HOSPITALS AND CLINICS

He listens. Gave a couple options. I felt comfortable with him and able to ask any question.

Feb 10, 2024
UH HOSPITALS AND CLINICS

Completely satisfied! Dr. Ranjan and team are exceptional! Great listeners, empathetic, experienced and problem solvers. Recommend them to all!

Feb 04, 2024
UH HOSPITALS AND CLINICS

Excellent care

Feb 04, 2024
UH HOSPITALS AND CLINICS

Very knowledgeable & thorough. Positive & confident with treatment plan.

Feb 03, 2024
UH HOSPITALS AND CLINICS

I couldn't be happier with Dr. Ranjan, I would recommend him to anyone. His concern to quickly diagnose and treat my problem was very much appreciated by myself and wife.

Feb 03, 2024
UH HOSPITALS AND CLINICS

Very friendly and knowledgeable.

Jan 26, 2024
EXTERNAL SITE

Very caring Dr

Jan 25, 2024
EXTERNAL SITE

Great doctor and staff.

Dec 24, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan is excellent! I highly recommend him if you're experiencing any cardiovascular issues. His team is also top notch.

Dec 16, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan was very respectful and nice. He explained all my options and helped me decide what my treatment should be.

Dec 10, 2023
UH HOSPITALS AND CLINICS

Exceptional. Brilliant and a willingness to listen to the patient. His candor was refreshing.

Dec 02, 2023
UH HOSPITALS AND CLINICS

Ravi ranjan is a great Dr between hin his team I've been taken care of many years thanks Dr ranjam

Nov 19, 2023
UH HOSPITALS AND CLINICS

Everybody was respectful and informative

Nov 05, 2023
UH HOSPITALS AND CLINICS

Very professional

Nov 04, 2023
UH HOSPITALS AND CLINICS

He was very kind and listened to me. And explained changes to my care. I fully trust him with my care and appreciate him.

Oct 19, 2023
EXTERNAL SITE

He is very thorough and seems to care about my problem

Oct 01, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan presumed I knew nothing about my condition. Took time to explain and describe. He eventually understood that I had a basic knowledge of my condition.

Aug 24, 2023
EXTERNAL SITE

He is kind and patient. He tries to make sure I understand my treatment. He inspires confidence

Aug 24, 2023
EXTERNAL SITE

There are no complaints does a great job thank you

Aug 06, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan has been great to me through the years.

Aug 04, 2023
UH HOSPITALS AND CLINICS

Very nice fellow.

Aug 04, 2023
UH HOSPITALS AND CLINICS

Excelente

Aug 03, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan is very knowledgable. He is excellent at what he does. I do feel that I have to bring things up to him for him to explain them to me. It would be helpful if he were to offer me what things may come up; side effects, symptoms, what he is looking for, etc. I haven't experienced my heart condition before and don't know what questions to ask, so I am waiting for him to tell me what the possibilities are. Otherwise things have been great.

Jul 14, 2023
UH HOSPITALS AND CLINICS

He explained my heart history very well

Jul 12, 2023
UH HOSPITALS AND CLINICS

A wonderful physician, he cared for all my heart health care problems, putting my fears to rest & I fully trusted his counsel with great success ! I now have a peace about my heart health, and a chance for a better future, & I thank him greatly for that opportunity!

Jul 11, 2023
UH HOSPITALS AND CLINICS

He is an outstanding Doctor

Jul 11, 2023
UH HOSPITALS AND CLINICS

Dr Ranjan has taken very good care of me with 2 ablations one a cardioversion and the other a catheter ablation and has helped keep my heart in rhythm

Jul 11, 2023
UH HOSPITALS AND CLINICS

He was outstanding. Informative, forthright and candid

Jul 05, 2023
UH HOSPITALS AND CLINICS

Doctor Ranjan is the best doctor anyone could ever have thanks to him

May 24, 2023
UH HOSPITALS AND CLINICS

I totally trust his knowledge.

May 24, 2023
UH HOSPITALS AND CLINICS

Thank you for the time you gave us. Other doctors offices make us feel like cattle being moved as quickly as possible. You took the time to talk to us. Thank you!

May 18, 2023
EXTERNAL SITE

Completely satisfactory!

May 16, 2023
EXTERNAL SITE

He was there Had someone take his place

May 10, 2023
UH HOSPITALS AND CLINICS

Dr Ranjan put me at ease, explained everything well, took the time to answer my questions and was attentive to my concerns.

May 02, 2023
UH HOSPITALS AND CLINICS

Very good, explained what was ment by each statement made in medical terms

May 02, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan provides expert care with friendliness which makes me feel secure about my treatment.

Apr 25, 2023
UH HOSPITALS AND CLINICS

He is excellent! Very smart and kind. An A+++

Apr 25, 2023
UH HOSPITALS AND CLINICS

The epitome of professionalism and top of the medical industry that he represents.

Apr 23, 2023
EXTERNAL SITE

It was worth while.

Apr 22, 2023
EXTERNAL SITE

wonderful

Apr 22, 2023
EXTERNAL SITE

This was my first visit with Dr Ranjan, so my problem was not of his doing.

Apr 19, 2023
EXTERNAL SITE

He is a very good doctor, and made me feel like I mattered

Apr 18, 2023
EXTERNAL SITE

Such an extremely caring & encouraging Doctor! He listens to your concerns and explains problems with the heart & what treatments can benefit or correct the malfunction. He is just a top notch Doctor & I highly recommend him to anyone, for exceptional care

Apr 11, 2023
UH HOSPITALS AND CLINICS

Great Doctor

Apr 04, 2023
UH HOSPITALS AND CLINICS

I think Dr. Ranjan is a very skilled doctor I appreciate all the care he has given me.

Mar 26, 2023
UH HOSPITALS AND CLINICS

He's been my doctor for a long time now and I trust him with my health

Mar 22, 2023
EXTERNAL SITE

I feel like he is really up on the state of my help and working to help me

Mar 21, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan is very considerate, kind, and is willing to discuss better treatments.

Mar 14, 2023
UH HOSPITALS AND CLINICS

Very informative

Mar 07, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan and his team are excellent. They really listened to me and answered the many questions I had. I am glad I chose him to be my cardiologist.

Feb 28, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan is an exceptional care provider.

Feb 28, 2023
UH HOSPITALS AND CLINICS

I have always been very happy with the care Ive received from Dr. Ranjan. His approach, compassion and knowledge is exceptional in dealing with my arrhythmia. I do not feel rushed during my appointments and his calm demeanor is very comforting. I always get every question answered. Highly recommend Dr Ranjan!!

Feb 28, 2023
UH HOSPITALS AND CLINICS

Dr Ranjan is very knowledgeable, caring and professional. Thanks

Feb 28, 2023
UH HOSPITALS AND CLINICS

Highly knowledgeable, very warm and caring

Feb 14, 2023
UH HOSPITALS AND CLINICS

Again, he solved a problem, unlike several other Docters.

Feb 14, 2023
UH HOSPITALS AND CLINICS

Dr. Ranjan always listens to me and my concerns an give sage advise and recommendation. He is very professional but also very approachable. I feel at ease discussing my health options with him.

