By Associate Professor Mayooran Namasivayam

Book Chapters

Namasivayam M; Picard M, 2021, 'Dilated Cardiomyopathy: Etiology, Pathophysiology and Echocardiographic Evaluation', in Lang R; Goldstein S; Kronzon I; Khanderia B; Saric M; Mor-Avi V (ed.), ASE's Comprehensive Echocardiography, Elsevier, Philadelphia, pp. 373 - 377

Namasivayam M; Bernard S; Sanborn D, 2021, 'Echocardiography in Arrhythmogenic Right Ventricular Cardiomyopathy', in Lang R; Goldstein S; Kronzon I; Khanderia B; Saric M; Mor-Avi V (ed.), ASE's Comprehensive Echocardiography, Elsevier, Philadelphia, pp. 409 - 412

Namasivayam M; Cigarroa RJ; Inglessis I; Hung JW, 2020, 'Mitral and Tricuspid Valve Disease', in MGH Cardiology Board Review: Second Edition, pp. 439 - 466, http://dx.doi.org/10.1007/978-3-030-45792-1_21

Namasivayam M; Shaw M, 2019, 'Interventional transoesophageal echocardiography', in Interventional Cardiology and Cardiac Catheterisation, CRC Press, pp. 517 - 524, http://dx.doi.org/10.1201/9781351060356-36

Journal articles

Namasivayam M; Churchill TW; Capoulade R; Pibarot P; Danik JS; Picard MH; Levine RA; Hung J, 2024, 'Combined Value of Dimensionless Index and Transvalvular Flow Rate in Risk Stratification of Aortic Stenosis', American Journal of Cardiology, 213, pp. 69 - 71, http://dx.doi.org/10.1016/j.amjcard.2023.12.008

Meredith T; Roy D; Hayward C; Feneley M; Kovacic J; Muller D; Namasivayam M, 2024, 'Strain Assessment in Aortic Stenosis: Pathophysiology and Clinical Utility', Journal of the American Society of Echocardiography, 37, pp. 64 - 76, http://dx.doi.org/10.1016/j.echo.2023.10.001

Namasivayam M; Bertrand PB; Bernard S; Churchill TW; Khurshid S; Marcus FI; Mestroni L; Saffitz JE; Towbin JA; Zareba W; Picard MH; Sanborn DY, 2023, 'Utility of Left and Right Ventricular Strain in Arrhythmogenic Right Ventricular Cardiomyopathy: A Prospective Multicenter Registry', Circulation: Cardiovascular Imaging, 16, pp. E015671, http://dx.doi.org/10.1161/CIRCIMAGING.123.015671

Dahan S; Dal-Bianco J; Plakht Y; Namasivayam M; Zeng X; Passeri J; Yucel E; Picard MH; Levine R; Hung J, 2023, 'Abstract 18349: The Impact of Concomitant Mitral Regurgitation on Aortic Valve Intervention Outcomes in Paradoxical Low-Flow Low-Gradient Severe Aortic Stenosis', Circulation, 148, http://dx.doi.org/10.1161/circ.148.suppl_1.18349

Meredith T; Roy D; Muller D; Namasivayam M, 2023, 'A Clinician’s Guide to the Changing Aortic Stenosis Landscape: Updates in Aortic Stenosis Diagnosis, Surveillance and Management', Current Treatment Options in Cardiovascular Medicine, 25, pp. 675 - 688, http://dx.doi.org/10.1007/s11936-023-01020-4

Bart NK; Hungerford SL; Namasivayam M; Granger E; Conellan M; Kotlyar E; Muthiah K; Jabbour A; Hayward C; Jansz PC; Keogh AM; MacDonald PS, 2023, 'Tricuspid Regurgitation After Heart Transplantation: The Cause or the Result of Graft Dysfunction?', Transplantation, 107, pp. 1390 - 1397, http://dx.doi.org/10.1097/TP.0000000000004511

