Ravi Ranjan
Rating: 4.8 of 5
( out of 188 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
801-585-7676
Get Directions

Blanding Family Practice

802 South 200 West
Blanding , UT 84511
435-678-0700
Get Directions
Show 1 more location(s)

University of Utah Hospital

50 N Medical Dr
Salt Lake City , UT 84132
801-585-7676
Get Directions

  • Ravi Ranjan, M.D., Ph.D., is chief of cardiac electrophysiology. His clinical interests include ablation of complex cardiac arrhythmias like atrial fibrillation, ventricular tachycardias and supra-ventricular tachycardias. He also has keen interest in cardiac device based therapy like cardiac resynchronization therapy, ICDs and pacemakers. He has been a faculty member at the University of Utah since 2010 and is a tenured Professor of Medicine. He received his medical degree from Harvard Medical School, completed an internal medicine residency at Massachusetts General Hospital, Harvard Medical School, a cardiology fellowship at Johns Hopkins Hospital and a cardiac electrophysiology fellowship at Johns Hopkins Hospital. Dr. Ranjan has built a large clinical cardiology and electrophysiology practice in Utah.

    Specialties

    Patient Rating

    Rating: 4.8 out of 5
    4.8 /5
    ( out of 188 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.

    Patient Comments

    Patient comments are gathered from our patient experience survey and displayed in their entirety. For the convenience of our visitors, some patient comments have been translated from their original language into English while preserving their original meaning as accurately as possible. Patients are de-identified for confidentiality and patient privacy.

    September 01, 2025
    UNIVERSITY HOSPITAL
    Rating: 5 out of 5

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

    August 31, 2025
    UNIVERSITY HOSPITAL
    Rating: 5 out of 5

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

    August 05, 2025
    UNIVERSITY HOSPITAL
    Rating: 5 out of 5

    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.

    July 18, 2025
    UNIVERSITY HOSPITAL
    Rating: 5 out of 5

    Dr.Raman is very caring.

    June 15, 2025
    UNIVERSITY HOSPITAL
    Rating: 5 out of 5

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

    June 14, 2025
    UNIVERSITY HOSPITAL
    Rating: 5 out of 5

    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
    Rating: 5 out of 5

    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
    Rating: 5 out of 5

    Dr Ranjan and his team are first rate!

    April 23, 2025
    EXTERNAL SITE
    Rating: 5 out of 5

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

    See More Patient Comments

  • Ravi Ranjan, M.D., Ph.D., is chief of cardiac electrophysiology. His clinical interests include ablation of complex cardiac arrhythmias like atrial fibrillation, ventricular tachycardias and supra-ventricular tachycardias. He also has keen interest in cardiac device based therapy like cardiac resynchronization therapy, ICDs and pacemakers. He has been a faculty member at the University of Utah since 2010 and is a tenured Professor of Medicine. He received his medical degree from Harvard Medical School, completed an internal medicine residency at Massachusetts General Hospital, Harvard Medical School, a cardiology fellowship at Johns Hopkins Hospital and a cardiac electrophysiology fellowship at Johns Hopkins Hospital. Dr. Ranjan has built a large clinical cardiology and electrophysiology practice in Utah.

    Board Certification and Academic Information

    Academic Departments Internal Medicine -Professor
    Academic Divisions Cardiovascular Medicine

