Total Publications : 157
659 citations h-index 13 i10-index 21 (calculated)
608 citations h-index 13 i10-index 21 (updated from Google Scholar on 12-12-2023)
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Researchgate
An unusual ECG lead reversal. Suresh Kumar Sukumaran and Raja Selvaraj. Indian Pacing and Electrophysiology Journal 2024; :
Case Report Not cited yet
Enhancing the Efficiency and Cost-effectiveness of Magnetocardiography by Optimal Channel Selection for Cardiac Diagnosis. Kesavaraja C, Sengottuvel Senthilnathan, Rajesh Patel, Raja J Selvaraj, Santhosh Satheesh5 and Awadhesh Mani. Biomedical Physics & Engineering Express 2024; :
Original Research Not cited yet
A short RP tachycardia in congenitally corrected transposition. What is the mechanism ?. Anish, Suresh, Sridhar and Raja Selvaraj. Pacing and Cardiac Electrophysiology 2024; :
Case Report Not cited yet
Use of the LAT histogram “trough” to identify the slow conduction channel in complex congenital heart disease macro re-entrant arrhythmias. Nathan Denham, Andrew Ha, Raja Selvaraj, Krishnakumar Nair. CJC Pediatric and Congenital Heart Disease 2024; :
Case Report Not cited yet DOI
Longitudinal Echocardiographic follow up of a Pediatric Multisystem Inflammatory Syndrome cohort. . journal of the Turkish Society of Cardiology 2023; :
Original Research Not cited yet
Pacing mode survival in patients with single chamber atrial pacemaker for sinus node dysfunction. Ramanathan Velayuthan, Suresh Kumar Sukumar, Dinakar Bootla, Sridhar Balaguru, Avinash Anantharaj, Santhosh Satheesh, Raja J. Selvaraj. Indian Heart Journal 2023; :
Original Research Not cited yet DOI Pubmed
View Abstract
Abstract: Background: Single chamber atrial pacemaker should be sufficient for patients with sinus node dysfunction (SND) with normal atrioventricular (AV) conduction. However, most patients undergo dual chamber pacemaker implantation because of concern of new onset AV block. The annual incidence of new AV block has been reported from 0.6 to 4.4 % in various studies. Objectives: Our aim is to assess mode survival in sinus node dysfunction with normal AV conduction patients implanted with AAIR. Methods: Patients who underwent single chamber atrial pacemaker implantation for SND with normal AV conduction between January 2014 and December 2021 were followed up for pacemaker device change, new onset AV block, bundle branch block, atrial fibrillation (AF), lead complications, reoperation and mortality rate. Results: A total of 113 patients underwent single chamber atrial pacemaker implantation for SND during the study period. Mean age was 55.6 ± 12.7 years. During a mean follow up of 48.7 ± 24.9 months, none of the patients required pacemaker device change to VVIR/DDDR. Nine patients underwent reoperation, 5 for lead dislodgment, 1 for high threshold, 1 for pocket site erosion and 3 for pulse generator change. None developed AV block or AF with slow ventricular rate. Only 4 patients developed AF (3 paroxysmal,1 permanent). There were 3 deaths during follow up and none were sudden deaths. Conclusion: Single chamber atrial pacing is an acceptable mode of pacing in patients with SND in developing countries. Development of AV conduction abnormalities is rare in this relatively younger population. Keywords: AAI; AV block; Atrial fibrillation; DDD; Sinus node dysfunction.
Informed consent for coronary angiography: Patients level of understanding and opinion. Puliyakkuth U, Parasar C, Kemprai S, Bhutia SP, Ramamoorthy L, Selvaraj RJ. Journal of Education and Health Promotion 2023; 12: 335
Original Research Not cited yet DOI
COVID-19 Vaccine Hesitancy in Patients with Heart Disease. Selvaraj, Raja J. and Yazhini, K.. International Journal of Advanced Medical and Health Research 2023; 10: 32-36
Original Research Not cited yet DOI
A method for noninvasive beat-by-beat visualization of His bundle signals. S. Sengottuvel and S. Shenbaga~Devi and M. Sasikala and S. Satheesh and R. J. Selvaraj. Annals of Noninvasive Electrocardiology 2023; :
Original Research Not cited yet DOI
Comparison of electrocardiographic parameters between left bundle optimized cardiac resynchronization therapy (LOT-CRT) and left bundle branch pacing—cardiac resynchronization therapy (LBBP-CRT). Chinmay Parale and Dinakar Bootla and Ashish Jain and Santhosh Satheesh and Avinash Anantharaj and A. Shaheer Ahmed and Suresh Kumar Sukumaran and Sridhar Balaguru and Raja Selvaraj. Pacing and Clinical Electrophysiology 2023; :
Original Research Not cited yet DOI
Early dose of Adenosine, postRadiofrequency abLation of accessory pathwaY~in determining acute procedural success (EARLY study). Anand Manickavasagam and Siva Nageswara Rao Guttikonda and Dinakar Bootla and Sirish Chandra Srinath Patloori and Ashish Jain and David Chase and Raja Selvaraj and John R. Jacob. Journal of Cardiovascular Electrophysiology 2023; 34: 607--614
Original Research Not cited yet DOI Pubmed
View Abstract
Abstract: Post ablation of the accessory pathway (AP), the patient is observed in the catheterization laboratory for a variable period for resumption of pathway conduction. Aim of the study was to determine whether the administration of intravenous adenosine at 10 min after ablation of AP would have the same diagnostic accuracy as waiting for 30 min in predicting the resumption of AP conduction.
