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

Meredith T; Roy D; Mohammed F; Pomeroy A; Feneley MP; Muller DWM; Hayward C; Namasivayam M, 2026, 'Strain characterization of multi-chamber cardiac dysfunction and associated prognosis in patients undergoing TAVR for severe AS', Echo Research and Practice, 13, http://dx.doi.org/10.1186/s44156-026-00122-6

Donati TG; Agbariah A; Benz DC; Hebeisen M; Saguner AM; Duru F; Olsen PAS; Bigseth RS; Namasivayam M; Sanborn DY; Picard MH; Savvatis K; Protonotarios A; Elliott PM; Bukhari S; James CA; Calkins H; Hays AG; Haugaa KH; Tanner FC, 2026, 'Tricuspid regurgitation and outcomes in arrhythmogenic right ventricular cardiomyopathy: role of tricuspid annulus dilatation', European Heart Journal, pp. ehag694, http://dx.doi.org/10.1093/eurheartj/ehag694

Fanous N; Zubrzycki N; Weir L; Mohammed F; Pomeroy A; Meredith T; Roy D; Roy A; Kovacic J; Muller D; Feneley M; Elmariah S; Namasivayam M, 2026, 'Delay and attrition in severe aortic stenosis: a four-checkpoint systematic review of pathway bottlenecks and interventions', European Heart Journal - Quality of Care and Clinical Outcomes, pp. qcag123, http://dx.doi.org/10.1093/ehjqcco/qcag123

Song N; Namasivayam M; Hayward CS; Muller DWM; Adji A, 2026, 'Evaluating Arterial Stiffness in Aortic Stenosis', Pulse, pp. 1 - 16, http://dx.doi.org/10.1159/000553233

Meredith T; Picard MH; Churchill TW; Bernard S; Bertrand PB; Sanborn DMY; Namasivayam M, 2026, 'State-of-the-Art in Echocardiographic Strain Imaging of Arrhythmogenic Cardiomyopathy', Journal of the American Society of Echocardiography, 39, pp. 206 - 219, http://dx.doi.org/10.1016/j.echo.2025.11.007

Goubar T; Arriagada A; Jiang F; Watson A; Namasivayam M; Roy A; Muller D; Roy D, 2026, '17-Year Experience With Valve-in-Valve and TAVI-in-TAVI Procedures in a High-Volume Centre', Heart Lung and Circulation, 35, pp. s697, http://dx.doi.org/10.1016/j.hlc.2026.07.1124

Mohammed F; Meredith T; Adams H; Pomeroy A; Moran TP; Barbieri S; Meijering E; Roy DA; Kovacic JC; Hayward CS; Muller DWM; Feneley MP; Namasivayam M, 2026, '26-A-15088-ACC CLASSIFICATION OF AORTIC STENOSIS SEVERITY USING AUTOMATED LEAFLET TRACKING: INTERNAL AND EXTERNAL VALIDATION', Journal of the American College of Cardiology, 87, pp. a907, http://dx.doi.org/10.1016/j.jacc.2026.02.2238

Le N; Fu M; Iyer A; Namasivayam M; Wang LW; Subbiah R, 2026, '26-CCC-9234-ACC ONE HEART, TWO SHUNTS: MULTIMODALITY IMAGING AND REPAIR OF CORONARY-CAMERAL FISTULA AND PAPVR', Journal of the American College of Cardiology, 87, pp. a1760 - a1761, http://dx.doi.org/10.1016/j.jacc.2026.02.4406

Fanous N; Weir L; Zubrzycki N; Mohammed F; Pomeroy A; Meredith T; Roy D; Roy A; Kovacic J; Muller D; Feneley M; Elmariah S; Namasivayam M, 2026, '82001 | Reducing Time-to-TAVI: System-Level Interventions to Address Bottlenecks in Severe Aortic Stenosis', Structural Heart, 10, pp. 100867, http://dx.doi.org/10.1016/j.shj.2026.100867

Zubrzycki N; Meredith T; Mohammed F; Weir L; Pomeroy A; Fanous N; Muller D; Feneley M; Namasivayam M, 2026, '82732 | Aortic Valve Leaflet Excursion Is Independently Associated With Impaired Left Ventricular Strain in Aortic Stenosis', Structural Heart, 10, pp. 100905, http://dx.doi.org/10.1016/j.shj.2026.100905

Song N; Namasivayam M; Muller D; Hayward C; Adji A, 2026, 'Haemodynamic Predictors of Ventriculo-Arterial Coupling Post Transcathether Aortic Valve Replacement', Heart Lung and Circulation, 35, pp. s147 - s148, http://dx.doi.org/10.1016/j.hlc.2026.07.136