    Education history

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

    Selected Publications

    Journal Article

    1. Zenger B, Kolomaya AE, Ranjan R, Bunch TJ, Steinberg BA (2025). Geographic and clinical patterns of left atrial appendage occlusion utilization across the United States. J Interv Card Electrophysiol. (Read full publication)
    2. 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 B (2025). Preclinical evaluation of a novel 8-spline pulsed field ablation system. Heart Rhythm. (Read full publication)
    3. Jaroonpipatkul S, Sathapanasiri T, Ranjan R (2025). Atrial Fibrillation Recurrence Reduction: What Treatments Work Best Postablation? A Network Meta-Analysis. J Cardiovasc Electrophysiol. (Read full publication)
    4. Mendes JK, Le JV, Arai AE, Ranjan R, DiBella EVR, Adluru G (2025). Improving ungated steady-state cardiac perfusion using transition bands. Magn Reson Med, 94(1), 199-214. (Read full publication)
    5. 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 R (2025). Radiation induces diffuse extracellular remodeling of healthy myocardium in a dose- and time-dependent manner without a dense ablative effect. Heart Rhythm. (Read full publication)
    6. Shah AR, Yazaki K, Seamons B, Offei E, Castilo SR, Li H, Khan MS, Hitchcock R, Ranjan R, Dosdall DJ (2025). Multiple electrode leads facilitate left bundle branch area pacing: A concept evaluation study. Heart Rhythm O2, 6(7), 1005-1010. (Read full publication)
    7. Bunch KT, May HT, Knowlton KU, Bair TL, Muhlestein JB, Anderson JL, Ranjan R, Steinberg BA, Bunch TJ (2025). Atrial Fibrillation as a Predictor of Age-Related Macular Degeneration. J Cardiovasc Electrophysiol, 36(5), 990-995. (Read full publication)
    8. 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 RM (2025). AAV9-cBIN1 gene therapy rescues chronic heart failure due to ischemic cardiomyopathy in a canine model. Commun Med (Lond), 5(1), 93. (Read full publication)
    9. Hunt B, Kwan E, Bergquist J, Brundage J, Orkild B, Dong J, Paccione E, Yazaki K, MacLeod RS, Dosdall DJ, Tasdizen T, Ranjan R (2025). Contrastive pretraining improves deep learning classification of endocardial electrograms in a preclinical model. Heart Rhythm O2, 6(4), 473-480. (Read full publication)
    10. Orkild B, Arefeen Sultan KM, Kholmovski E, Kwan E, Bieging E, Morris A, Stoddard G, MacLeod RS, Elhabian S, Ranjan R, DiBella E (2024). Image quality assessment and automation in late gadolinium-enhanced MRI of the left atrium in atrial fibrillation patients. J Interv Card Electrophysiol. (Read full publication)
    11. 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 T (2024). Cardiac bridging integrator 1 gene therapy rescues chronic non-ischemic heart failure in minipigs. NPJ Regen Med, 9(1), 36. (Read full publication)
    12. Ishidoya Y, Kwan E, Hunt B, Lange M, Sharma T, Dosdall DJ, Macleod RS, Kholmovski EG, Bunch TJ, Ranjan R (2024). Effective ablation settings that predict chronic scar after atrial ablation with HELIOSTAR™ multi-electrode radiofrequency balloon catheter. J Interv Card Electrophysiol. (Read full publication)
    13. McGarry TJ, Jared Bunch T, Ranjan R, Stoddard GJ (2024). Five Criteria Predict Induction and Ablation of Supraventricular Tachycardia. J Cardiovasc Electrophysiol. (Read full publication)
    14. Kwan E, Ghafoori E, Good W, Regouski M, Moon B, Fish JM, Hsu E, Polejaeva IA, MacLeod RS, Dosdall DJ, Ranjan R (2024). Diffuse functional and structural abnormalities in fibrosis: Potential structural basis for sustaining atrial fibrillation. Heart Rhythm. (Read full publication)
    15. Kwan E, Hunt B, Paccione EN, Orkild BA, Bergquist JA, Ishidoya Y, Yazaki K, Mendes JK, DiBella EVR, MacLeod RS, Dosdall DJ, Ranjan R (2024). Functional and Structural Remodeling as Atrial Fibrillation Progresses in a Persistent Atrial Fibrillation Canine Model. JACC Clin Electrophysiol, 11(4), 720-734. (Read full publication)