Feb 09, 2023
UH HOSPITALS AND CLINICS

He was very professional and explained to me in detail what the problem was. Offered me alternatives if I feel not well and encourage me to keep a healthy lifestyle..

Feb 08, 2023
EXTERNAL SITE

I TRUST HIM!

Feb 07, 2023
UH HOSPITALS AND CLINICS

I beleive he is a very fine person and doctor who cares for his patients.

Feb 01, 2023
UH HOSPITALS AND CLINICS

Always a good experience.

Jan 31, 2023
UH HOSPITALS AND CLINICS

Dr. Ran Jan was very kind.

Jan 31, 2023
UH HOSPITALS AND CLINICS

I was quite impressed with Dr Ranjan. I was there to talk about an Afib issues and I asked him some tangental questions about awareness and medications. His answers/observations were quite enlightening, and appreciated. And overall, he struck me as an individual who actually wants to see his patients do/get better. I quite appreciate him as a Dr and a professional.

Jan 25, 2023
EXTERNAL SITE

Such a good experience with a top notch team that comes with Dr Ranjan to Vernal! He is such a great Doctor.. a very brilliant, caring person ,always encouraging & able to discuss options & alleviate anxieties about what comes next in my plan of care . I highly recommend Dr Ranjan and am so grateful to have him as my doctor!

Jan 24, 2023
EXTERNAL SITE

Im very comfortable talking to dr Ranjan. I sense he is excellent and passionate about his position. Still gives me his time in discussing options and solutions

Jan 21, 2023
EXTERNAL SITE

The team has done a great job in improving my well being. Thanks!

Jan 12, 2023
UH HOSPITALS AND CLINICS

Dr Ranjan told me my ECG looked fantastic...and I attribute that to the procedure (heart ablation) he performed on me... I'm very satisfied with Dr Ranjan and his abilities.

Jan 12, 2023
UH HOSPITALS AND CLINICS

Am very pleased with Dr. Ranjan as my doctor.

Jan 12, 2023
UH HOSPITALS AND CLINICS

Outstanding cardiologist

Dec 20, 2022
EXTERNAL SITE

He is a great Dr. I truly appreciate all his help.

Dec 20, 2022
EXTERNAL SITE

I was very impressed with his professionalism, mannerism

Dec 20, 2022
EXTERNAL SITE

Dr Ranjan was thorough and answered all my questions. I felt heard.

Dec 15, 2022
UH HOSPITALS AND CLINICS

Dr Ranjan explained the treatment so even we understood and could make decisions.

Dec 14, 2022
UH HOSPITALS AND CLINICS

too much time waiting for next person. to interview but that's the teaching goes.

Dec 04, 2022
EXTERNAL SITE

Very thorough.

Dec 04, 2022
EXTERNAL SITE

Very thorough.

Nov 15, 2022
University Hospital

Excellent

Sep 03, 2022
UH HOSPITALS AND CLINICS

Enjoyed the experience. Dr. Ranjan is excellent.

Sep 02, 2022
UH HOSPITALS AND CLINICS

Great

Sep 01, 2022
UH HOSPITALS AND CLINICS

The team in this office consists of people who are interested in me as a patient and as a person. They are kind and personable

Aug 07, 2022
UH HOSPITALS AND CLINICS

Excellent care!!

Apr 21, 2022
UH HOSPITALS AND CLINICS

Explained pacemaker/defib operation

Apr 15, 2022
UH HOSPITALS AND CLINICS

Dr.Ranjan is the best.

Apr 02, 2022
UH HOSPITALS AND CLINICS

Great

Mar 19, 2022
UH HOSPITALS AND CLINICS

Excellent

Mar 17, 2022
UH HOSPITALS AND CLINICS

All questions answered, and I especially like the fact that I have the type pacemaker that can go on new rollercoasters

Mar 13, 2022
UH HOSPITALS AND CLINICS

NP did not know why I was at clinic. Have to explain prior history and test done, after this He exited the room. In about 5 minutes the MD came in and abruptly stated at there was nothing to so for me . He did not what to have any discussion of prior test or History.

Feb 11, 2022
UH HOSPITALS AND CLINICS

We still don't know the exact nature of my heart problem so their aren't many options to look at.

Dec 18, 2021
UH HOSPITALS AND CLINICS

Dr. Ranjan seems very smart, but his bedside manner is terrible. He was arrogant, condescending and dismissive. He made me feel like I was wasting his time. He would be better off doing research and not dealing with the public.

Nov 12, 2021
UH HOSPITALS AND CLINICS

Good

Nov 12, 2021
UH HOSPITALS AND CLINICS

Excellent experience throughout the process

Nov 04, 2021
UH HOSPITALS AND CLINICS

Really explained everything well and assuaged my wife's fears.

Oct 19, 2021
UH HOSPITALS AND CLINICS

This was my best visit yet with my physician.

Aug 20, 2021
UH HOSPITALS AND CLINICS

It feels good to be included in my care plans and having everything explained to me! They took time with me. I didn't feel hurried.

Aug 13, 2021
UH HOSPITALS AND CLINICS

Dr Ranjan was fantastic: he provided clear and detailed explanations for all of the questions I had, he outlined my choices as far as treatments and options for care, and he's clearly extremely well versed In his field. I have a tremendous amount of confidence In him and feel grateful to have received the care and attention I did.

Jun 21, 2021
UH HOSPITALS AND CLINICS

these Dr.s are highly qualified at the University, knowledgeable, and easy to talk to. They listen to what you have to say, and answers questions .you are part of the conversation and that is great.

Jun 14, 2021
UH HOSPITALS AND CLINICS

Dr Ranjan is wonderful! I have already recommended him to others,

May 19, 2021
UH HOSPITALS AND CLINICS

I was in the best hands with Dr. Ranjan and his team. Excellent in every area including Scheduling ladies. Very impressed with the level of care and concern for my well being. Love them.

May 18, 2021
UH HOSPITALS AND CLINICS

Always open to suggestion, answered all my questions.

May 01, 2021
UH HOSPITALS AND CLINICS

Very Good

Apr 18, 2021
UH HOSPITALS AND CLINICS

very good

Apr 17, 2021
UH HOSPITALS AND CLINICS

Dr. Ran Jan is great!

Apr 03, 2021
UH HOSPITALS AND CLINICS

Good

Mar 24, 2021
UH HOSPITALS AND CLINICS

I Always feel comfortable and myquestions are always answered.

Mar 16, 2021
UH HOSPITALS AND CLINICS

good

Mar 11, 2021
UH HOSPITALS AND CLINICS

I love my doctor absolutely the best

Mar 04, 2021
UH HOSPITALS AND CLINICS

I felt like my concerns were taken very seriously, and my well-being was a first priority.

Feb 11, 2021
BASIN CLINIC VERNAL

We so appreciate Dr. Ranjan's willingness to see me.

Feb 08, 2021
UH HOSPITALS AND CLINICS

Dr. Ranjan is amazing, very personable caring and thorough .

Jan 14, 2021
BASIN CLINIC VERNAL

It went well, my doctor was understanding with my concerns about being on a certain medication, and he made arrangements with a regular Cardiologist, for a future appointment.