Le N; Wijesekera N; Garikapati K; Kathir K; Namasivayam M; Jansz P; Subbiah R, 2026, 'Papillary Fibroelastoma Mimicking Left Atrial Appendage Thrombus in a Patient With Atrial Fibrillation Undergoing Pre-Ablation Work-up', Heart Lung and Circulation, 35, pp. s515, http://dx.doi.org/10.1016/j.hlc.2026.07.787

Meredith T; Mohammed F; Pomeroy A; Barbieri S; Meijering E; Jorm L; Roy D; Hayward C; Kovacic JC; Muller DWM; Feneley MP; Namasivayam M, 2025, 'Aortic valve leaflet motion for diagnosis and classification of aortic stenosis using single view echocardiography', Journal of Cardiovascular Imaging, 33, http://dx.doi.org/10.1186/s44348-025-00051-8

Weir L; Meredith T; Hayward C; Muller D; Feneley M; Namasivayam M, 2025, 'Low-flow Low-gradient Aortic Stenosis: Foundations, Challenges, and Solutions', Current Treatment Options in Cardiovascular Medicine, 27, http://dx.doi.org/10.1007/s11936-025-01082-6

Song N; Hungerford SL; Namasivayam M; Jabbour A; Hayward CS; Muller DWM; Adji AI, 2025, 'Low flow state masks true arterial stiffness on pulse wave analysis in patients with severe aortic stenosis', Journal of Hypertension, 43, pp. 1407 - 1415, http://dx.doi.org/10.1097/HJH.0000000000004064

Cao JY; Wong NKP; Lo P; Wiltshire S; Presgrave N; Namasivayam M; Chour H; Boshell D; Tisch S; Roy D, 2025, 'Rare Case of Paradoxical Embolism Through Anomalous Systemic Vein-to-Pulmonary Vein Connection: When Zebras Are Zebras', Jacc Case Reports, 30, http://dx.doi.org/10.1016/j.jaccas.2025.104010

Kempton H; Namasivayam M; Meredith T; Shaw M; Jansz P; Muller DWM, 2025, 'Right Ventricular Function and Afterload Following Novel Transcatheter Tricuspid Valve Replacement', Jacc Case Reports, 30, http://dx.doi.org/10.1016/j.jaccas.2025.103312

Dahan S; Dal-Bianco JP; Plakht Y; Namasivayam M; Capoulade R; Zeng X; Passeri J; Yucel E; Picard MH; Levine RA; Hung J, 2025, 'Severe Mitral Regurgitation in Paradoxical Low-Flow, Low-Gradient Severe Aortic Stenosis', Circulation Cardiovascular Imaging, 18, pp. e017598, http://dx.doi.org/10.1161/CIRCIMAGING.124.017598

Meredith T; Mohammed F; Pomeroy A; Barbieri S; Meijering E; Jorm L; Roy D; Kovacic J; Feneley M; Hayward C; Muller D; Namasivayam M, 2025, 'Machine learning cluster analysis identifies increased 12-month mortality risk in transcatheter aortic valve replacement recipients', Frontiers in Cardiovascular Medicine, 12, pp. 1444658, http://dx.doi.org/10.3389/fcvm.2025.1444658

Meredith T; Mohammed F; Pomeroy A; Barbieri S; Meijering E; Jorm L; Roy D; Kovacic J; Muller D; Feneley M; Namasivayam M, 2025, 'TCT-593 Aortic Valve Leaflet Motion for Diagnosis and Classification of Aortic Stenosis Using Single View Echocardiography', Journal of the American College of Cardiology, 86, pp. b258, http://dx.doi.org/10.1016/j.jacc.2025.09.733

Dahan S; Bach R; Namasivayam M; Tran N; Levine R; Hung J; Dal-Bianco J, 2024, 'Abstract 4147691: Sex-specific Thresholds for Energy Loss Index to Predict Survival in Paradoxical Low Flow Low Gradient Severe Aortic Stenosis', Circulation, 150, http://dx.doi.org/10.1161/circ.150.suppl_1.4147691

Meredith T; Brown L; Mohammed F; Pomeroy A; Roy D; Muller DWM; Hayward C; Feneley M; Namasivayam M, 2024, 'The influence of transcatheter aortic valve replacement on left atrial mechanics: a systematic review and meta-analysis', European Heart Journal - Imaging Methods and Practice, 2, pp. qyae026, http://dx.doi.org/10.1093/ehjimp/qyae026

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, 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, 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, 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, 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

Back to profile page