    16. Dong J, Kwan E, Bergquist JA, Dosdall DJ, DiBella EV, MacLeod RS, Stoddard GJ, Konstantidinis K, Steinberg BA, Bunch TJ, Ranjan R (2024). Left atrial functional changes associated with repeated catheter ablations for atrial fibrillation. J Cardiovasc Electrophysiol. (Read full publication)
    17. Hunt B, Kwan E, Paccione E, Orkild B, Yazaki K, Bergquist J, Dong J, MacLeod RS, Dosdall DJ, Ranjan R (2024). Are Drivers Recurring or Ephemeral? Observations from Serial Mapping of Persistent Atrial Fibrillation. Europace. (Read full publication)
    18. Bergquist JA, Zenger B, Brundage J, MacLeod RS, Bunch TJ, Shah R, Ye X, Lyons A, Torre M, Ranjan R, Tasdizen T, Steinberg BA (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. (Read full publication)
    19. Dong J, Kwan E, Bergquist JA, Steinberg BA, Dosdall DJ, DiBella EVR, MacLeod RS, Bunch TJ, Ranjan R (2024). Ablation-induced left atrial mechanical dysfunction recovers in weeks after ablation. J Interv Card Electrophysiol. (Read full publication)
    20. Hirahara AM, Khan MS, Ishidoya Y, Smego D, Roman O, Ranjan R, Krueger L, Hoareau G, Selzman CH, Dosdall DJ (2023). Canine Model of Ischemia-Induced Ventricular Tachycardia. J Surg Res, 293, 196-203. (Read full publication)
    21. Hunt B, Kwan E, Tasdizen T, Bergquist J, Lange M, Orkild B, MacLeod RS, Dosdall DJ, Ranjan R (2023). Transfer Learning for Improved Classification of Drivers in Atrial Fibrillation. Comput Cardiol (2010), 50. (Read full publication)
    22. Paccione EN, Lange M, Orkild BA, Bergquist JA, Kwan E, Hunt B, Dosdall D, Macleod RS, Ranjan R (2023). Effects of Biventricular Pacing Locations on Anti-Tachycardia Pacing Success in a Patient-Specific Model. Comput Cardiol (2010), 2023. (Read full publication)
    23. Bergquist JA, Lange M, Zenger B, Orkild B, Paccione E, Kwan E, Hunt B, Dong J, MacLeod RS, Narayan A, Ranjan R (2023). Uncertainty Quantification of the Effect of Variable Conductivity in Ventricular Fibrotic Regions on Ventricular Tachycardia. Comput Cardiol (2010), 50. (Read full publication)
    24. Bergquist JA, Zenger B, Brundage J, MacLeod RS, Shah R, Ye X, Lyones A, Ranjan R, Tasdizen T, Bunch TJ, Steinberg BA (2023). Comparison of Machine Learning Detection of Low Left Ventricular Ejection Fraction Using Individual ECG Leads. Comput Cardiol (2010), 50. (Read full publication)
    25. 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 DJ (2023). A canine model of chronic ischemic heart failure. Am J Physiol Heart Circ Physiol, 324(6), H751-H761. (Read full publication)
    26. Huang Q, Tian Y, Mendes J, Ranjan R, Adluru G, DiBella E (2022). Quantitative myocardial perfusion with a hybrid 2D simultaneous multi-slice sequence. Magn Reson Imaging, 98, 7-16. (Read full publication)
    27. Hirahara AM, Khan MS, Gharbia OA, Lange M, Ishidoya Y, Smego D, Ranjan R, Stoddard GJ, Selzman CH, Dosdall DJ (2023). Antitachycardia pacing at the His bundle is safer than conventional right ventricular antitachycardia pacing in a canine myocardial ischemic injury model. J Cardiovasc Electrophysiol, 34(5), 1249-1256. (Read full publication)
    28. Palatinus JA, Valdez S, Taylor L, Whisenant C, Selzman CH, Drakos SG, Ranjan R, Hong T, Saffitz JE, Shaw RM (2023). GJA1-20k Rescues Cx43 Localization and Arrhythmias in Arrhythmogenic Cardiomyopathy. Circ Res, 132(6), 744-746. (Read full publication)
    29. Feuerborn ML, Dechand J, Vadlamudi RS, Torre M, Freedman RA, Groh C, Navaravong L, Ranjan R, Varela D, Bunch TJ, Steinberg BA (2022). Protocol Development and Initial Experience With Intravenous Sotalol Loading for Atrial Arrhythmias. Crit Pathw Cardiol, 22(1), 1-4. (Read full publication)
    30. Kamali R, Gillete K, Tate J, Abhyankar DA, Dosdall DJ, Plank G, Bunch TJ, Macleod RS, Ranjan R (2022). Treatment Planning for Atrial Fibrillation Using Patient-Specific Models Showing the Importance of Fibrillatory-Areas. Ann Biomed Eng, 51(2), 329-342. (Read full publication)