Churchill TW; Yucel E; Bernard S; Namasivayam M; Nagata Y; Lau ES; Deferm S; He W; Danik JS; Sanborn DY; Picard MH; Levine RA; Hung J; Bertrand PB, 2023, 'Sex Differences in Extensive Mitral Annular Calcification With Associated Mitral Valve Dysfunction', American Journal of Cardiology, 193, pp. 83 - 90, http://dx.doi.org/10.1016/j.amjcard.2023.02.005

Song N; Adji AI; Hungerford SL; Namasivayam MJ; Hayward CS; Jabbour A; Muller DWM, 2023, 'Pulsatile energy consumption as a surrogate marker for vascular afterload improves with time post transcatheter aortic valve replacement in patients with aortic stenosis', Hypertension Research, 46, pp. 730 - 741, http://dx.doi.org/10.1038/s41440-022-01127-4

Dai W; Nazzari H; Namasivayam M; Hung J; Stultz CM, 2023, 'Identifying Aortic Stenosis With a Single Parasternal Long-Axis Video Using Deep Learning', Journal of the American Society of Echocardiography, 36, pp. 116 - 118, http://dx.doi.org/10.1016/j.echo.2022.10.014

Namasivayam M; Meredith T; Muller DWM; Roy DA; Roy AK; Kovacic JC; Hayward CS; Feneley MP, 2023, 'Machine learning prediction of progressive subclinical myocardial dysfunction in moderate aortic stenosis', Frontiers in Cardiovascular Medicine, 10, http://dx.doi.org/10.3389/fcvm.2023.1153814

Song N; Namasivayam M; Hayward C; Muller D; Adji A, 2023, 'Baseline Transvalvular Gradient Predicts Reduction in Pressure Augmentation Index Following Transcatheter Aortic Valve Replacement in Patients With Aortic Stenosis', Heart, Lung and Circulation, 32, pp. S132 - S132, http://dx.doi.org/10.1016/j.hlc.2023.06.023

Song N; Hungerford S; Namasivayam M; Jabbour A; Hayward C; Muller D; Adji A, 2023, 'Nitroglycerin Reduces Pulsatile Afterload But Maintains Cardiac Output in Patients With Aortic Stenosis', Heart, Lung and Circulation, 32, pp. S135 - S135, http://dx.doi.org/10.1016/j.hlc.2023.06.031

Namasivayam M; Churchill T; Capoulade R; Pibarot P; Danik JS; Picard MH; Levine RA; Hung JW, 2023, 'THE FLOW KNOWS: VALUE OF DIMENSIONLESS INDEX AND TRANSVALVULAR FLOW RATE IN RISK STRATIFICATION OF AORTIC STENOSIS', Journal of the American College of Cardiology, 81, pp. 1399 - 1399, http://dx.doi.org/10.1016/s0735-1097(23)01843-0

Namasivayam M; Myers PD; Guttag JV; Capoulade R; Pibarot P; Picard MH; Hung J; Stultz CM, 2022, 'Predicting outcomes in patients with aortic stenosis using machine learning: The Aortic Stenosis Risk (ASteRisk) score', Open Heart, 9, http://dx.doi.org/10.1136/openhrt-2022-001990

Namasivayam M; Lau ES; Zern EK; Schoenike MW; Hardin KM; Sbarbaro JA; Cunningham TF; Farrell RM; Rouvina J; Kowal A; Bhat RR; Brooks LC; Nayor M; Shah RV; Ho JE; Malhotra R; Lewis GD, 2022, 'Exercise Blood Pressure in Heart Failure With Preserved and Reduced Ejection Fraction', JACC: Heart Failure, 10, pp. 278 - 286, http://dx.doi.org/10.1016/j.jchf.2022.01.012

Deferm S; Bertrand PB; Yucel E; Bernard S; Namasivayam M; Nagata Y; Dal-Bianco JP; Sanborn DY; Picard MH; Levine RA; Hung J; Churchill TW, 2022, 'Impact of Pulmonary Hypertension on Outcomes in Patients With Mitral Annular Calcium and Associated Mitral Valve Dysfunction', American Journal of Cardiology, 167, pp. 76 - 82, http://dx.doi.org/10.1016/j.amjcard.2021.11.047