Audio vs. Video as a Pacifier for Pediatric Echocardiography- A Randomized Controlled Trial. Rishabh Sangwani and Chinmay Parale and Isak Lallawmkima and Ahmed Wayez and Akshay Aggrawal and Karthik Rajan Parasuraman Udayakumar and Nivedita Mondal and Santhosh Satheesh and Raja Selvaraj and Avinash Anantharaj. Indian Journal of Pediatrics 2023; 11: 374-375
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Abstract: NA
Atrioventricular block during exercise treadmill testing - What is the mechanism?. Sakthivel Ramasamy and Vickram Vignesh Rangaswamy and Manoj Sivaramakrishnan and Raja J. Selvaraj. Indian Pacing and Electrophysiology Journal 2023; 23: 56--58
Case Report Not cited yet DOI
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Echocardiographic nomograms and Z-scores for term Indian neonates. Avinash Anantharaj and Vatsal Singh and Santhosh Satheesh and Sachit Ganapathy and Narayana-Pillai Sreekumaran Nair and Nivedita Mondal and Raja Selvaraj and Neeraj Mishra. Annals of Pediatric Cardiology 2023; 16: 11
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Abstract: NA
Short Term Outcomes with Dual Chamber versus Single Chamber Pacing for Atrioventricular Block - A Crossover Trial. Ragavendra Chanthanamuthu and Sakthivel Ramasamy and Ashish Jain and Avinash Anantharaj and Ajith Ananthakrishna Pillai and Santhosh Satheesh and Raja J. Selvaraj. Indian Heart Journal 2022; 23: 56--58
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Abstract: A total of 42 patients were studied for primary outcomes of quality of life and 6MWD between VVIR and DDD modes. At end of 2 months after device implantation, randomization was done and the device was programmed to VVIR or DDD modes. At the end of 2 months in this mode QOL and functional was assessed and the patient was switched to other mode. The same protocol was followed at the end of 2 months. We found no difference in functional capacity and quality of life between the two pacing modes. None of the patients developed pacemaker syndrome and there was no preference for any of the modes.
Wide QRS tachycardia in a young patient. What is the mechanism?. Dinakar Bootla and Ashish Jain and Raja J. Selvaraj. Journal of Cardiovascular Electrophysiology 2022; 33: 754--755
Case Report Cited 1 times DOI Pubmed
Coumel′s sign reversed: What is the mechanism?. Dinakar Bootla and Ashish Jain and Gaurav kumar Mittal and Raja J. Selvaraj. Indian Pacing and Electrophysiology Journal 2022; 22: 115--117
Case Report Not cited yet DOI Pubmed
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Abstract: A patient presented with documented narrow QRS tachycardia. During electrophysiological study, he has orthodromic reciprocating tachycardia with atrial activation consistent with left free wall accessory pathway. With induction of tachycardia, beats with LBBB morphology have shorter cycle length than those with narrow QRS. What is the mechanism?
From the Editor′s desk. Selvaraj, R.. Indian Pacing and Electrophysiology Journal 2022; 22: 1
Editorial Not cited yet
Ventricular overdrive pacing during supraventricular tachycardia. Jain, A. and Bootla, D. and Balaguru, S. and Selvaraj, R.J.. Indian Pacing and Electrophysiology Journal 2022; 74: 327--331
Case Report Not cited yet
Clinical profile and 90 day outcomes of 10 851 heart failure patients across India: National Heart Failure Registry. Sivadasanpillai Harikrishnan, Ajay Bahl, Ambuj Roy, Animesh Mishra, Jayesh Prajapati, CN Manjunath, Rishi Sethi, Santanu Guha, Santhosh Satheesh, RS Dhaliwal, Meenakshi Sarma, Sanjay Ganapathy, Panniyammakal Jeemon, NHFR investigators, Jabir Abdullakutty, Stigi Joseph, Sajan Narayanan, Anwar C Varghese, Ramakrishna Damodara, Johny Joseph, Deepak Davidson, Joby K Thomas, Thomas George, Shafeeq Mattummal, Nitish Naik, Sandeep Singh, Gautam Sharma, Sandeep Seth, Girish Palleda, Mohit D Gupta, Prabhat Kumar, Nirav Kumar, Malani Susheel, Major Vijay Vohra, Prakash C Negi, Sanjeev Asotra, Kunal Mahajan, Rajesh Sharma, Sathwik Raj, Anand Katageri, Veena Nanjappa, Ranjan Shetty, Rockey Katheria, Maneesh Rai, Muhammed Musthafa M, Raja Selvaraj, Vindhya RJ, Durgaprasad Rajasekhar, Vanajakashamma V, K Sreedhar Naik, Justin Paul Gnanaraj, Fazil Hussain, Swaminathan N, Sooraj Menon, Hemanath TR, Anoop George Alex, Sreekanth Yerram, Srinivas Bhyravavajhala, Jyotsna Maddury, Sai Satish Oruganti, Saurabh Mehrotra, Neelam Dahiya, Vibhuti Sharma, Ambika Sood, Bishav Mohan, Rohit Tandon, Col Navreet Singh, Inderjeet Monga, Jeet Ram Kashyap, Sreenivas Reddy, Mukul Kumar, Daljeet Guleria, Anurag Sharma, Roopesh Singhal, Hasit Joshi, Mary Iby, Bhavesh Roy, Parth Thakkar, Dinesh Choudhary, Devendra Kumar Agarwal, Ajay Swamy, Monga IC, Shomu Bohora, Akshayaya Pradhan, Pravesh Vishwakarma, Aditya Kapoor, Sudeep Kumar, Dharmendra Jain, Umesh Pande, Suyash Tripathi, Bhupendra Verma, Soumik Ghosh, Rajpal Prajapati, Krishna Santosh Vemuri, Abhishek Kaushley, Suraj Chaturvedi, Nikhil Jha, Sushil Kumar, Ankit Krishna Agrawal, Narendra Kumar, Sandeep Chowdhary, Smit Shrivastava, BS Yadav, Rajeev Gupta, RK Singh, Gurumeet Singh, Prokash Chandra Bagchi, Tannu Kumari, Mukesh Kumar Agrawal, Manoranjan Mondal, Sankar C Mandal, Kanak Kumar Mitra, SN Routray, Dipak Ranjan Das, Trinath Kumar Mishra, Amit Malviya, Adorelia Laitthma, Rinchin Dorjee, Hem Chandra Kalita, Mriganka Shekhar Chaliha, Dibya Jyothi Dutta, Nisar Ahmad Tramboo, Aamir Rashid, Ravinder Singh Rao, Hemant Chaturvedi, Guruprasad D Naik, Ramnath Nevrekar. ESC Heart Failure 2022; 9: 3898-3908
