| Ionic mechanisms underlying human atrial action potential properties: insights from a mathematical model M Courtemanche, RJ Ramirez, S Nattel American Journal of Physiology-Heart and Circulatory Physiology 275 (1 …, 1998 | 1403 | 1998 |
| Ionic targets for drug therapy and atrial fibrillation-induced electrical remodeling: insights from a mathematical model M Courtemanche, RJ Ramirez, S Nattel Cardiovascular research 42 (2), 477-489, 1999 | 357 | 1999 |
| Regulation of cardiac excitation–contraction coupling by action potential repolarization: role of the transient outward potassium current (Ito) R Sah, RJ Ramirez, GY Oudit, D Gidrewicz, MG Trivieri, C Zobel, ... The Journal of physiology 546 (1), 5-18, 2003 | 290 | 2003 |
| The molecular physiology of the cardiac transient outward potassium current (Ito) in normal and diseased myocardium GY Oudit, Z Kassiri, R Sah, RJ Ramirez, C Zobel, PH Backx Journal of molecular and cellular cardiology 33 (5), 851-872, 2001 | 269 | 2001 |
| Characterization of the arrhythmogenic substrate in ischemic and nonischemic cardiomyopathy: implications for catheter ablation of hemodynamically unstable ventricular tachycardia S Nakahara, R Tung, RJ Ramirez, Y Michowitz, M Vaseghi, E Buch, ... Journal of the American College of Cardiology 55 (21), 2355-2365, 2010 | 258 | 2010 |
| Mathematical analysis of canine atrial action potentials: rate, regional factors, and electrical remodeling RJ Ramirez, S Nattel, M Courtemanche American Journal of Physiology-Heart and Circulatory Physiology 279 (4 …, 2000 | 232 | 2000 |
| Modulation of Ca2+ Release in Cardiac Myocytes by Changes in Repolarization Rate: Role of Phase-1 Action Potential Repolarization in Excitation-Contraction … R Sah, RJ Ramirez, PH Backx Circulation research 90 (2), 165-173, 2002 | 167 | 2002 |
| Dominant frequency increase rate predicts transition from paroxysmal to long-term persistent atrial fibrillation RP Martins, K Kaur, E Hwang, RJ Ramirez, BC Willis, D Filgueiras-Rama, ... Circulation 129 (14), 1472-1482, 2014 | 150 | 2014 |
| Galectin-3 regulates atrial fibrillation remodeling and predicts catheter ablation outcomes Y Takemoto, RJ Ramirez, M Yokokawa, K Kaur, D Ponce-Balbuena, ... JACC: Basic to Translational Science 1 (3), 143-154, 2016 | 116 | 2016 |
| Alterations in action potential profile enhance excitation‐contraction coupling in rat cardiac myocytes R Sah, RJ Ramirez, R Kaprielian, PH Backx The Journal of physiology 533 (1), 201-214, 2001 | 103 | 2001 |
| Myosin light chain 2-based selection of human iPSC-derived early ventricular cardiac myocytes A Bizy, G Guerrero-Serna, B Hu, D Ponce-Balbuena, BC Willis, M Zarzoso, ... Stem cell research 11 (3), 1335-1347, 2013 | 98 | 2013 |
| Distribution of late potentials within infarct scars assessed by ultra high-density mapping S Nakahara, R Tung, RJ Ramirez, J Gima, I Wiener, A Mahajan, NG Boyle, ... Heart Rhythm 7 (12), 1817-1824, 2010 | 86 | 2010 |
| Time-dependent transients in an ionically based mathematical model of the canine atrial action potential J Kneller, RJ Ramirez, D Chartier, M Courtemanche, S Nattel American Journal of Physiology-Heart and Circulatory Physiology 282 (4 …, 2002 | 84 | 2002 |
| Distinguishing epicardial fat from scar: analysis of electrograms using high-density electroanatomic mapping in a novel porcine infarct model R Tung, S Nakahara, R Ramirez, C Lai, MC Fishbein, K Shivkumar Heart Rhythm 7 (3), 389-395, 2010 | 73 | 2010 |
| Cardiac Kir2.1 and NaV1.5 Channels Traffic Together to the Sarcolemma to Control Excitability D Ponce-Balbuena, G Guerrero-Serna, CR Valdivia, R Caballero, ... Circulation research 122 (11), 1501-1516, 2018 | 72 | 2018 |
| NOX4-dependent hydrogen peroxide overproduction in human atrial fibrillation and HL-1 atrial cells: relationship to hypertension J Zhang, JY Youn, A Kim, R Ramirez, L Gao, D Ngo, J Scovotti, ... Frontiers in physiology 3, 140, 2012 | 61 | 2012 |
| Eplerenone reduces atrial fibrillation burden without preventing atrial electrical remodeling Y Takemoto, RJ Ramirez, K Kaur, O Salvador-Montañés, ... Journal of the American College of Cardiology 70 (23), 2893-2905, 2017 | 56 | 2017 |
| Intrapericardial balloon placement for prevention of collateral injury during catheter ablation of the left atrium in a porcine model S Nakahara, RJ Ramirez, E Buch, Y Michowitz, M Vaseghi, C De Diego, ... Heart Rhythm 7 (1), 81-87, 2010 | 48 | 2010 |
| The phosphoinositide 3-kinase inhibitor LY294002 enhances cardiac myocyte contractility via a direct inhibition of Ik,slow currents H Sun, GY Oudit, RJ Ramirez, D Costantini, PH Backx Cardiovascular research 62 (3), 509-520, 2004 | 47 | 2004 |
| Characterization of myocardial scars: electrophysiological imaging correlates in a porcine infarct model S Nakahara, M Vaseghi, RJ Ramirez, CG Fonseca, CK Lai, JP Finn, ... Heart rhythm 8 (7), 1060-1067, 2011 | 39 | 2011 |
Shivkumar, KalyanamProfessor of Medicine (Cardiology), Radiology & Bioengineering, UCLAVerified email at mednet.ucla.edu