Jan 08, 2021
UH HOSPITALS AND CLINICS

I have appreciated very much not only the level of care I've received from Dr Ranjan and his staff but also for his/ their obvious concern for me as a person, their courtesy and professionalism. They are willing to take whatever time is necessary to answer my questions (often more than once) and help me through this process.

Jan 07, 2021
UH HOSPITALS AND CLINICS

care very good. wait time with no updates was unacceptable.

Dec 17, 2020
BASIN CLINIC VERNAL

all good

Dec 17, 2020
BASIN CLINIC VERNAL

All was good

Dec 01, 2020
UH HOSPITALS AND CLINICS

Very good

Nov 02, 2020
UH HOSPITALS AND CLINICS

good

Oct 25, 2020
UH HOSPITALS AND CLINICS

good

Oct 16, 2020
UH HOSPITALS AND CLINICS

good visit, virtually speaking of course!

Oct 14, 2020
UH HOSPITALS AND CLINICS

Good experience and it was nice not to have to drive up to the hospital.

Oct 09, 2020
UH HOSPITALS AND CLINICS

Dr. Ranjan explained that one of my meds wasn't working like it should, and then proposed to to put me on an infusion medication. It this point after explaining I would have to schedule time off from work, he and his assistant instead of understanding my problem, proceeded to lay a 'guilt trip' on me.

Aug 28, 2020
UH HOSPITALS AND CLINICS

The doctor is knowledgeable and thorough. He listens and advises. I am pleased with him.

Jun 05, 2020
UH HOSPITALS AND CLINICS

easy to talk to and took time with me and explsined reasoning.

May 15, 2020
UH HOSPITALS AND CLINICS

again, it was a virtual appt.

Apr 17, 2020
UH HOSPITALS AND CLINICS

I can't say enough about the cardiology team and from the pre EPS studies to the most excellent care of staff pre proceedure to into the cath lab..the post 24hr hospital stay..this has quite a while ago ..

Mar 13, 2020
UH HOSPITALS AND CLINICS

Very satisfied with Dr Rajan and his team

Mar 13, 2020
UH HOSPITALS AND CLINICS

surprised to learn I had developed afib. didnt feel I had enough info or time to process and discuss diagnosis or explore options.

Feb 17, 2020
UH HOSPITALS AND CLINICS

I felt that I was in very capable hands.

Feb 07, 2020
UH HOSPITALS AND CLINICS

Excellent attention to detail. Elicited feedback from husband as well.


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Ravi Ranjan, M.D., Ph.D., is a Cardiac Electrophysiologist in the Division of Cardiovascular Medicine. His clinical interests include the ablation of complex cardiac arrhythmias such as atrial fibrillation, ventricular tachycardia, and supraventricular tachycardia. He also has a strong interest in cardiac device–based therapies, including cardiac resynchronization therapy, implantable cardioverter-defibrillators (ICDs), and pacemakers.

Dr. Ranjan has been a faculty member at the University of Utah since 2010 and is a tenured Professor of Medicine and is the section chief of Cardiac Electrophysiology. He received his medical degree from Harvard Medical School, completed an internal medicine residency at Massachusetts General Hospital, and pursued both cardiology and cardiac electrophysiology fellowships at Johns Hopkins Hospital.

He has built a large clinical cardiology and electrophysiology practice in Utah and leads a robust, extramurally funded research program (https://cvrti.utah.edu/the-ranjan-laboratory/). His research focuses on tissue- and organ-scale physiology and pathophysiology in conditions such as atrial fibrillation, atypical left atrial flutter, ventricular tachycardia, and cardiac stereotactic radiotherapy. His group integrates cardiac computational modeling, machine learning, preclinical experimental models, cardiac magnetic resonance imaging, biochemical assays, electrophysiological mapping techniques, and human clinical data to study disease progression, develop treatment strategies, and advance understanding of cardiac physiology.

Board Certification and Academic Information

Academic Departments Internal Medicine -Professor
Academic Divisions Cardiovascular Medicine
Board Certification
American Board of Internal Medicine (Sub: Clinical Cardiac Electrophysiology)
American Board of Internal Medicine (Sub: Cardiovascular Disease)

Education history

Doctoral Training Biomedical Engineering - The Johns Hopkins University Ph.D.
Professional Medical Medicine - Harvard Medical School M.D.
Residency Internal Medicine - Massachusetts General Hospital / Harvard Medical School Resident
Fellowship Cardiology - Johns Hopkins Hospital Fellow
Fellowship Cardiac Electrophysiology - Johns Hopkins Hospital Fellow