    31. Kamali R, Kwan E, Regouski M, Bunch TJ, Dosdall DJ, Hsu E, Macleod RS, Polejaeva I, Ranjan R (2023). Contribution of atrial myofiber architecture to atrial fibrillation. PLoS One, 18(1), e0279974. (Read full publication)
    32. Tokavanich N, Prasitlumkum N, Kewcharoen J, Chokesuwattanaskul R, Phannajit J, Cheungpasitporn W, Akoum N, Ranjan R, Bunch TJ, Navaravong L (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. J Cardiovasc Electrophysiol. (Read full publication)
    33. Sessions AJ, May HT, Crandall BG, Day JD, Cutler MJ, Groh CA, Navaravong L, Ranjan R, Steinberg BA, J Bunch T (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. J Cardiovasc Electrophysiol. (Read full publication)
    34. Zenger B, Li H, Bunch TJ, Crawford C, Fang JC, Groh CA, Hess R, Navaravong L, Ranjan R, Young J, Zhang Y, Steinberg BA (2022). Major drivers of healthcare system costs and cost variability for routine atrial fibrillation ablation. Heart Rhythm O2, 4(4), 251-257. (Read full publication)
    35. Ptaszek LM, Koruth J, Santangeli P, Piccini JP, Ranjan R, Mahapatra S, Pipenhagen C, Fish JM, Moon LB, Ambrosius NM, Boudlali H, Jensen JA (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. (Read full publication)
    36. 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 DJ (2022). Baseline QRS duration associates with cardiac recovery in patients with continuous-flow left ventricular assist device implantation. Am Heart J Plus, 22, 100211. (Read full publication)
    37. Lange M, Kwan E, Dosdall DJ, MacLeod RS, Bunch TJ, Ranjan R (2022). Case report: Personalized computational model guided ablation for left atrial flutter. Front Cardiovasc Med, 9, 893752. (Read full publication)
    38. Steinberg BA, Woolley S, Li H, Crawford C, Groh CA, Navaravong L, Ranjan R, Zenger B, Zhang Y, Bunch TJ (2022). Patient-reported outcomes and costs associated with vascular closure and same-day discharge following atrial fibrillation ablation. J Cardiovasc Electrophysiol, 33(8), 1737-1744. (Read full publication)
    39. Ishidoya Y, Kwan E, Dosdall DJ, Macleod RS, Navaravong L, Steinberg BA, Bunch TJ, Ranjan R (2022). Short-term natural course of esophageal thermal injury after ablation for atrial fibrillation. J Cardiovasc Electrophysiol, 33(7), 1450-1459. (Read full publication)
    40. Ishidoya Y, Kwan E, Dosdall DJ, Macleod RS, Navaravong L, Steinberg BA, Jared Bunch T, Ranjan R (2022). Shorter distance between the esophagus and the left atrium is associated with higher rates of esophageal thermal injury after radiofrequency ablation. J Cardiovasc Electrophysiol, 33(7), 1460-1471. (Read full publication)
    41. Shah AR, Khan MS, Lange M, Hirahara AM, Stoddard G, Ranjan R, Dosdall DJ (2021). During Early VF in Rabbit Hearts, His Bundle Pacing is Less Effective Than Working Myocardial Pacing in Modulating Left Ventricular Activation Rates. Cardiovasc Eng Technol, 13(3), 452-465. (Read full publication)
    42. Kewcharoen J, Prasitlumkum N, Chokesuwattanaskul R, Yi R, Jongnarangsin K, Bunch TJ, Ranjan R, Navaravong L (2021). Ablation versus medication as initial therapy for paroxysmal atrial fibrillation: An updated meta-analysis of randomized controlled trials. J Arrhythm, 37(6), 1448-1458. (Read full publication)
    43. Wirostko BM, Curtin K, Taylor SC, Paulson C, Pompoco C, Besch BM, Ranjan R, Ritch R (2021). Risk of atrial fibrillation is increased in patients with exfoliation syndrome: the Utah project on exfoliation syndrome (UPEXS). Acta Ophthalmol, 100, e1002-e1009. (Read full publication)
    44. Kamali R, Kump J, Ghafoori E, Lange M, Hu N, Bunch TJ, Dosdall DJ, Macleod RS, Ranjan R (2021). Area Available for Atrial Fibrillation to Propagate Is an Important Determinant of Recurrence After Ablation. JACC Clin Electrophysiol, 7(7), 896-908. (Read full publication)