Original Research Cited 13 times DOI
Para-Hisian pacing: The eyes see what the mind knows. Ashish Jain and Dinakar Bootla and Sridhar Balaguru and Raja J. Selvaraj. Journal of Arrhythmia 2022; 38: 790--792
Case Report Not cited yet DOI
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Abstract: NA
An unusual cause of tachycardia induced cardiomyopathy in an adult. Akinchan Bhardwaj and Ashish Jain and Raja J. Selvaraj. IHJ Cardiovascular Case Reports (CVCR) 2022; 6: 175--177
Case Report Not cited yet DOI
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Outcomes with heart failure management in a multidisciplinary clinic - A randomized controlled trial. Bhagwati Prasad Pant and Santhosh Satheesh and Ajith Ananthakrishna Pillai and Avinash Anantharaj and Lakshmi Ramamoorthy and Raja Selvaraj. Indian Heart Journal 2022; 74: 327--331
Original Research Not cited yet DOI
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Abstract: NA
Ventricular overdrive pacing during supraventricular tachycardia. Jain, A. and Bootla, D. and Balaguru, S. and Selvaraj, R.J.. Indian Pacing and Electrophysiology Journal 2022; :
Case Report Not cited yet
View Abstract
Abstract: NA
Magnetocardiographic source localization for shielded and unshielded setups. Pragyna Swain ... Raja Selvaraj. IETE Journal of Research 2022; : Accepted for Publication
Original Research Not cited yet
Wide complex tachycardia: What is the mechanism?. Ashish Jain and Prashant Gangwar and Raja J. Selvaraj. Journal of Cardiovascular Electrophysiology 2021; 32: 2746--2748
Case Report Cited 3 times DOI Pubmed
Arrhythmia-Induced Cardiomyopathy. Ashish Jain and Raja J. Selvaraj. Indian Journal of Clinical Cardiology 2021; 2: 90--96
Review Cited 3 times DOI Pubmed
View Abstract
Abstract: [This corrects the article DOI: 10.1177/26334895221112153.].
Paradoxical atrial capture during a wide complex tachycardia. Ashish Jain and Sakthivel Ramasamy and Raja J. Selvaraj. Journal of Cardiovascular Electrophysiology 2021; 32: 1202--1204
Case Report Not cited yet DOI Pubmed
Paradoxical correction of bundle branch block—What is the mechanism?. Ashish Jain and Sakthivel Ramasamy and Raja J Selvaraj. Journal of Cardiovascular Electrophysiology 2021; 32: 1199--1201
Case Report Not cited yet DOI Pubmed
Sudden death and its predictors in myocardial infarction survivors in an Indian population. Raja J. Selvaraj and Sasinthar Rangasamy and Dhivya Priya and Sreekumaran Nair and Ajith Ananthakrishna Pillai and Santhosh Satheesh and Balachander Jayaraman. Indian Pacing and Electrophysiology Journal 2021; 21: 82--87
Original Research Cited 6 times DOI Pubmed
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Abstract: This study was conducted to assess the incidence of sudden cardiac death (SCD) in post myocardial infarction patients and to determine the predictive value of various risk markers in identifying cardiac mortality and SCD.
An epoch based methodology to denoise magnetocardiogram (MCG) signals and its application to measurements on subjects with implanted devices. Sengottuvel, S. and Devi, S.S. and Sasikala, M. and Satheesh, S. and Selvaraj, R.J.. Biomedical Physics and Engineering Express 2021; 7: 2746--2748
Original Research Cited 3 times
Consensus statement on cardiac electrophysiology practices during the coronavirus disease 2019 (COVID-19) pandemic: From the Indian Heart Rhythm Society. Namboodiri, N. and Bhargava, K. and Padmanabhan, D. and Selvaraj, R. and Pandurangi, U. and Arora, V. and Chaturvedi, V. and Nabar, A. and Udyavar, A. and Yadave, R.D. and Lokhandwala, Y.. Indian Pacing and Electrophysiology Journal 2021; 21: 281-290
Original Research Cited 1 times
IPEJ - The little journal that dreamt big. Note from the incoming Editor. Selvaraj, R.J.. Indian Pacing and Electrophysiology Journal 2021; 21: 1-2
Editorial Not cited yet
Response to the letter. Selvaraj, R.J.. Indian Pacing and Electrophysiology Journal 2021; 21: 140
Letter to Editor Not cited yet
Solving Inverse Problem in Magnetocardiography by Pattern Search Method. Swain, P.P. and Sengottuvel, S. and Patel, R. and Mani, A. and Selvaraj, R.J. and Satheesh, S.. IETE Journal of Research 2021; 21: 82--87
Original Research Not cited yet
Amiodarone. . Clinical Key Essentials India. Point of Care (Elsevier) 2021; :
Book Chapter Not cited yet
Marriott′s Practical Electrocardiography SAE. Raja J Selvaraj and Raja J Selvaraj. Wolters Kluwer 2021; !: !