Selected Publications

Journal Article

  1. Shah AR, Puccio A, Yazaki K, Offei E, Ruiz Castilo MS, Jaroonpipatkul S, Vaziri AY, Khan MS, Ranjan R, Hitchcock R, Dosdall D (2026). Effect of Lead Body and Helix Design Variables on Implantation Success, Insertion Depth, and Muscle Torque in Left Bundle Branch Area: Insights from An Ex-Vivo Porcine Model. Heart rhythm,
  2. Jaroonpipatkul S, Keithler AN, Sathapanasiri T, Tandri H, Jared Bunch T, Ranjan R, Konstantinidis (2026). Outcomes of Focused Double Extrastimuli Mapping and Ablation in Ventricular Tachycardia. Journal of cardiovascular electrophysiology, 37(1), 137-148.
  3. Zenger B, Kolomaya AE, Ranjan R, Bunch TJ, Steinberg B (2025). Geographic and clinical patterns of left atrial appendage occlusion utilization across the United States. Journal of interventional cardiac electrophysiology,
  4. Sundaram S, Nguyen J, Friedman DJ, Ranjan R, Okabe T, Piccini JP, Mbai M, Lo M, Spangler T, Pipenhagen C, Overmann J, Fish JM, Moon (2025). Preclinical evaluation of a novel 8-spline pulsed field ablation system. Heart rhythm,
  5. Jaroonpipatkul S, Sathapanasiri T, Ranjan (2025). Atrial Fibrillation Recurrence Reduction: What Treatments Work Best Postablation? A Network Meta-Analysis. Journal of cardiovascular electrophysiology,
  6. Shah AR, Yazaki K, Seamons B, Offei E, Castilo SR, Li H, Khan MS, Hitchcock R, Ranjan R, Dosdall D (2025). Multiple electrode leads facilitate left bundle branch area pacing: A concept evaluation study. Heart rhythm O2, 6(7), 1005-1010.
  7. Mendes JK, Le JV, Arai AE, Ranjan R, DiBella EVR, Adluru (2025). Improving ungated steady-state cardiac perfusion using transition bands. Magnetic resonance in medicine, 94(1), 199-214.
  8. Paccione EN, Kwan E, Bergquist JA, Shah AS, Orkild BA, Hunt B, Salter ML, Mendes J, DiBella E, Arai AE, Bunch TJ, MacLeod RS, Kunz JN, Hitchcock Y, Kokeny KE, Lloyd S, Ranjan (2025). Radiation induces diffuse extracellular remodeling of healthy myocardium in a dose- and time-dependent manner without a dense ablative effect. Heart rhythm,
  9. Bunch KT, May HT, Knowlton KU, Bair TL, Muhlestein JB, Anderson JL, Ranjan R, Steinberg BA, Bunch T (2025). Atrial Fibrillation as a Predictor of Age-Related Macular Degeneration. Journal of cardiovascular electrophysiology, 36(5), 990-995.
  10. Hunt B, Kwan E, Bergquist J, Brundage J, Orkild B, Dong J, Paccione E, Yazaki K, MacLeod RS, Dosdall DJ, Tasdizen T, Ranjan (2025). Contrastive pretraining improves deep learning classification of endocardial electrograms in a preclinical model. Heart rhythm O2, 6(4), 473-480.
  11. Khan MS, Smego D, Li J, Ishidoya Y, Offei E, Ruiz Castillo MS, Hirahara AM, Balmaceda P, Hunter J, Athavale A, Revelo MP, Palatinus JA, Selzman CH, Ranjan R, Hong T, Dosdall DJ, Shaw R (2025). AAV9-cBIN1 gene therapy rescues chronic heart failure due to ischemic cardiomyopathy in a canine model. Communications medicine, 5(1), 93.
  12. Yazaki K, Kwan E, Ishidoya Y, Stoddard GJ, Dosdall DJ, Navaravong L, Groh CA, Steinberg BA, Bunch TJ, Ranjan (2025). Prospective validation of SURPOINT index for creating atrial scar using Magnetic Resonance Imaging. Europace, 27(10),
  13. Bergquist JA, Orkild B, Kwan E, Gillette K, Yazaki K, Jaroonpipatkul S, Dibella E, Shelton R, Beiging E, Chang L, Plank G, Elhabian S, MacLeod RS, Ranjan (2025). Comparison of LGE MRI Scar Identification Methods for Atrial Computational Modeling. Computing in cardiology, 52,
  14. Busatto A, Bergquist JA, Tasdizen T, Steinberg BA, Ranjan R, MacLeod R (2025). Predicting Ventricular Arrhythmia in Myocardial Ischemia Using Machine Learning. Computing in cardiology, 52,
  15. Hunt B, Kwan E, Paccione E, Orkild B, Yazaki K, Bergquist J, Dong J, MacLeod RS, Dosdall DJ, Ranjan (2024). Are Drivers Recurring or Ephemeral? Observations from Serial Mapping of Persistent Atrial Fibrillation. Europace,
  16. Dong J, Kwan E, Bergquist JA, Steinberg BA, Dosdall DJ, DiBella EVR, MacLeod RS, Bunch TJ, Ranjan (2024). Ablation-induced left atrial mechanical dysfunction recovers in weeks after ablation. Journal of interventional cardiac electrophysiology,
  17. Hirahara AM, Khan MS, Ishidoya Y, Smego D, Roman O, Ranjan R, Krueger L, Hoareau G, Selzman CH, Dosdall D (2024). Canine Model of Ischemia-Induced Ventricular Tachycardia. The Journal of surgical research, 293, 196-203.
  18. Ishidoya Y, Kwan E, Hunt B, Lange M, Sharma T, Dosdall DJ, Macleod RS, Kholmovski EG, Bunch TJ, Ranjan (2024). Effective ablation settings that predict chronic scar after atrial ablation with HELIOSTAR¿ multi-electrode radiofrequency balloon catheter. Journal of interventional cardiac electrophysiology,
  19. Kwan E, Ghafoori E, Good W, Regouski M, Moon B, Fish JM, Hsu E, Polejaeva IA, MacLeod RS, Dosdall DJ, Ranjan (2024). Diffuse functional and structural abnormalities in fibrosis: Potential structural basis for sustaining atrial fibrillation. Heart rhythm,
  20. McGarry TJ, Jared Bunch T, Ranjan R, Stoddard G (2024). Five Criteria Predict Induction and Ablation of Supraventricular Tachycardia. Journal of cardiovascular electrophysiology,
  21. Kwan E, Hunt B, Paccione EN, Orkild BA, Bergquist JA, Ishidoya Y, Yazaki K, Mendes JK, DiBella EVR, MacLeod RS, Dosdall DJ, Ranjan (2024). Functional and Structural Remodeling as Atrial Fibrillation Progresses in a Persistent Atrial Fibrillation Canine Model. JACC. Clinical electrophysiology, 11(4), 720-734.
  22. Dong J, Kwan E, Bergquist JA, Dosdall DJ, DiBella EV, MacLeod RS, Stoddard GJ, Konstantidinis K, Steinberg BA, Bunch TJ, Ranjan (2024). Left atrial functional changes associated with repeated catheter ablations for atrial fibrillation. Journal of cardiovascular electrophysiology,
  23. Bergquist JA, Zenger B, Brundage J, MacLeod RS, Bunch TJ, Shah R, Ye X, Lyons A, Torre M, Ranjan R, Tasdizen T, Steinberg B (2024). Performance of off-the-shelf machine learning architectures and biases in low left ventricular ejection fraction detection. Heart rhythm O2, 5(9), 644-654.
  24. Li J, Balmaceda P, Ha T, Visker JR, Maalouf N, Kwan E, Hoareau GL, Accad M, Ranjan R, Selzman CH, Drakos SG, Shaw RM, Hong (2024). Cardiac bridging integrator 1 gene therapy rescues chronic non-ischemic heart failure in minipigs. NPJ Regenerative medicine, 9(1), 36.
  25. Orkild B, Arefeen Sultan KM, Kholmovski E, Kwan E, Bieging E, Morris A, Stoddard G, MacLeod RS, Elhabian S, Ranjan R, DiBella (2024). Image quality assessment and automation in late gadolinium-enhanced MRI of the left atrium in atrial fibrillation patients. Journal of interventional cardiac electrophysiology,
  26. Jin R, Bergquist JA, Dade D, Zenger B, Ye X, Ranjan R, MacLeod RS, Steinberg BA, Tasdizen (2024). Machine Learning Estimation of Myocardial Ischemia Severity Using Body Surface ECG. Computing in cardiology, 51,