    45. Turner JL, Steinberg BA, Bunch TJ, Ranjan R (2021). Inflammatory cutaneous reaction to a temporary permanent pacemaker. HeartRhythm Case Rep, 7(8), 571-572. (Read full publication)
    46. Hirahara AM, Lange M, Shah A, Khan MS, Ranjan R, Stoddard G, Dosdall DJ (2020). His bundle pacing shows similar ventricular electrical activation as sinus: selective and nonselective His pacing indistinguishable. Am J Physiol Heart Circ Physiol, 320(1), H13-H22. (Read full publication)
    47. Tian Y, Mendes J, Wilson B, Ross A, Ranjan R, DiBella E, Adluru G (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). Magn Reson Med, 84(6), 3071-3087. (Read full publication)
    48. 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 BA (2020). Patient-reported outcomes and subsequent management in atrial fibrillation clinical practice: Results from the Utah mEVAL AF program. J Cardiovasc Electrophysiol, 31(12), 3187-3195. (Read full publication)
    49. Kamali R, Schroeder J, DiBella E, Steinberg B, Han F, Dosdall DJ, Macleod RS, Ranjan R (2020). Reproducibility of clinical late gadolinium enhancement magnetic resonance imaging in detecting left atrial scar after atrial fibrillation ablation. J Cardiovasc Electrophysiol, 31(11), 2824-2832. (Read full publication)
    50. Swenson DJ, Taepke RT, Blauer JJE, Kwan E, Ghafoori E, Plank G, Vigmond E, MacLeod RS, DeGroot P, Ranjan R (2020). Direct comparison of a novel antitachycardia pacing algorithm against present methods using virtual patient modeling. Heart Rhythm, 17(9), 1602-1608. (Read full publication)
    51. Hunt B, Kwan E, McMillan M, Dosdall D, MacLeod R, Ranjan R (2021). Deep Learning Based Prediction of Atrial Fibrillation Disease Progression with Endocardial Electrograms in a Canine Model. Comput Cardiol (2010), 47. (Read full publication)
    52. Khan MS, Yamashita K, Sharma V, Ranjan R, Selzman CH, Dosdall DJ (2019). Perioperative Biomarkers Predicting Postoperative Atrial Fibrillation Risk After Coronary Artery Bypass Grafting: A Narrative Review. J Cardiothorac Vasc Anesth, 34(7), 1933-1941. (Read full publication)
    53. Shah AR, Khan MS, Hirahara AM, Lange M, Ranjan R, Dosdall DJ (2020). In Vitro/Ex Vivo Investigation of Modified Utah Electrode Array to Selectively Sense and Pace the Sub-Surface Cardiac His Bundle. ACS Biomater Sci Eng, 6(6), 3335-3348. (Read full publication)
    54. Khan MS, Yamashita K, Sharma V, Ranjan R, Dosdall DJ (2020). RNAs and Gene Expression Predicting Postoperative Atrial Fibrillation in Cardiac Surgery Patients Undergoing Coronary Artery Bypass Grafting. J Clin Med, 9(4). (Read full publication)
    55. Shah AR, Khan MS, Hirahara AM, Lange M, Ranjan R, Dosdall DJ (2020). A real-time system for selectively sensing and pacing the His-bundle during sinus rhythm and ventricular fibrillation. Biomed Eng Online, 19(1), 19. (Read full publication)
    56. 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 R (2019). Systematic collection of patient-reported outcomes in atrial fibrillation: feasibility and initial results of the Utah mEVAL AF programme. Europace, 22(3), 368-374. (Read full publication)
    57. Yamashita K, Kwan E, Kamali R, Ghafoori E, Steinberg BA, MacLeod RS, Dosdall DJ, Ranjan R (2020). Blanking period after radiofrequency ablation for atrial fibrillation guided by ablation lesion maturation based on serial MR imaging. J Cardiovasc Electrophysiol, 31(2), 450-456. (Read full publication)
    58. Yamashita K, Kamali R, Kwan E, MacLeod RS, Dosdall DJ, Ranjan R (2019). Effective Ablation Settings That Predict Chronic Scar After Left Atrial Ablation. JACC Clin Electrophysiol, 6(2), 143-152. (Read full publication)
    59. Yamashita K, Ghafoori E, Silvernagel J, Ashton J, J Dosdall D, MacLeod R, Ranjan R (2019). The Effective Contact Force to Minimize Edema Relative to Chronic Lesion Formation During Radiofrequency Ablation in Ventricular Wall. Int Heart J, 60(6), 1407-1414. (Read full publication)