Book Not cited yet
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Solving Inverse Problem in Magnetocardiography by Pattern Search Method. Swain, P.P. and Sengottuvel, S. and Patel, R. and Mani, A. and Selvaraj, R.J. and Satheesh, S.. IETE Journal of Research 2021; :
Original Research Not cited yet
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Atrial fibrillation and preexcitation - A licence to kill. R. Sakthivel and Raja J. Selvaraj. Indian Pacing and Electrophysiology Journal 2020; 21: 281-290
Editorial Cited 6 times DOI Pubmed
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Abstract: Atrial fibrillation becomes a potentially lethal arrhythmia in the presence of preexcitation because the rapid ventricular activation can result in ventricular fibrillation. Fortunately, radiofrequency ablation is an effective treatment for these patients. Specific points of interest regarding this association are the mechanism of increased incidence of atrial fibrillation and the current management of patients presenting in atrial fibrillation. These are discussed in this editorial.
Catheter ablation of scar based ventricular tachycardia - Procedural characteristics and outcomes. Yadav, A. and Ramasamy, S. and Theodore, J. and Anantharaj, A. and Pillai, A.A. and Satheesh, S. and Selvaraj, R.J.. Indian Heart Journal 2020; 72: 563-569
Original Research Cited 3 times
Coronary venous anatomy relevant to cardiac resynchronization therapy - An angiographic study. Ramanathan, P. and Agarwal, G. and Selvaraj, R. and Veeramani, R.. European Journal of Anatomy 2020; 24: 357-361
Original Research Not cited yet
Leadless pacemaker implantation in a young patient with recurrent pacing system infection. Joseph Theodore and Hemachandran Munusamy and Ram Shankar and Prakash Hazra and Raja Selvaraj. IHJ Cardiovascular Case Reports (CVCR) 2020; 4: 21--23
Case Report Cited 1 times DOI
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Abstract: NA
Magnetocardiography for identification of coronary ischemia in patients with chest pain and normal resting 12-lead electrocardiogram. Raja Ramesh and Sengottuvel Senthilnathan and Santhosh Satheesh and Pragyna Parimita Swain and Rajesh Patel and Ajith Ananthakrishna Pillai and Gireesan Katholil and Raja J. Selvaraj. Annals of Noninvasive Electrocardiology 2019; 25:
Original Research Cited 3 times DOI Pubmed
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Abstract: Identification of coronary ischemia in patients presenting with chronic chest pain is difficult as resting ECG can be normal. Diagnosis of coronary ischemia requires evaluation during exercise or pharmacological stress. A noninvasive test to identify coronary ischemia at rest without the need for exercise is desirable. We studied the diagnostic accuracy of magnetocardiography (MCG) at rest to detect coronary ischemia in these patients.
Letter regarding “Importance of over-reading ambulatory ECG-based microvolt T-wave alternans to eliminate three main sources of measurement error”. Raja J. Selvaraj. Annals of Noninvasive Electrocardiology 2019; 21: 140
Letter to Editor Not cited yet DOI Pubmed
A paradoxical response to para-hisian pacing. Pramod Pawar and Joseph Theodore and Nagendra Thalor and Raja J. Selvaraj. Pacing and Clinical Electrophysiology 2019; :
Case Report Not cited yet DOI Pubmed
Upper loop re-entrant flutter. Raja Selvaraj and Joseph Theodore. EP Europace 2019; 25:
Case Report Not cited yet DOI Pubmed
An Unusual Form of Preexcitation. Raja Selvara and Pramod Pawar and Devender Sharma and Anandaraja Subramanian. Journal of Cardiovascular Electrophysiology 2019; :
Case Report Not cited yet DOI Pubmed
Hydatid cyst of the interventricular septum – A rare cause of heart block. Bhagwati Pant and Ananthakrishnan Ramesh and Raja Selvaraj. Indian Pacing and Electrophysiology Journal 2019; 4: 21--23
Case Report Cited 4 times DOI Pubmed
Ablation of post-operative atrial flutter in the presence of interrupted IVC. Pramod N. Pawar and Raja J. Selvaraj. Indian Pacing and Electrophysiology Journal 2019; 19: 23--26
Case Report Not cited yet DOI Pubmed
Body surface distribution of T wave alternans is modulated by heart rate and ventricular activation sequence in patients with cardiomyopathy. Ghoraani, B. and Suszko, A.M. and Selvaraj, R.J. and Subramanian, A. and Krishnan, S. and Chauhan, V.S.. PLoS ONE 2019; 14: 357-361
Original Research Cited 3 times
Device detected arrhythmias - Staying afloat in the data deluge. Agarwal, G. and Selvaraj, R.. Indian Pacing and Electrophysiology Journal 2019; 19: 90-91
Editorial Not cited yet
Effects of conscious sedation on tachycardia inducibility and patient comfort during ablation of supraventricular tachycardia: A double blind randomized controlled study. Selvaraj, R.J. and Dukiya, S. and Ananthakrishna Pillai, A. and Satheesh, S. and Balachander, J.. Europace 2019; 21: 142-146
Original Research Cited 3 times
Procedural and follow-up clinical outcomes after chronic total occlusion revascularization: Data from an Indian public hospital. Pillai, A.A. and Ramasamy, S. and Jagadheesan, K.S. and Satheesh, S. and Selvaraj, R.J. and Jayaraman, B.. Indian Heart Journal 2019; 71: 65-73
Original Research Cited 4 times
Implantable Cardioverter Defibrillators in Patients with Nonischemic Dilated Cardiomyopathy. Raja Selvaraj and Balachander Jayaraman. CSI Cardiology Update 2019 2019; :
Book Chapter Not cited yet
Effectiveness of T wave alternans testing for risk stratification of ventricular tachyarrhythmias and sudden death in patients with cardiomyopathy. Behnaz Ghoraani and Adrian M. Suszko and Raja J. Selvaraj and Anandaraja Subramanian and Sridhar Krishnan and Vijay S. Chauhan. Journal of Electrocardiology 2019; 57: S103