  27. Sultan KMA, Hisham MHH, Orkild B, Morris A, Kholmovski E, Bieging E, Kwan E, Ranjan R, DiBella E, Elhabian (2024). HAMIL-QA: Hierarchical Approach to Multiple Instance Learning for Atrial LGE MRI Quality Assessment. 15001, 275-284.
  28. Kwan E, Hunt B, Paccione E, Orkild BA, Bergquist JA, Yazaki K, Polejaeva I, Hsu E, Dosdall D, MacLeod RS, Ranjan (2024). Structural Differences in Transgenic Animals Associated with Atrial Fibrillation. Computing in cardiology, 51,
  29. Bergquist JA, Dade D, Zenger B, MacLeod RS, Ye X, Ranjan R, Tasdizen T, Steinberg B (2024). Machine Learning Prediction of Blood Potassium at Different Time Cutoffs. Computing in cardiology, 51,
  30. Bergquist JA, Orkild BA, Paccione E, Kwan E, Zenger B, Hunt B, Yazaki K, MacLeod RS, Narayan A, Ranjan (2024). Uncertainty Quantification of Fibrotic Conductivity Effects on Computational Model-Derived Ablation of Atypical Left Atrial Flutter. Computing in cardiology, 51,
  31. Dade D, Bergquist JA, MacLeod RS, Ye X, Ranjan R, Steinberg BA, Tasdizen (2024). A Survey of Augmentation Techniques for Enhancing ECG Representation Through Self-Supervised Contrastive Learning. Computing in cardiology, 51,
  32. Huang Q, Tian Y, Mendes J, Ranjan R, Adluru G, DiBella (2023). Quantitative myocardial perfusion with a hybrid 2D simultaneous multi-slice sequence. Magnetic resonance imaging, 98, 7-16.
  33. Feuerborn ML, Dechand J, Vadlamudi RS, Torre M, Freedman RA, Groh C, Navaravong L, Ranjan R, Varela D, Bunch TJ, Steinberg B (2023). Protocol Development and Initial Experience With Intravenous Sotalol Loading for Atrial Arrhythmias. Critical pathways in cardiology, 22(1), 1-4.
  34. Kamali R, Kwan E, Regouski M, Bunch TJ, Dosdall DJ, Hsu E, Macleod RS, Polejaeva I, Ranjan (2023). Contribution of atrial myofiber architecture to atrial fibrillation. PloS one, 18(1), e0279974.
  35. Kamali R, Gillete K, Tate J, Abhyankar DA, Dosdall DJ, Plank G, Bunch TJ, Macleod RS, Ranjan (2023). Treatment Planning for Atrial Fibrillation Using Patient-Specific Models Showing the Importance of Fibrillatory-Areas. Annals of biomedical engineering, 51(2), 329-342.
  36. Tokavanich N, Prasitlumkum N, Kewcharoen J, Chokesuwattanaskul R, Phannajit J, Cheungpasitporn W, Akoum N, Ranjan R, Bunch TJ, Navaravong (2023). Network meta-analysis and systematic review comparing efficacy and safety between very high power short duration, high power short duration, and conventional radiofrequency ablation of atrial fibrillation. Journal of cardiovascular electrophysiology,
  37. Sessions AJ, May HT, Crandall BG, Day JD, Cutler MJ, Groh CA, Navaravong L, Ranjan R, Steinberg BA, J Bunch (2023). Increasing time between first diagnosis of atrial fibrillation and catheter ablation adversely affects long-term outcomes in patients with and without structural heart disease. Journal of cardiovascular electrophysiology,
  38. Bergquist JA, Zenger B, Brundage J, MacLeod RS, Shah R, Ye X, Lyones A, Ranjan R, Tasdizen T, Bunch TJ, Steinberg B (2023). Comparison of Machine Learning Detection of Low Left Ventricular Ejection Fraction Using Individual ECG Leads. Computing in cardiology, 50,
  39. Bergquist JA, Lange M, Zenger B, Orkild B, Paccione E, Kwan E, Hunt B, Dong J, MacLeod RS, Narayan A, Ranjan (2023). Uncertainty Quantification of the Effect of Variable Conductivity in Ventricular Fibrotic Regions on Ventricular Tachycardia. Computing in cardiology, 50,
  40. Paccione EN, Lange M, Orkild BA, Bergquist JA, Kwan E, Hunt B, Dosdall D, Macleod RS, Ranjan (2023). Effects of Biventricular Pacing Locations on Anti-Tachycardia Pacing Success in a Patient-Specific Model. Computing in cardiology, 2023,
  41. Hunt B, Kwan E, Tasdizen T, Bergquist J, Lange M, Orkild B, MacLeod RS, Dosdall DJ, Ranjan (2023). Transfer Learning for Improved Classification of Drivers in Atrial Fibrillation. Computing in cardiology, 50,
  42. Khan MS, Smego D, Ishidoya Y, Hirahara AM, Offei E, Ruiz Castillo MS, Gharbia O, Li H, Palatinus JA, Krueger L, Hong T, Hoareau GL, Ranjan R, Selzman CH, Shaw RM, Dosdall D (2023). A canine model of chronic ischemic heart failure. American journal of physiology. Heart and circulatory physiology, 324(6), H751-H761.
  43. Hirahara AM, Khan MS, Gharbia OA, Lange M, Ishidoya Y, Smego D, Ranjan R, Stoddard GJ, Selzman CH, Dosdall D (2023). Antitachycardia pacing at the His bundle is safer than conventional right ventricular antitachycardia pacing in a canine myocardial ischemic injury model. Journal of cardiovascular electrophysiology, 34(5), 1249-1256.
  44. Palatinus JA, Valdez S, Taylor L, Whisenant C, Selzman CH, Drakos SG, Ranjan R, Hong T, Saffitz JE, Shaw R (2023). GJA1-20k Rescues Cx43 Localization and Arrhythmias in Arrhythmogenic Cardiomyopathy. Circulation research, 132(6), 744-746.
  45. Orkild BA, Bergquist JA, Paccione EN, Lange M, Kwan E, Hunt B, MacLeod RS, Narayan A, Ranjan (2023). A Grid Search of Fibrosis Thresholds for Uncertainty Quantification in Atrial Flutter Simulations. Computing in cardiology, 50,
  46. Ptaszek LM, Koruth J, Santangeli P, Piccini JP, Ranjan R, Mahapatra S, Pipenhagen C, Fish JM, Moon LB, Ambrosius NM, Boudlali H, Jensen J (2022). Safe and effective delivery of high-power, short-duration radiofrequency ablation lesions with a flexible-tip ablation catheter. Heart rhythm O2, 4(1), 42-50.
  47. Steinberg BA, Woolley S, Li H, Crawford C, Groh CA, Navaravong L, Ranjan R, Zenger B, Zhang Y, Bunch T (2022). Patient-reported outcomes and costs associated with vascular closure and same-day discharge following atrial fibrillation ablation. Journal of cardiovascular electrophysiology, 33(8), 1737-1744.
  48. Ishidoya Y, Kwan E, Dosdall DJ, Macleod RS, Navaravong L, Steinberg BA, Jared Bunch T, Ranjan (2022). Shorter distance between the esophagus and the left atrium is associated with higher rates of esophageal thermal injury after radiofrequency ablation. Journal of cardiovascular electrophysiology, 33(7), 1460-1471.
  49. Ishidoya Y, Kwan E, Dosdall DJ, Macleod RS, Navaravong L, Steinberg BA, Bunch TJ, Ranjan (2022). Short-term natural course of esophageal thermal injury after ablation for atrial fibrillation. Journal of cardiovascular electrophysiology, 33(7), 1450-1459.
  50. Zenger B, Li H, Bunch TJ, Crawford C, Fang JC, Groh CA, Hess R, Navaravong L, Ranjan R, Young J, Zhang Y, Steinberg B (2022). Major drivers of healthcare system costs and cost variability for routine atrial fibrillation ablation. Heart rhythm O2, 4(4), 251-257.
  51. Khan MS, Kyriakopoulos CP, Taleb I, Dranow E, Scott M, Ranjan R, Yin M, Tseliou E, Alharethi R, Caine W, Shaw RM, Selzman CH, Drakos SG, Dosdall D (2022). Baseline QRS duration associates with cardiac recovery in patients with continuous-flow left ventricular assist device implantation. American heart journal plus, 22, 100211.
