User profiles for "author:Raja J Selvaraj"

Raja J Selvaraj

Professor of Cardiology, JIPMER
Verified email at jipmer.edu.in
Cited by 740

Endocardial and epicardial repolarization alternans in human cardiomyopathy: evidence for spatiotemporal heterogeneity and correlation with body surface T-wave …

RJ Selvaraj, P Picton, K Nanthakumar, S Mak… - Journal of the American …, 2007 - jacc.org
Objectives: The aim of this study was to define the spatiotemporal distribution of intracardiac
alternans and its relationship to body surface alternans in humans. Background: Spatial …

Steeper restitution slopes across right ventricular endocardium in patients with cardiomyopathy at high risk of ventricular arrhythmias

RJ Selvaraj, P Picton… - American Journal of …, 2007 - journals.physiology.org
Steep action potential duration (APD) restitution slopes (> 1) and spatial APD restitution
heterogeneity provide the substrate for ventricular fibrillation in computational models and …

Reuse of pacemakers, defibrillators and cardiac resynchronisation devices

RJ Selvaraj, R Sakthivel, S Satheesh, AA Pillai… - Heart …, 2017 - heartasia.bmj.com
Objective Access to pacemakers remains poor among many patients in low/middle-income
countries. Reuse of explanted pacemakers is a possible solution, but is still not widespread …

T wave alternans evaluation using adaptive time–frequency signal analysis and non-negative matrix factorization

B Ghoraani, S Krishnan, RJ Selvaraj… - Medical engineering & …, 2011 - Elsevier
Each year 400,000 North Americans die from sudden cardiac death (SCD). Identifying those
patients at risk of SCD remains a formidable challenge. T wave alternans (TWA) evaluation …

Utility of microvolt T-wave alternans to predict sudden cardiac death in patients with cardiomyopathy

VS Chauhan, RJ Selvaraj - Current opinion in cardiology, 2007 - journals.lww.com
Utility of microvolt T-wave alternans to predict sudden card... : Current Opinion in Cardiology
Utility of microvolt T-wave alternans to predict sudden cardiac death in patients with …

Body surface projection of action potential duration alternans: A combined clinical–modeling study with implications for improving T-wave alternans detection

RJ Selvaraj, AM Suszko, A Subramanian… - Heart Rhythm, 2009 - Elsevier
BACKGROUND: Action potential duration alternans (APDA) can vary regionally in
magnitude and phase. The influence of APDA heterogeneity on T-wave alternans (TWA) has …

[HTML][HTML] Cardiac syndrome X: Clinical characteristics revisited

B Ezhumalai, A Ananthakrishnapillai, RJ Selvaraj… - Indian heart …, 2015 - Elsevier
Background Cardiac syndrome X includes a heterogenous group of patients with angina but
normal epicardial coronaries in angiography. Objective Our objective was to study the …

Noninvasive determination of HV interval using magnetocardiography

S Senthilnathan, RJ Selvaraj, R Patel… - Pacing and Clinical …, 2017 - Wiley Online Library
Background The His‐ventricular (HV) interval is an important index of atrioventricular
conduction, but at present can be reliably measured only during an invasive …

Coronary sinus diameter by echocardiography to differentiate atrioventricular nodal reentrant tachycardia from atrioventricular reentrant tachycardia

B Ezhumalai, S Satheesh, A Anantha… - Cardiology …, 2014 - journals.viamedica.pl
Background: Coronary sinus (CS) has been shown to be larger in patients with
atrioventricular nodal reentrant tachycardia (AVNRT). We sought to determine if …

Effects of cleistanthins A and B on blood pressure and electrocardiogram in Wistar rats

S Parasuraman, R Raveendran… - … für Naturforschung C, 2011 - degruyter.com
We have studied the effects of cleistanthin A and cleistanthin B, phytoconstituents isolated
from the leaves of Cleistanthus collinus Roxb.(Euphorbiaceae), on blood pressure …