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Diagnostic accuracy of apex-pulse deficit for detecting atrial fibrillation. RajaJ Selvaraj and Anjali Rajkumar and Aditya Bhattacharjee. International Journal of Advanced Medical and Health Research 2019; 6: 52
Original Research Cited 5 times DOI
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Radiofrequency ablation of accessory pathways in Ebstein's anomaly. Raja J Selvaraj, Bhupendra Varma, Ajith Ananthakrishna Pillai, Santhosh Satheesh, Jayaraman Balachander. International Journal of Arrhythmia 2018;0(0): 2018; 0:
Original Research Not cited yet
Percutaneous closure of iatrogenic arteriovenous fistula after pacemaker implantation. Praveen Kumar Gupta and Santhosh Satheesh and Raja J Selvaraj. Heart Asia 2018; 10: e011072
Case Report Cited 3 times DOI Pubmed
Wide to narrow complex tachycardia: What is the diagnosis?. Manojkumar Rohit and Darshan Krishnappa and Raja J. Selvaraj. Journal of Cardiovascular Electrophysiology 2018; :
Case Report Cited 1 times DOI Pubmed
Demonstration of dual AV nodal physiology - More than one way to skin~a cat?. Raja J. Selvaraj. Indian Pacing and Electrophysiology Journal 2018; 18: 47--48
Editorial Not cited yet DOI Pubmed
A young female with cyanosis and clubbing. Gupta, P.K. and Selvaraj, R.J.. European Journal of Internal Medicine 2018; 54: e7
Case Report Not cited yet
Consensus statement for implantation and follow-up of cardiac implantable electronic devices in India. Bohora, S. and Vora, A. and Kapoor, A. and Arora, V. and Naik, N. and Selvaraj, R. and Namboodiri, N. and Saxena, A. and Naik, A. and Singh, B. and Narsimhan, C. and Nair, M. and Kler, T.S.. Indian Pacing and Electrophysiology Journal 2018; 18: 188-192
Original Research Cited 1 times
Honeycomb-like appearance on optical coherence tomography in right coronary artery. Gupta, P.K. and Pillai, A.A. and Satheesh, S. and Selvaraj, R. and Balachander, J.. International Journal of Cardiovascular Imaging 2018; 34: 343-344
Case Report Cited 1 times
Long-term outcomes following left main bifurcation stenting in Indian population?Analysis based on SYNTAX I and II scores. Pillai, A.A. and Gousy. V, S. and Kottyath, H. and Satheesh, S. and Selvaraj, R. and Jayaraman, B.. Indian Heart Journal 2018; 70: 394-398
Original Research Cited 8 times
Low power ablation for left coronary cusp ventricular tachycardia?Efficacy and long-term outcome. Jagadheesan, K.S. and Satheesh, S. and Pillai, A.A. and Jayaraman, B. and Selvaraj, R.J.. Indian Heart Journal 2018; 70: S384-S388
Original Research Cited 3 times
Leo Schamroth An Introduction To Electrocardiography 8Ed (Adapted Edition). Raja Selvaraj. 2018; : Edited chapters 1, 2, 3, 4 and 5
Book Chapter Not cited yet
Submitral aneurysm in adults: A rare entity with varied presentations. Baban Kumar and Santhosh Satheesh and Raja Selvaraj. IHJ Cardiovascular Case Reports (CVCR) 2018; 2: 119--122
Case Report Cited 4 times DOI
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Biological Pacemakers – A Review. Velvizhi Gunasekaran and Raja Selvaraj. International Journal of Cardiovascular Practice 2018; 3: 1--5
Review Not cited yet DOI
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Electrocardiogram in Mitral Stenosis. Krishnakumar Nair and Diego Chemello and Raja Selvaraj. Journal of Cardiovascular Electrophysiology 2018; 20: 71--71
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Premature Ventricular Complex: When and How to Ablate?. Raja J Selvaraj and Raja J Selvaraj. CSI Cardiology Update 2018 2018; 5: e5--e6
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Cardiology and Ethics: Mission Impossible?. Raja J Selvaraj and Raja J Selvaraj. CSI Cardiology Update 2018 2018; :
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A deadly mix - rheumatic mitral stenosis, preexcited atrial fibrillation, left atrial appendage thrombus and left atrial appendage accessory pathway. Kabilan S. Jagadheesan and Sasinthar Rangasamy and Raja J. Selvaraj. Indian Pacing and Electrophysiology Journal 2017; 17: 183--185
Case Report Cited 1 times DOI Pubmed
Which side are you on? – Deducing the chamber of origin of atrial tachycardia. Raja J. Selvaraj and Krishna Sarin and Raveendranath Veeramani. Indian Pacing and Electrophysiology Journal 2017; 17: 54--57
Case Report Not cited yet DOI Pubmed
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Abstract: Atrial arrhythmias rising from the regions of the atria that are in close proximity to each other may pose a challenge in identifying the chamber to map and ablate in. In this report, we discuss a patient with left atrial tachycardia which initially mimicked right atrial tachycardia. We discuss the origins of the abnormal electrograms in the right atrium and how this provides a general understanding of the mechanism of double potentials.
Reuse of pacemakers, defibrillators and cardiac resynchronisation devices. Raja J Selvaraj and R Sakthivel and Santhosh Satheesh and Ajith Ananthakrishna Pillai and Pascal Sagnol and Xavier Jouven and Bernard Dodinot and Jayaraman Balachander. Heart Asia 2017; 9: 30.1--33
Original Research Cited 30 times DOI Pubmed
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Abstract: 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 because of concerns regarding outcomes, especially infection. Our objective was to study early outcomes with implants using reused devices and compare them with those with implants using new devices.