  52. Lange M, Kwan E, Dosdall DJ, MacLeod RS, Bunch TJ, Ranjan (2022). Case report: Personalized computational model guided ablation for left atrial flutter. Frontiers in cardiovascular medicine, 9, 893752.
  53. Hirahara AM, Lange M, Shah A, Khan MS, Ranjan R, Stoddard G, Dosdall D (2021). His bundle pacing shows similar ventricular electrical activation as sinus: selective and nonselective His pacing indistinguishable. American journal of physiology. Heart and circulatory physiology, 320(1), H13-H22.
  54. Kamali R, Kump J, Ghafoori E, Lange M, Hu N, Bunch TJ, Dosdall DJ, Macleod RS, Ranjan (2021). Area Available for Atrial Fibrillation to Propagate Is an Important Determinant of Recurrence After Ablation. JACC. Clinical electrophysiology, 7(7), 896-908.
  55. Shah AR, Khan MS, Lange M, Hirahara AM, Stoddard G, Ranjan R, Dosdall D (2021). During Early VF in Rabbit Hearts, His Bundle Pacing is Less Effective Than Working Myocardial Pacing in Modulating Left Ventricular Activation Rates. Cardiovascular engineering and technology, 13(3), 452-465.
  56. Kewcharoen J, Prasitlumkum N, Chokesuwattanaskul R, Yi R, Jongnarangsin K, Bunch TJ, Ranjan R, Navaravong (2021). Ablation versus medication as initial therapy for paroxysmal atrial fibrillation: An updated meta-analysis of randomized controlled trials. Journal of arrhythmia, 37(6), 1448-1458.
  57. Wirostko BM, Curtin K, Taylor SC, Paulson C, Pompoco C, Besch BM, Ranjan R, Ritch (2021). Risk of atrial fibrillation is increased in patients with exfoliation syndrome: the Utah project on exfoliation syndrome (UPEXS). Acta ophthalmologica, 100, e1002-e1009.
  58. Turner JL, Steinberg BA, Bunch TJ, Ranjan (2021). Inflammatory cutaneous reaction to a temporary permanent pacemaker. HeartRhythm case reports, 7(8), 571-572.
  59. Khan MS, Yamashita K, Sharma V, Ranjan R, Selzman CH, Dosdall DJ (2020). Perioperative Biomarkers Predicting Postoperative Atrial Fibrillation Risk After Coronary Artery Bypass Grafting: A Narrative Review. J Cardiothorac Vasc Anesth, 34(7), 1933-1941.
  60. Yamashita K, Kwan E, Kamali R, Ghafoori E, Steinberg BA, MacLeod RS, Dosdall DJ, Ranjan (2020). Blanking period after radiofrequency ablation for atrial fibrillation guided by ablation lesion maturation based on serial MR imaging. Journal of cardiovascular electrophysiology, 31(2), 450-456.
  61. Zenger B, Zhang M, Lyons A, Bunch TJ, Fang JC, Freedman RA, Navaravong L, Piccini JP, Ranjan R, Spertus JA, Stehlik J, Turner JL, Greene T, Hess R, Steinberg B (2020). Patient-reported outcomes and subsequent management in atrial fibrillation clinical practice: Results from the Utah mEVAL AF program. Journal of cardiovascular electrophysiology, 31(12), 3187-3195.
  62. Kamali R, Schroeder J, DiBella E, Steinberg B, Han F, Dosdall DJ, Macleod RS, Ranjan (2020). Reproducibility of clinical late gadolinium enhancement magnetic resonance imaging in detecting left atrial scar after atrial fibrillation ablation. Journal of cardiovascular electrophysiology, 31(11), 2824-2832.
  63. Tian Y, Mendes J, Wilson B, Ross A, Ranjan R, DiBella E, Adluru (2020). Whole-heart, ungated, free-breathing, cardiac-phase-resolved myocardial perfusion MRI by using Continuous Radial Interleaved simultaneous Multi-slice acquisitions at sPoiled steady-state (CRIMP). Magnetic resonance in medicine, 84(6), 3071-3087.
  64. Steinberg BA, Turner J, Lyons A, Biber J, Chelu MG, Fang JC, Freedman RA, Han FT, Hardisty B, Marrouche NF, Ranjan R, Shah RU, Spertus JA, Stehlik J, Zenger B, Piccini JP, Hess (2020). Systematic collection of patient-reported outcomes in atrial fibrillation: feasibility and initial results of the Utah mEVAL AF programme. Europace, 22(3), 368-374.
  65. Shah AR, Khan MS, Hirahara AM, Lange M, Ranjan R, Dosdall D (2020). A real-time system for selectively sensing and pacing the His-bundle during sinus rhythm and ventricular fibrillation. Biomedical engineering online, 19(1), 19.
  66. Swenson DJ, Taepke RT, Blauer JJE, Kwan E, Ghafoori E, Plank G, Vigmond E, MacLeod RS, DeGroot P, Ranjan (2020). Direct comparison of a novel antitachycardia pacing algorithm against present methods using virtual patient modeling. Heart rhythm, 17(9), 1602-1608.
  67. Hunt B, Kwan E, McMillan M, Dosdall D, MacLeod R, Ranjan (2020). Deep Learning Based Prediction of Atrial Fibrillation Disease Progression with Endocardial Electrograms in a Canine Model. Computing in cardiology, 47,
  68. Khan MS, Yamashita K, Sharma V, Ranjan R, Dosdall D (2020). RNAs and Gene Expression Predicting Postoperative Atrial Fibrillation in Cardiac Surgery Patients Undergoing Coronary Artery Bypass Grafting. Journal of clinical medicine, 9(4),
  69. Shah AR, Khan MS, Hirahara AM, Lange M, Ranjan R, Dosdall D (2020). In Vitro/Ex Vivo Investigation of Modified Utah Electrode Array to Selectively Sense and Pace the Sub-Surface Cardiac His Bundle. ACS biomaterials science & engineering, 6(6), 3335-3348.
  70. Yamashita K, Kamali R, Kwan E, MacLeod RS, Dosdall DJ, Ranjan (2020). Effective Ablation Settings That Predict Chronic Scar After Left Atrial Ablation. JACC. Clinical electrophysiology, 6(2), 143-152.
  71. Yamashita K, Kholmovski E, Ghafoori E, Kamali R, Kwan E, Lichter J, MacLeod R, Dosdall DJ, Ranjan (2019). Characterization of edema after cryo and radiofrequency ablations based on serial magnetic resonance imaging. Journal of cardiovascular electrophysiology, 30(2), 255-262.
  72. Getman MK, Wissner E, Ranjan R, Lalonde J (2019). Relationship between time-to-isolation and freeze duration: Computational modeling of dosing for Arctic Front Advance and Arctic Front Advance Pro cryoballoons. Journal of cardiovascular electrophysiology, 30(11), 2274-2282.
  73. Yamashita K, Silvernagel J, Kwan E, Kamali R, Ghafoori E, MacLeod R, Dosdall DJ, Ranjan (2019). Changes in atrial electrophysiological and structural substrate and their relationship to histology in a long-term chronic canine atrial fibrillation model. Pacing and clinical electrophysiology, 42(7), 930-936.
  74. Lichter J, Kholmovski EG, Coulombe N, Ghafoori E, Kamali R, MacLeod R, Ranjan (2019). Real-time magnetic resonance imaging-guided cryoablation of the pulmonary veins with acute freeze-zone and chronic lesion assessment. Europace, 21(1), 154-162.
  75. Yamashita K, Ghafoori E, Silvernagel J, Ashton J, J Dosdall D, MacLeod R, Ranjan (2019). The Effective Contact Force to Minimize Edema Relative to Chronic Lesion Formation During Radiofrequency Ablation in Ventricular Wall. International heart journal, 60(6), 1407-1414.
  76. Angel N, Kholmovski EG, Ghafoori E, Dosdall DJ, MacLeod RS, Ranjan (2019). Regions of High Dominant Frequency in Chronic Atrial Fibrillation Anchored to Areas of Atrial Fibrosis. Computing in cardiology, 46,