Lau ES; PANAH LG; ZERN EK; LIU EE; FARRELL R; SCHOENIKE MW; NAMASIVAYAM M; CHURCHILL TW; CURRERI LISA; MALHOTRA R; NAYOR M; LEWIS GD; HO JE, 2022, 'Arterial Stiffness and Vascular Load in HFpEF: Differences Among Women and Men', Journal of Cardiac Failure, 28, pp. 202 - 211, http://dx.doi.org/10.1016/j.cardfail.2021.10.019

Namasivayam M; Churchill T; Capoulade R; Pibarot P; Danik JS; Picard MH; Levine RA; Hung JW, 2022, 'DIMENSIONLESS INDEX COMPLEMENTS TRANSVALVULAR FLOW RATE IN SOLVING DISCORDANT LOW GRADIENT AORTIC STENOSIS', Journal of the American College of Cardiology, 79, pp. 1205 - 1205, http://dx.doi.org/10.1016/s0735-1097(22)02196-9

Song N; Adji A; Hungerford S; Namasivayam M; Hayward C; Jabbour A; Muller D, 2022, 'Pulsatile Cardiac Efficiency May Improve Prior to Observable Left Ventricular Reverse Remodelling Following Transcatheter Aortic Valve Replacement for Aortic Stenosis', Heart, Lung and Circulation, 31, pp. S223 - S223, http://dx.doi.org/10.1016/j.hlc.2022.06.371

Song N; Adji A; Hungerford S; Namasivayam M; Hayward CS; Jabbour A; Muller D, 2021, 'Abstract 12395: Nitroglycerin Reduces Pulsatile Arterial Load But Not Steady State Load In Aortic Stenosis Patients Before Or After Transcatheter Aortic Valve Implantation', Circulation, 144, pp. a12395 - a12395, http://dx.doi.org/10.1161/circ.144.suppl_1.12395

Namasivayam M, 2021, 'Machine Learning in Cardiac Imaging: Exploring the Art of Cluster Analysis', Journal of the American Society of Echocardiography, 34, pp. 913 - 915, http://dx.doi.org/10.1016/j.echo.2021.05.011

Zern EK; Ho JE; Panah LG; Lau ES; Liu E; Farrell R; Sbarbaro JA; Schoenike MW; Pappagianopoulos PP; Namasivayam M; Malhotra R; Nayor M; Lewis GD, 2021, 'Exercise Intolerance in Heart Failure With Preserved Ejection Fraction: Arterial Stiffness and Aabnormal Left Ventricular Hemodynamic Responses During Exercise', Journal of Cardiac Failure, 27, pp. 625 - 634, http://dx.doi.org/10.1016/j.cardfail.2021.02.011

Hungerford SL; Adji AI; Bart NK; Lin L; Namasivayam MJ; Schnegg B; Jabbour A; O’Rourke MF; Hayward CS; Muller DWM, 2021, 'A novel method to assess valvulo-arterial load in patients with aortic valve stenosis', Journal of Hypertension, 39, pp. 437 - 446, http://dx.doi.org/10.1097/HJH.0000000000002648

Hungerford S; Bart N; Jansz P; Kay S; Emmanuel S; Namasivayam M; Dahle G; Duncan A; Hayward C; Muller DWM, 2021, 'Improved right ventricular function following transapical transcatheter mitral valve implantation for severe mitral regurgitation', IJC Heart and Vasculature, 32, http://dx.doi.org/10.1016/j.ijcha.2020.100687

Bernard S; Churchill TW; Namasivayam M; Bertrand PB, 2021, 'Agitated Saline Contrast Echocardiography in the Identification of Intra- and Extracardiac Shunts: Connecting the Dots', Journal of the American Society of Echocardiography, 34, pp. 1 - 12, http://dx.doi.org/10.1016/j.echo.2020.09.013