    60. Getman MK, Wissner E, Ranjan R, Lalonde JP (2019). Relationship between time-to-isolation and freeze duration: Computational modeling of dosing for Arctic Front Advance and Arctic Front Advance Pro cryoballoons. J Cardiovasc Electrophysiol, 30(11), 2274-2282. (Read full publication)
    61. Angel N, Kholmovski EG, Ghafoori E, Dosdall DJ, MacLeod RS, Ranjan R (2020). Regions of High Dominant Frequency in Chronic Atrial Fibrillation Anchored to Areas of Atrial Fibrosis. Comput Cardiol (2010), 46. (Read full publication)
    62. Yamashita K, Silvernagel J, Kwan E, Kamali R, Ghafoori E, MacLeod R, Dosdall DJ, Ranjan R (2019). Changes in atrial electrophysiological and structural substrate and their relationship to histology in a long-term chronic canine atrial fibrillation model. Pacing Clin Electrophysiol, 42(7), 930-936. (Read full publication)
    63. Yamashita K, Kholmovski E, Ghafoori E, Kamali R, Kwan E, Lichter J, MacLeod R, Dosdall DJ, Ranjan R (2018). Characterization of edema after cryo and radiofrequency ablations based on serial magnetic resonance imaging. J Cardiovasc Electrophysiol, 30(2), 255-262. (Read full publication)
    64. Lichter J, Kholmovski EG, Coulombe N, Ghafoori E, Kamali R, MacLeod R, Ranjan R (2018). Real-time magnetic resonance imaging-guided cryoablation of the pulmonary veins with acute freeze-zone and chronic lesion assessment. Europace, 21(1), 154-162. (Read full publication)
    65. Kholmovski EG, Silvernagel J, Angel N, Vijayakumar S, Thomas S, Dosdall D, MacLeod R, Marrouche NF, Ranjan R (2018). Acute noncontrast T1-weighted magnetic resonance imaging predicts chronic radiofrequency ablation lesions. J Cardiovasc Electrophysiol, 29(11), 1556-1562. (Read full publication)
    66. Thomas S, Silvernagel J, Angel N, Kholmovski E, Ghafoori E, Hu N, Ashton J, Dosdall DJ, MacLeod R, Ranjan R (2018). Higher contact force during radiofrequency ablation leads to a much larger increase in edema as compared to chronic lesion size. J Cardiovasc Electrophysiol, 29(8), 1143-1149. (Read full publication)
    67. Yamashita K, Quang C, Schroeder JD, DiBella E, Han F, MacLeod R, Dosdall DJ, Ranjan R (2018). Distance between the left atrium and the vertebral body is predictive of esophageal movement in serial MR imaging. J Interv Card Electrophysiol, 52(2), 149-156. (Read full publication)
    68. Ghafoori E, Angel N, Dosdall DJ, MacLeod RS, Ranjan R (2018). Atrial fibrillation observed on surface ECG can be atrial flutter or atrial tachycardia. J Electrocardiol, 51(6S), S67-S71. (Read full publication)
    69. Panitchob N, Li L, Huang J, Ranjan R, Ideker RE, Dosdall DJ (2017). Endocardial Activation Drives Activation Patterns During Long-Duration Ventricular Fibrillation and Defibrillation. Circ Arrhythm Electrophysiol, 10(12). (Read full publication)
    70. Ghafoori E, Kholmovski EG, Thomas S, Silvernagel J, Angel N, Hu N, Dosdall DJ, MacLeod R, Ranjan R (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]. Circ Arrhythm Electrophysiol, 10(11). (Read full publication)
    71. Huang S, Wu L, Huang J, Panitchob N, Hu N, Ranjan R, Dosdall DJ (2017). Restitution characteristics of His bundle and working myocardium in isolated rabbit hearts. PLoS One, 12(10), e0186880. (Read full publication)
    72. 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 KL (2016). Increased Susceptibility to Atrial Fibrillation Secondary to Atrial Fibrosis in Transgenic Goats Expressing Transforming Growth Factor-β1. J Cardiovasc Electrophysiol, 27(10), 1220-1229. (Read full publication)
    73. Kholmovski EG, Coulombe N, Silvernagel J, Angel N, Parker D, Macleod R, Marrouche N, Ranjan R (2016). Real-Time MRI-Guided Cardiac Cryo-Ablation: A Feasibility Study. J Cardiovasc Electrophysiol, 27(5), 602-8. (Read full publication)