  77. Thomas S, Silvernagel J, Angel N, Kholmovski E, Ghafoori E, Hu N, Ashton J, Dosdall DJ, MacLeod R, Ranjan (2018). Higher contact force during radiofrequency ablation leads to a much larger increase in edema as compared to chronic lesion size. Journal of cardiovascular electrophysiology, 29(8), 1143-1149.
  78. Kholmovski EG, Silvernagel J, Angel N, Vijayakumar S, Thomas S, Dosdall D, MacLeod R, Marrouche NF, Ranjan (2018). Acute noncontrast T1-weighted magnetic resonance imaging predicts chronic radiofrequency ablation lesions. Journal of cardiovascular electrophysiology, 29(11), 1556-1562.
  79. Ghafoori E, Angel N, Dosdall DJ, MacLeod RS, Ranjan (2018). Atrial fibrillation observed on surface ECG can be atrial flutter or atrial tachycardia. Journal of electrocardiology, 51(6S), S67-S71.
  80. Yamashita K, Quang C, Schroeder JD, DiBella E, Han F, MacLeod R, Dosdall DJ, Ranjan (2018). Distance between the left atrium and the vertebral body is predictive of esophageal movement in serial MR imaging. Journal of interventional cardiac electrophysiology, 52(2), 149-156.
  81. Huang S, Wu L, Huang J, Panitchob N, Hu N, Ranjan R, Dosdall D (2017). Restitution characteristics of His bundle and working myocardium in isolated rabbit hearts. PloS one, 12(10), e0186880.
  82. Ghafoori E, Kholmovski EG, Thomas S, Silvernagel J, Angel N, Hu N, Dosdall DJ, MacLeod R, Ranjan (2017). Characterization of Gadolinium Contrast Enhancement of Radiofrequency Ablation Lesions in Predicting Edema and Chronic Lesion Size.LID - e005599 [pii]LID - 10.1161/CIRCEP.117.005599 [doi]. Circulation. Arrhythmia and electrophysiology, 10(11),
  83. Panitchob N, Li L, Huang J, Ranjan R, Ideker RE, Dosdall D (2017). Endocardial Activation Drives Activation Patterns During Long-Duration Ventricular Fibrillation and Defibrillation. Circulation. Arrhythmia and electrophysiology, 10(12),
  84. Kholmovski EG, Coulombe N, Silvernagel J, Angel N, Parker D, Macleod R, Marrouche N, Ranjan (2016). Real-Time MRI-Guided Cardiac Cryo-Ablation: A Feasibility Study. Journal of cardiovascular electrophysiology, 27(5), 602-8.
  85. Polejaeva IA, Ranjan R, Davies CJ, Regouski M, Hall J, Olsen AL, Meng Q, Rutigliano HM, Dosdall DJ, Angel NA, Sachse FB, Seidel T, Thomas AJ, Stott R, Panter KE, Lee PM, Van Wettere AJ, Stevens JR, Wang Z, MacLeod RS, Marrouche NF, White K (2016). Increased Susceptibility to Atrial Fibrillation Secondary to Atrial Fibrosis in Transgenic Goats Expressing Transforming Growth Factor-ß1. Journal of cardiovascular electrophysiology, 27(10), 1220-1229.
  86. Angel N, Li LI, Macleod RS, Marrouche N, Ranjan R, Dosdall D (2015). Diverse Fibrosis Architecture and Premature Stimulation Facilitate Initiation of Reentrant Activity Following Chronic Atrial Fibrillation. Journal of cardiovascular electrophysiology, 26(12), 1352-60.
  87. Parmar BR, Jarrett TR, Kholmovski EG, Hu N, Parker D, MacLeod RS, Marrouche NF, Ranjan (2015). Poor scar formation after ablation is associated with atrial fibrillation recurrence. Journal of interventional cardiac electrophysiology, 44(3), 247-56.
  88. Fitts M, Breton E, Kholmovski EG, Dosdall DJ, Vijayakumar S, Hong KP, Ranjan R, Marrouche NF, Axel L, Kim (2013). Arrhythmia insensitive rapid cardiac T1 mapping pulse sequence. Magnetic resonance in medicine, 70(5), 1274-82.
  89. Higuchi K, Akkaya M, Koopmann M, Blauer JJ, Burgon NS, Damal K, Ranjan R, Kholmovski E, Macleod RS, Marrouche N (2013). The effect of fat pad modification during ablation of atrial fibrillation: late gadolinium enhancement MRI analysis. Pacing and clinical electrophysiology, 36(4), 467-76.
  90. Akoum N, McGann C, Vergara G, Badger T, Ranjan R, Mahnkopf C, Kholmovski E, Macleod R, Marrouche (2012). Atrial fibrosis quantified using late gadolinium enhancement MRI is associated with sinus node dysfunction requiring pacemaker implant. Journal of cardiovascular electrophysiology, 23(1), 44-50.
  91. Ranjan (2012). Magnetic resonance imaging in clinical cardiac electrophysiology. Critical reviews in biomedical engineering, 40(5), 409-26.
  92. Ranjan R, Kholmovski EG, Blauer J, Vijayakumar S, Volland NA, Salama ME, Parker DL, MacLeod R, Marrouche N (2012). Identification and acute targeting of gaps in atrial ablation lesion sets using a real-time magnetic resonance imaging system. Circulation. Arrhythmia and electrophysiology, 5(6), 1130-5.
  93. Ranjan R, Kato R, Zviman MM, Dickfeld TM, Roguin A, Berger RD, Tomaselli GF, Halperin H (2011). Gaps in the ablation line as a potential cause of recovery from electrical isolation and their visualization using MRI. Circulation. Arrhythmia and electrophysiology, 4(3), 279-86.
  94. Ranjan R, Henrikson C (2010). ICD implantation after crossing a totally occluded subclavian vein via collaterals from the superior vena cava. Pacing and clinical electrophysiology, 33(2), e14-6.
  95. Yannopoulos D, Zviman M, Castro V, Kolandaivelu A, Ranjan R, Wilson RF, Halperin H (2009). Intra-cardiopulmonary resuscitation hypothermia with and without volume loading in an ischemic model of cardiac arrest. Circulation, 120(14), 1426-35.
  96. Ranjan R, Tomaselli GF, Marban (1999). A novel mechanism of anode-break stimulation predicted by bidomain modeling. Circulation research, 84(2), 153-6.
  97. Ranjan R, Chiamvimonvat N, Thakor NV, Tomaselli GF, Marban E (1998). Mechanism of anode break stimulation in the heart. Biophys J, 74(4), 1850-63.
  98. Thakor NV, Ranjan R, Rajasekhar S, Mower MM (1997). Effect of varying pacing waveform shapes on propagation and hemodynamics in the rabbit heart. Am J Cardiol, 79(6A), 36-43.
  99. Perez-Garcia MT, Chiamvimonvat N, Ranjan R, Balser JR, Tomaselli GF, Marban E (1997). Mechanisms of sodium/calcium selectivity in sodium channels probed by cysteine mutagenesis and sulfhydryl modification. Biophys J, 72(3), 989-96.
  100. Benitah JP, Ranjan R, Yamagishi T, Janecki M, Tomaselli GF, Marban E (1997). Molecular motions within the pore of voltage-dependent sodium channels. Biophys J, 73(2), 603-13.
  101. Baykal A, Ranjan R, Thakor N (1997). Estimation of the ventricular fibrillation duration by autoregressive modeling. IEEE transactions on bio-medical engineering, 44(5), 349-56.
  102. Chiamvimonvat N, Perez-Garcia MT, Ranjan R, Marban E, Tomaselli GF (1996). Depth asymmetries of the pore-lining segments of the Na+ channel revealed by cysteine mutagenesis. Neuron, 16(5), 1037-47.
  103. Casaleggio A, Corana A, Ranjan R, Thakor N (1996). Dimensional analysis of the electrical activity in fibrillating isolated hearts. International journal of bifurcation and chaos in applied sciences and engineering, 6, 1547-1561.
  104. Ranjan R, Thakor NV (1995). Electrical stimulation of cardiac myocytes. Ann Biomed Eng, 23(6), 812-21.
  105. Baykal A, Ranjan R, Thakor N (1994). Model-based analysis of the ECG during early stages of ventricular fibrillation. Journal of electrocardiology, 27 Suppl, 84-90.