Situ Y; Lin L; Emmanuel S; Subbiah R; Watson B; Namasivayam M; McCrohon J; Jabbour A; Holloway CJ, 2021, 'The Usefulness of Cardiovascular Magnetic Resonance in the Assessment of Patients Before Pacemaker Implantation', JACC: Cardiovascular Imaging, 14, pp. 305 - 306, http://dx.doi.org/10.1016/j.jcmg.2020.07.031

Song N; Hungerford S; Pouliopoulos J; Namasivayam M; Adji A; Hayward C; Muller D, 2021, 'Non-Invasive Evaluation of Systemic Vascular Load in Patients With Aortic Stenosis Before and After Transcatheter Aortic Valve Replacement', Heart, Lung and Circulation, 30, pp. S112 - S113, http://dx.doi.org/10.1016/j.hlc.2021.06.046

Bertrand PB; Churchill TW; Yucel E; Namasivayam M; Bernard S; Nagata Y; He W; Andrews CT; Picard MH; Weyman AE; Levine RA; Hung J, 2020, 'Prognostic importance of the transmitral pressure gradient in mitral annular calcification with associated mitral valve dysfunction', European Heart Journal, 41, pp. 4321 - 4328, http://dx.doi.org/10.1093/eurheartj/ehaa819

Namasivayam M; Churchill TW; Dal-Bianco JP; Hung J, 2020, 'Updates to a Modern Dilemma: a Practical Approach to the Workup and Management of Low-Gradient Severe Aortic Stenosis Using Transvalvular Flow Rate', Current Treatment Options in Cardiovascular Medicine, 22, http://dx.doi.org/10.1007/s11936-020-00865-3

Malhotra R; Namasivayam M; Ghoshhajra BB; Passeri JJ; Hoenig PA; Stone JR, 2020, 'Case 36-2020: A 72-year-old woman with dark urine and weakness', New England Journal of Medicine, 383, pp. 2066 - 2076, http://dx.doi.org/10.1056/NEJMcpc2027077

Crousillat D; Namasivayam M; Passeri JJ, 2020, 'Severe, Symptomatic Aortic Stenosis: an Update on the Diagnostic and Treatment Tools in Our Arsenal', Current Treatment Options in Cardiovascular Medicine, 22, http://dx.doi.org/10.1007/s11936-020-00847-5

Bertrand PB; Nagata Y; Namasivayam M; Levine RA, 2020, 'The Artifact that Tells the Truth: Color Doppler Splay Unmasking Significant Mitral Regurgitation', Journal of the American Society of Echocardiography, 33, pp. 1220 - 1222, http://dx.doi.org/10.1016/j.echo.2020.08.003

Namasivayam M; Churchill TW; Hung J, 2020, 'Reply: Refining Prognostication of Severe Aortic Stenosis: The Q Factor', Journal of the American College of Cardiology, 76, pp. 634 - 635, http://dx.doi.org/10.1016/j.jacc.2020.06.014

Churchill TW; Bertrand PB; Bernard S; Namasivayam M; Churchill J; Crousillat D; Davis EF; Hung J; Picard MH, 2020, 'Echocardiographic Features of COVID-19 Illness and Association with Cardiac Biomarkers', Journal of the American Society of Echocardiography, 33, pp. 1053 - 1054, http://dx.doi.org/10.1016/j.echo.2020.05.028

Nayor M; Houstis NE; Namasivayam M; Rouvina J; Hardin C; Shah RV; Ho JE; Malhotra R; Lewis GD, 2020, 'Impaired Exercise Tolerance in Heart Failure With Preserved Ejection Fraction: Quantification of Multiorgan System Reserve Capacity', JACC: Heart Failure, 8, pp. 605 - 617, http://dx.doi.org/10.1016/j.jchf.2020.03.008

Namasivayam M; Dal-Bianco JP, 2020, 'Progression of aortic stenosis with bicuspid aortic valves: Evidence and intuition', European Heart Journal Cardiovascular Imaging, 21, pp. 735 - 736, http://dx.doi.org/10.1093/ehjci/jeaa141