    74. Angel N, Li LI, Macleod RS, Marrouche N, Ranjan R, Dosdall DJ (2015). Diverse Fibrosis Architecture and Premature Stimulation Facilitate Initiation of Reentrant Activity Following Chronic Atrial Fibrillation. J Cardiovasc Electrophysiol, 26(12), 1352-60. (Read full publication)
    75. Parmar BR, Jarrett TR, Kholmovski EG, Hu N, Parker D, MacLeod RS, Marrouche NF, Ranjan R (2015). Poor scar formation after ablation is associated with atrial fibrillation recurrence. J Interv Card Electrophysiol, 44(3), 247-56. (Read full publication)
    76. Fitts M, Breton E, Kholmovski EG, Dosdall DJ, Vijayakumar S, Hong KP, Ranjan R, Marrouche NF, Axel L, Kim D (2013). Arrhythmia insensitive rapid cardiac T1 mapping pulse sequence. Magn Reson Med, 70(5), 1274-82. (Read full publication)
    77. Higuchi K, Akkaya M, Koopmann M, Blauer JJ, Burgon NS, Damal K, Ranjan R, Kholmovski E, Macleod RS, Marrouche NF (2013). The effect of fat pad modification during ablation of atrial fibrillation: late gadolinium enhancement MRI analysis. Pacing Clin Electrophysiol, 36(4), 467-76. (Read full publication)
    78. Ranjan R, Kholmovski EG, Blauer J, Vijayakumar S, Volland NA, Salama ME, Parker DL, MacLeod R, Marrouche NF (2012). Identification and acute targeting of gaps in atrial ablation lesion sets using a real-time magnetic resonance imaging system. Circ Arrhythm Electrophysiol, 5(6), 1130-5. (Read full publication)
    79. Akoum N, McGann C, Vergara G, Badger T, Ranjan R, Mahnkopf C, Kholmovski E, Macleod R, Marrouche N (2012). Atrial fibrosis quantified using late gadolinium enhancement MRI is associated with sinus node dysfunction requiring pacemaker implant. J Cardiovasc Electrophysiol, 23(1), 44-50. (Read full publication)
    80. Ranjan R (2012). Magnetic resonance imaging in clinical cardiac electrophysiology. Crit Rev Biomed Eng, 40(5), 409-26. (Read full publication)
    81. Ranjan R, Kato R, Zviman MM, Dickfeld TM, Roguin A, Berger RD, Tomaselli GF, Halperin HR (2011). Gaps in the ablation line as a potential cause of recovery from electrical isolation and their visualization using MRI. Circ Arrhythm Electrophysiol, 4(3), 279-86. (Read full publication)
    82. Ranjan R, Henrikson CA (2010). ICD implantation after crossing a totally occluded subclavian vein via collaterals from the superior vena cava. Pacing Clin Electrophysiol, 33(2), e14-6. (Read full publication)
    83. Yannopoulos D, Zviman M, Castro V, Kolandaivelu A, Ranjan R, Wilson RF, Halperin HR (2009). Intra-cardiopulmonary resuscitation hypothermia with and without volume loading in an ischemic model of cardiac arrest. Circulation, 120(14), 1426-35. (Read full publication)
    84. Ranjan R, Tomaselli GF, Marban E (1999). A novel mechanism of anode-break stimulation predicted by bidomain modeling. Circ Res, 84(2), 153-6. (Read full publication)
    85. 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. (Read full publication)
    86. 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. (Read full publication)
    87. Baykal A, Ranjan R, Thakor NV (1997). Estimation of the ventricular fibrillation duration by autoregressive modeling. IEEE Trans Biomed Eng, 44(5), 349-56. (Read full publication)
    88. 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. (Read full publication)
    89. 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. (Read full publication)
    90. 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. (Read full publication)
    91. Casaleggio A, Corana A, Ranjan R, Thakor NV (1996). Dimensional analysis of the electrical activity in fibrillating isolated hearts. Int J Bifurcat Chaos, 6, 1547-1561.
    92. Ranjan R, Thakor NV (1995). Electrical stimulation of cardiac myocytes. Ann Biomed Eng, 23(6), 812-21. (Read full publication)
    93. Baykal A, Ranjan R, Thakor NV (1994). Model-based analysis of the ECG during early stages of ventricular fibrillation. J Electrocardiol, 27 Suppl, 84-90. (Read full publication)