Review

  1. Burnham TS, Ranjan R, Konstantinidis K, Steinberg BA, Bunch T (2025). Fat, fib, and forgetfulness: The interplay between adiposity, atrial fibrillation, and dementia. Progress in cardiovascular diseases, 91, 10-17.
  2. Niemiera B, Ranjan R, Piccini JP, Nguyen J, Mittal L, Pipenhagen C, Overmann J, Spangler T, Sundaram (2025). Microbubble and thermal profile of an eight-spline pulsed field ablation system in a pre-clinical model. Journal of interventional cardiac electrophysiology,
  3. Crawford M, Steinberg BA, Ranjan R, Konstantinidis K, Navaravong L, Bunch T (2024). Mortality benefit with AF ablation: Impact of normal sinus rhythm seen in CABANA and EAST AFnet. Journal of cardiovascular electrophysiology, 35(3), 538-546.
  4. Kogelschatz B, Zenger B, Steinberg BA, Ranjan R, Jared Bunch (2023). Atrial fibrillation and the risk of early-onset dementia and cognitive decline: An updated review. Trends in cardiovascular medicine,
  5. Zenger B, Rizzi S, Steinberg BA, Ranjan R, Bunch T (2023). This is Your Brain, and This is Your Brain on Atrial Fibrillation: The Roles of Cardiac Malperfusion Events and Vascular Dysfunction in Cognitive Impairment. Arrhythmia & electrophysiology review, 12, e01.

Book Chapter

  1. Ravi Ranjan and Joseph E. Marin (2010). Basics of Biventricular Pacing Systems: Principles and Timing Cycles.

Editorial

  1. Lehmann HI, Stoddard GJ, Ranjan (2024). Pulse Field Ablation of Atrial Fibrillation and Hemolysis-Red Blood Cells Also Demand Our Attention. Journal of cardiovascular electrophysiology, 35(12), 2411-2413.
  2. Ishidoya Y, Ranjan (2022). Using MRI to predict ventricular tachycardia recurrence and provide guidance for ablation?. Heart rhythm, 19(10), 1611-1612.
  3. Ishidoya Y, Ranjan (2021). Novel energy source for ablating the pulmonary veins; Is pulsed field ablation the new ablation modality?. Journal of cardiovascular electrophysiology, 32(4), 970-972.
  4. Bunch TJ, Ranjan (2020). Overestimation and Underweighting of Rare Events: The Challenge of Preventing Atrial-Esophageal Fistula After Ablation. JACC. Clinical electrophysiology, 6(3), 269-271.
  5. Ranjan (2020). Is it Time to Screen All Patients for Sleep Apnea Before Atrial Fibrillation Ablation?. JACC. Clinical electrophysiology, 6(12), 1507-1508.
  6. Ranjan (2015). Is Good Contact Enough for Atrial Fibrillation Ablation?. JACC. Clinical electrophysiology, 1(5), 432-433.
  7. Yannopoulos D, Kolandaivelu A, Ranjan (2008). Flow or no flow: that is the question!. Critical care medicine, 36(5), 1677-8.

Letter

  1. Shah AS, Engels M, Freedman RA, Lehmann HI, Konstantinidis K, Ranjan R, Bunch T (2025). Real-World Safety Profile of the Extravascular (EV) Implantable Defibrillator System: Insights From the MAUDE Database. Circulation. Arrhythmia and electrophysiology, 18(7), e013831.
  2. Dong J, Ranjan (2025). Redo Ablation for Atrial Fibrillation Slows Mechanical Function Decrement From Atrial Fibrillation Progression. Journal of cardiovascular electrophysiology, 36(6), 1446-1447.
  3. Dong J, Ranjan (2024). Redo Ablation Slows the Decline in Atrial Strain From Natural Progression of Atrial Fibrillation. Journal of cardiovascular electrophysiology,
  4. Sessions AJ, May HT, Crandall BG, Day JD, Cutler MJ, Groh CA, Navaravong L, Ranjan R, Steinberg BA, Jared Bunch (2023). Response to "Delay in AF ablation costs lives". Journal of cardiovascular electrophysiology, 34(4), 1094-1095.

Other

  1. Burnham TS, May HT, Bair TL, Anderson JA, Crandall BG, Cutler MJ, Day JD, Freedman RA, Knowlton KU, Muhlestein JB, Navaravong L, Ranjan RA, Steinberg BA, Bunch T (2022). Long-term outcomes in patients treated with flecainide for atrial fibrillation with stable coronary artery disease. American heart journal, 243, 127-139.
  2. Khan MS, Lange M, Ranjan R, Sharma V, Glotzbach JP, Selzman C, Dosdall D (2021). Premature atrial stimulation accentuates conduction abnormalities in cardiac surgery patients that develop postoperative atrial fibrillation. Journal of electrocardiology, 69, 36-43.
  3. Lange M, Hirahara AM, Ranjan R, Stoddard GJ, Dosdall D (2021). Atrial slow conduction develops and dynamically expands during premature stimulation in an animal model of persistent atrial fibrillation. PloS one, 16(10), e0258285.