Clinical presentation, management, and outcomes in the Indian Heart Rhythm Society-Atrial Fibrillation (IHRS-AF) registry. Vora, A. and Kapoor, A. and Nair, M. and Lokhandwala, Y. and Narsimhan, C. and Ravikishore, A.G. and Dwivedi, S.K. and Namboodiri, N. and Hygriv, R. and Saxena, A. and Nabar, A. and Garg, S. and Bardoloi, N. and Yadav, R. and Nambiar, A. and Pandurangi, U. and Jhala, D. and Naik, A. and Nagmallesh and Rajagopal, S. and Selvaraj, R. and Arora, V. and Thachil, A. and Thomas, J. and Panicker, G.. Indian Heart Journal 2017; 69: 43-47
Original Research Cited 34 times
Infra-His Block during Atrial Pacing?Functional or Pathological?. Selvaraj, R.J. and Kumar, B. and Rangasamy, S.. PACE - Pacing and Clinical Electrophysiology 2017; 40: 69-71
Case Report Not cited yet
Noninvasive Determination of HV Interval Using Magnetocardiography. Senthilnathan, S. and Selvaraj, R.J. and Patel, R. and Satheesh, S. and Katholil, G. and Janawadkar, M.P. and Radhakrishnan, T.S.. PACE - Pacing and Clinical Electrophysiology 2017; 40: 568-577
Original Research Cited 11 times
Coronary Angiography Findings and Its Determinants in Patients Presenting With Acute Coronary Syndrome: A Descriptive Analysis from Asian Population.. Raja J Selvaraj and Chourasiya M and Satheesh S and Selvaraj R and Jayaraman B and Pillai AA. Mymensingh medical journal : MMJ 2017; 8: e1
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Intra vascular ultrasound findings in drug eluting stent restenosis following emergent PCI for acute coronary syndrome – Gender based analysis. Ajith Ananthakrishna Pillai and Saranya Gousy V and Raja J. Selvaraj and Balachander Jayaraman. Journal of Indian College of Cardiology 2017; 7: 78--84
Original Research Cited 2 times DOI
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Change of Heart: Altered Atrial Activation Following an Atrial Extrastimulus. Selvaraj, R. and Satheesh, S. and Balachander, J.. Journal of Cardiovascular Electrophysiology 2016; 27: 618-620
Case Report Not cited yet
Fighting sudden cardiac death in India ? Knowing your enemy is half the battle. Selvaraj, R.. Indian Pacing and Electrophysiology Journal 2016; 16: 120
Editorial Not cited yet
Radiofrequency ablation of posteroseptal accessory pathways associated with coronary sinus diverticula. Selvaraj, R.J. and Sarin, K. and Singh, V.R. and Satheesh, S. and Pillai, A.A. and Kumar, M. and Balachander, J.. Journal of Interventional Cardiac Electrophysiology 2016; 47: 253-259
Original Research Cited 9 times
A young female with recurrent syncope. Mahadeva Swamy B and Deepak Amalnathan and Raja J Selvaraj. Heart Asia 2016; 8: 54--55
Case Report Not cited yet DOI
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Pathophysiology and pharmacology of cardiovascular disease. Raja J. Selvaraj. Journal of Pharmacology and Pharmacotherapeutics 2016; 7: 55--55
Book Review Not cited yet DOI
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Werner Syndrome with Heart Block. Raja J. Selvaraj and Amarnath Upadhyay. The American Journal of Medicine 2015; 128: e33--e34
Case Report Cited 1 times DOI Pubmed
Balloon valvuloplasty in rheumatic aortic valve stenosis: immediate and long-term results. Pillai, A.A. and Ramasamy, C. and Saktheeshwaran, M. and Selvaraj, R. and Satheesh, S. and Jayaraman, B.. Cardiovascular Intervention and Therapeutics 2015; 30: 45-50
Original Research Cited 11 times
Cardiac syndrome X: Clinical characteristics revisited. Ezhumalai, B. and Ananthakrishnapillai, A. and Selvaraj, R.J. and Satheesh, S. and Jayaraman, B.. Indian Heart Journal 2015; 67: 328-331
Original Research Cited 13 times
Complete atrioventricular block in pregnancy: Report of seven pregnancies in a patient without pacemaker. Keepanasseril, A. and Maurya, D.K. and Yavana, S.J. and Selvaraj, R.. BMJ Case Reports 2015; 2015: S384-S388
Case Report Cited 19 times
Diagnostic Dilemma in a Narrow Complex Tachycardia. Selvaraj, R.J. and Raj Singh, V. and Balachander, J.. PACE - Pacing and Clinical Electrophysiology 2015; 38: 887-890
Case Report Not cited yet
Jumping across the gap - A series of atrial extrastimuli. Swamy, M. and Katyal, D. and Selvaraj, R.J.. Indian Pacing and Electrophysiology Journal 2015; 15: 73-75
Case Report Not cited yet
Pace mapping in the atrium using bipolar electrograms from widely spaced electrodes. Selvaraj, R.J. and Yerram, S. and Kumar, P. and Satheesh, S. and Pillai, A.A. and Saktheeswaran, M.K. and Balachander, J.. Journal of Arrhythmia 2015; 31: 274-278
Original Research Cited 2 times
Seckel Syndrome with Severe Sinus Bradycardia. Ramasamy, C. and Satheesh, S. and Selvaraj, R.. Indian Journal of Pediatrics 2015; 82: 292-293
Case Report Cited 8 times
Syncope with heart disease - Provoke and see or wait and watch ?. Selvaraj, R.J.. Indian Pacing and Electrophysiology Journal 2015; 15: 30-31
Editorial Not cited yet
ECG for Beginners. Ananadaraja Subramnaian and Raja Selvaraj. Pacing and Clinical Electrophysiology 2015; 32: 1329--1332