    Review

    1. Burnham TS, Ranjan R, Konstantinidis K, Steinberg BA, Bunch TJ (2025). Fat, fib, and forgetfulness: The interplay between adiposity, atrial fibrillation, and dementia. [Review]. Prog Cardiovasc Dis. (Read full publication)
    2. Crawford M, Steinberg BA, Ranjan R, Konstantinidis K, Navaravong L, Bunch TJ (2023). Mortality benefit with AF ablation: Impact of normal sinus rhythm seen in CABANA and EAST AFnet. [Review]. J Cardiovasc Electrophysiol, 35(3), 538-546. (Read full publication)
    3. Kogelschatz B, Zenger B, Steinberg BA, Ranjan R, Jared Bunch T (2023). Atrial fibrillation and the risk of early-onset dementia and cognitive decline: An updated review. [Review]. Trends Cardiovasc Med. (Read full publication)
    4. Zenger B, Rizzi S, Steinberg BA, Ranjan R, Bunch TJ (2022). This is Your Brain, and This is Your Brain on Atrial Fibrillation: The Roles of Cardiac Malperfusion Events and Vascular Dysfunction in Cognitive Impairment. [Review]. Arrhythm Electrophysiol Rev, 12, e01. (Read full publication)

    Book Chapter

    1. Ravi Ranjan and Joseph E Marine (05/31/2010). Basics of Biventricular Pacing Systems: Principles and Timing Cycles. In A. Al-Ahmad, K.A. Ellenbogen, A. Natale, P.J. Wang (Eds.), Pacemakers and Implantable Cardioverter Defibrillators: An Expert's Manual (1st Edition). Minneapolis: Cardiotext Publishing.

    Editorial

    1. Lehmann HI, Stoddard GJ, Ranjan R (2024). Pulse Field Ablation of Atrial Fibrillation and Hemolysis-Red Blood Cells Also Demand Our Attention. J Cardiovasc Electrophysiol, 35(12), 2411-2413. (Read full publication)
    2. Ishidoya Y, Ranjan R (2022). Using MRI to predict ventricular tachycardia recurrence and provide guidance for ablation? Heart Rhythm, 19(10), 1611-1612. (Read full publication)
    3. Ishidoya Y, Ranjan R (2021). Novel energy source for ablating the pulmonary veins; Is pulsed field ablation the new ablation modality? J Cardiovasc Electrophysiol, 32(4), 970-972. (Read full publication)
    4. Ranjan R (2020). Is it Time to Screen All Patients for Sleep Apnea Before Atrial Fibrillation Ablation? JACC Clin Electrophysiol, 6(12), 1507-1508. (Read full publication)
    5. Bunch TJ, Ranjan R (2019). Overestimation and Underweighting of Rare Events: The Challenge of Preventing Atrial-Esophageal Fistula After Ablation. JACC Clin Electrophysiol, 6(3), 269-271. (Read full publication)
    6. Ranjan R (2015). Is Good Contact Enough for Atrial Fibrillation Ablation? JACC Clin Electrophysiol, 1(5), 432-433. (Read full publication)
    7. Yannopoulos D, Kolandaivelu A, Ranjan R (2008). Flow or no flow: that is the question! Crit Care Med, 36(5), 1677-8. (Read full publication)

    Letter

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

    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 TJ (2021). Long-term outcomes in patients treated with flecainide for atrial fibrillation with stable coronary artery disease. Am Heart J (243, pp. 127-139). United States. (Read full publication)
    2. Khan MS, Lange M, Ranjan R, Sharma V, Glotzbach JP, Selzman C, Dosdall DJ (2021). Premature atrial stimulation accentuates conduction abnormalities in cardiac surgery patients that develop postoperative atrial fibrillation. J Electrocardiol (69, pp. 36-43). United States. (Read full publication)
    3. Lange M, Hirahara AM, Ranjan R, Stoddard GJ, Dosdall DJ (2021). Atrial slow conduction develops and dynamically expands during premature stimulation in an animal model of persistent atrial fibrillation. PLoS One (16(10), pp. e0258285). United States. (Read full publication)

    Patent

    1. Polejaeva I, Wang Z, Hu S, Ranjan R, Thomas AJ, Davies CJ, White KL (2019). Model and Method for a Transgenic Bovidae Expressing Cardiac Fibrosis and Associated Pathology. U.S. Patent No. Application has been filed and published as US 2015/0033370 by the United States Patent and Trademark Office. Washington, D.C.:U.S. Patent and Trademark Office.
    2. (2018). Implantable cardiac devices and methods for delivering low energy, pain-free defibrillation signals for ventricular arrhythmias. U.S. Patent No. 0765875. Washington, D.C.:U.S. Patent and Trademark Office.