Namasivayam M; Adji A; Lin L; Hayward CS; Feneley MP; O’Rourke MF; Muller DWM; Jabbour A, 2020, 'Non-Invasive Quantification of Ventricular Contractility, Arterial Elastic Function and Ventriculo-Arterial Coupling from a Single Diagnostic Encounter Using Simultaneous Arterial Tonometry and Magnetic Resonance Imaging', Cardiovascular Engineering and Technology, 11, pp. 283 - 294, http://dx.doi.org/10.1007/s13239-020-00462-2

Yucel E; Bertrand PB; Churchill JL; Namasivayam M, 2020, 'The tricuspid valve in review: Anatomy, pathophysiology and echocardiographic assessment with focus on functional tricuspid regurgitation', Journal of Thoracic Disease, 12, pp. 2945 - 2954, http://dx.doi.org/10.21037/jtd.2020.02.42

Namasivayam M; He W; Churchill TW; Capoulade R; Liu S; Lee H; Danik JS; Picard MH; Pibarot P; Levine RA; Hung J, 2020, 'Transvalvular Flow Rate Determines Prognostic Value of Aortic Valve Area in Aortic Stenosis', Journal of the American College of Cardiology, 75, pp. 1758 - 1769, http://dx.doi.org/10.1016/j.jacc.2020.02.046

Liu S; Churchill J; Hua L; Zeng X; Rhoades V; Namasivayam M; Baliyan V; Ghoshhajra BB; Dong T; Dal-Bianco JP; Passeri JJ; Levine RA; Hung J, 2020, 'Direct Planimetry of Left Ventricular Outflow Tract Area by Simultaneous Biplane Imaging: Challenging the Need for a Circular Assumption of the Left Ventricular Outflow Tract in the Assessment of Aortic Stenosis', Journal of the American Society of Echocardiography, 33, pp. 461 - 468, http://dx.doi.org/10.1016/j.echo.2019.12.002

Namasivayam M; Picard MH, 2020, 'Flow Rate in Aortic Stenosis: Clinical Tool, Hemodynamic Insight, or Both?', Journal of the American Society of Echocardiography, 33, pp. 449 - 451, http://dx.doi.org/10.1016/j.echo.2020.01.015

Namasivayam M; Bernard S; Bertrand P; Marcus FI; Mestroni L; Saffitz J; Towbin JA; Zareba W; Picard M; Sanborn DMY, 2020, 'DIAGNOSTIC AND PROGNOSTIC UTILITY OF RIGHT VENTRICULAR STRAIN IN ARRHYTHMOGENIC RIGHT VENTRICULAR CARDIOMYOPATHY: A PROSPECTIVE MULTICENTER REGISTRY', JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 75, pp. 1552 - 1552, https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000522979101538&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=891bb5ab6ba270e68a29b250adbe88d1

Bertrand PB; Namasivayam M, 2019, 'Left ventricular assist device after percutaneous mitral valve repair: Can we go there?', International Journal of Cardiology, 288, pp. 55 - 56, http://dx.doi.org/10.1016/j.ijcard.2019.03.052

Bernard S; Namasivayam M; Dudzinski DM, 2019, 'Reflections on Echocardiography in Pulmonary Embolism—Literally and Figuratively', Journal of the American Society of Echocardiography, 32, pp. 807 - 810, http://dx.doi.org/10.1016/j.echo.2019.05.007

Namasivayam M; Hayward CS; Muller DWM; Jabbour A; Feneley MP, 2019, 'Ventricular-Vascular Coupling Ratio Is the Ejection Fraction in Disguise', Journal of the American Society of Echocardiography, 32, pp. 791, http://dx.doi.org/10.1016/j.echo.2019.01.017

O'Rourke M; Namasivayam M; Adji A, 2019, 'Takotsubo cardiomyopathy: an extreme in the cardiovascular continuum?', Journal of Hypertension, 37, pp. 501 - 503, http://dx.doi.org/10.1097/HJH.0000000000001965

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