Book Not cited yet DOI
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Abstract: NA
Basics of ECG. Anandaraja Subramanian and Raja Selvaraj. 2015; : 1--1
Book Not cited yet DOI
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Abstract: NA
A curious alliance: Sinus nodal dysfunction precipitating atrioventricular block. Yerram, S. and Ramasamy, C. and Balachander, J. and Selvaraj, R.J.. Journal of Arrhythmia 2014; 30: 208-210
Case Report Not cited yet
Balloon pulmonary valvuloplasty in adults: immediate and long-term outcomes. Ananthakrishna, A. and Balasubramonium, V.R. and Thazhath, H.K. and Saktheeshwaran, M. and Selvaraj, R. and Satheesh, S. and Jayaraman, B.. The Journal of heart valve disease 2014; 23: 511-515
Original Research Cited 11 times
Chasing red herrings: Making sense of the colors while mapping. Selvaraj, R.J. and Shankar, B. and Subramanian, A. and Nair, K.. Circulation: Arrhythmia and Electrophysiology 2014; 7: 553-556
Case Report Cited 5 times
Coronary sinus diameter by echocardiography to differentiate atrioventricular nodal reentrant tachycardia from atrioventricular reentrant tachycardia. Ezhumalai, B. and Satheesh, S. and Anantha, A. and Pakkirisamy, G. and Balachander, J. and Selvaraj, R.J.. Cardiology Journal 2014; 21: 273-278
Original Research Cited 13 times
Heart failure and pulsus alternans an unusual presentation of first-degree heart block. Kandaswamy, P.K. and Anantha, A. and Balachander, J. and Selvaraj, R.J.. Circulation: Heart Failure 2014; 7: 227-228
Case Report Cited 3 times
Parasystole in a mahaim accessory pathway. Ramasamy, C. and Kumar, S. and Selvaraj, R.J.. Indian Pacing and Electrophysiology Journal 2014; 14: 223-226
Case Report Cited 1 times
Peritricuspid reentrant ventricular tachycardia in Ebstein′s anomaly. Kumar, S. and Subramanian, A. and Selvaraj, R.J.. Europace 2014; 16: 1633
Case Report Cited 3 times
Submitral aneurysm: A rare cause of ventricular tachycardia. Kumar, P. and Balachander, J. and Selvaraj, R.J.. Heart Asia 2014; 4: 112-113
Case Report Cited 4 times
Techniques and outcomes of transcatheter closure of complex atrial septal defects-Single center experience. Pillai, A.A. and Satheesh, S. and Pakkirisamy, G. and Selvaraj, R. and Jayaraman, B.. Indian Heart Journal 2014; 66: 38-44
Original Research Cited 24 times
Wide complex tachycardia: What is the mechanism?. Ramasamy, C. and Kumar, S. and Balachander, J. and Selvaraj, R.J.. Journal of Cardiovascular Electrophysiology 2014; 25: 220-221
Case Report Cited 1 times
Utility of balloon assisted technique in trans catheter closure of very large (≥35 mm) atrial septal defects.. Raja J Selvaraj and Pillai AA and Rangaswamy Balasubramanian V and Selvaraj R and Saktheeswaran M and Satheesh S and Jayaraman B. Cardiovascular diagnosis and therapy 2014; 7: 852--855
Original Research Cited 18 times DOI
View Abstract
Abstract: NA
Pseudo PJRT - Fast-slow av nodal reentrant tachycardia presenting with tachycardia-induced cardiomyopathy. Selvaraj, R. and Ananthakrishnapillai, A. and Sadasivam, R. and Balachander, J.. PACE - Pacing and Clinical Electrophysiology 2013; 36: 45-50
Case Report Cited 15 times
Anomalous left anterior descending artery from pulmonary artery: An extremely rare coronary anomaly. George, K.G. and Gobu, P. and Selvaraj, R. and Balachander, J.. Indian Heart Journal 2013; 65: 88-90
Case Report Cited 1 times
Premature ventricular complexes and left atrial appendage dysfunction - Another head on a many-headed hydra?. Selvaraj, R.J.. Indian Pacing and Electrophysiology Journal 2013; 13: 134-135
Editorial Cited 3 times
Sequential anterograde and retrograde conduction block during radiofrequency ablation of an accessory pathway. Ramasamy, C. and Ramteke, R. and Balachander, J. and Selvaraj, R.J.. Indian Pacing and Electrophysiology Journal 2013; 13: 148-150
Case Report Not cited yet
Transient bradycardia induced by thiopentone sodium: A unique challenge in the management of refractory status epilepticus. Sharma, S. and Nair, P.P. and Murgai, A. and Selvaraj, R.J.. BMJ Case Reports 2013; 38: 887-890
Case Report Cited 2 times
An unusual response to para-Hisian pacing: What is the explanation?. Raja J. Selvaraj and Sreekanth Yerram and Chandramohan Ramasamy and Jayaraman Balachander. Heart Rhythm 2013; 10: 1586--1588
Case Report Cited 2 times DOI Pubmed
Transient bradycardia induced by thiopentone sodium: A unique challenge in the management of refractory status epilepticus. Sharma, S. and Nair, P.P. and Murgai, A. and Selvaraj, R.J.. BMJ Case Reports 2013; :
Case Report Not cited yet
View Abstract
Abstract: NA
"Pseudo PJRT" - Fast-slow av nodal reentrant tachycardia presenting with tachycardia-induced cardiomyopathy. Selvaraj, R. and Ananthakrishnapillai, A. and Sadasivam, R. and Balachander, J.. PACE - Pacing and Clinical Electrophysiology 2013; 36:
Case Report Cited 15 times
View Abstract
Abstract: NA
Ablation of atrioventricular nodal reentrant tachycardia using the superior approach in a patient with IVC interruption. Vidhyakar, B. and Sadasivam, R. and Balachander, J. and Selvaraj, R.J.. Journal of Cardiovascular Electrophysiology 2012; 23: 1393-1394
Case Report Cited 1 times
Latent microvolt T-wave alternans in survivors of unexplained cardiac arrest unmasked by epinephrine challenge. Spears, D.A. and Suszko, A.M. and Krahn, A.D. and Selvaraj, R.J. and Ivanov, J. and Chauhan, V.S.. Heart Rhythm 2012; 9: 1076-1082
Original Research Cited 4 times
Pseudodisappearance of atrial electrogram during accessory pathway ablation. Selvaraj, R. and Santhosh, S. and Balachander, J.. Europace 2012; 14: 993
Case Report Not cited yet
Ventricular tachycardia in repaired double chambered right ventricle - identification of the substrate and successful ablation. Selvaraj, R.J. and Gobu, P. and Ashida, T.S. and George, G. and Balachander, J.. Indian Pacing and Electrophysiology Journal 2012; 12: 27-31
Case Report Cited 7 times
Ablation of ventricular tachycardia arising from the left coronary cusp. Selvaraj, R.J. and Santhosh, S. and Balachander, J.. Heart 2011; 97: 1720
Case Report Not cited yet
Anodal stimulation-the intrigue continues. Selvaraj, R. and Nair, K.. Indian Pacing and Electrophysiology Journal 2011; 11: 61-63
Editorial Cited 3 times
Effects of cleistanthins A and B on blood pressure and electrocardiogram in Wistar rats. Parasuraman, S. and Raveendran, R. and Selvaraj, R.J.. Zeitschrift fur Naturforschung - Section C Journal of Biosciences 2011; 66: 581-587
Original Research Cited 14 times
Microscopic systolic pressure alternans in human cardiomyopathy: Noninvasive evaluation of a novel risk marker and correlation with microvolt T-wave alternans. Selvaraj, R.J. and Suszko, A. and Subramanian, A. and Mak, S. and Wainstein, R. and Chauhan, V.S.. Heart Rhythm 2011; 8: 236-243
Original Research Cited 13 times
Modulated dispersion of activation and repolarization by premature beats in patients with cardiomyopathy at risk of sudden death. Subramanian, A. and Suszko, A. and Selvaraj, R.J. and Nanthakumar, K. and Ivanov, J. and Chauhan, V.S.. American Journal of Physiology - Heart and Circulatory Physiology 2011; 300: 553-556
Original Research Cited 6 times
Multiple inappropriate rate drop responses triggered by ventricular premature beats. Babu, E. and George, G. and Balachander, J. and Selvaraj, R.. Europace 2011; 13: 1046
Case Report Cited 2 times
T wave alternans evaluation using adaptive time-frequency signal analysis and non-negative matrix factorization. Ghoraani, B. and Krishnan, S. and Selvaraj, R.J. and Chauhan, V.S.. Medical Engineering and Physics 2011; 33: 700-711
Original Research Cited 27 times
T-wave alternans monitoring in patients with acute coronary syndromeletter to the editor. Selvaraj, R.. Europace 2011; 13: 907
Letter to Editor Not cited yet
Termination of a Broad Complex Tachycardia by a Premature Atrial Complex. RAJA SELVARAJ and PALAMALAI ARUNPRASATH and EZHUMALAI BABU and JAYARAMAN BALACHANDER. Journal of Cardiovascular Electrophysiology 2011; 22: 100--100
Case Report Not cited yet DOI Pubmed
To the Editor—Atrioventricular nodal reentrant tachycardia termination with two consecutive P waves. Raja J. Selvaraj and Krishnakumar Nair. Heart Rhythm 2011; 8: e1
Letter to Editor Not cited yet DOI Pubmed
To the Editor—His Capture and Entrainment. Krishnakumar Nair and Raja Selvaraj and Kah Len Ho and Kumaraswamy Nanthakumar. Heart Rhythm 2011; 8: e2
Letter to Editor Cited 2 times DOI Pubmed
To the Editor—ICD Implantation Early After Myocardial Infarction. Raja Selvaraj and Krishnakumar Nair. Heart Rhythm 2011; 8: e1
Letter to Editor Not cited yet DOI Pubmed
A tale of four atrioventricular intervals. Subramanian, A. and Selvaraj, R.J. and Cameron, D.. Europace 2010; 12: 441-442
Case Report Cited 4 times
Does apd gradient indicate dispersion of repolarization?. Selvaraj, R.J. and Nair, K.. Circulation Research 2010; 107: 112-113
Letter to Editor Not cited yet
Prevention of postoperative atrial fibrillation - A stitch in time. Selvaraj, R.. Indian Pacing and Electrophysiology Journal 2010; 10: 526-528
Editorial Cited 3 times
Uncommon presentation of a common tachycardia. Selvaraj, R. and Arunprasath, P. and Karthikeyan, B. and George, G. and Balachander, J.. Indian Pacing and Electrophysiology Journal 2010; 10: 426-428
Case Report Cited 8 times
A single atrial extrastimulus during a short RP tachycardia. Raja Selvaraj and Krishnakumar Nair and Anandaraja Subramanian and Kumaraswamy Nanthakumar. Heart Rhythm 2010; 7: 997--998
Case Report Cited 1 times DOI Pubmed
Antidromic His Capture during Entrainment of Orthodromic AVRT. KRISHNAKUMAR NAIR and RAJA SELVARAJ and TALHA FARID and KUMARASWAMY NANTHAKUMAR. Pacing and Clinical Electrophysiology 2010; 33: 1153--1156
Case Report Cited 4 times DOI Pubmed
View Abstract
Abstract: A narrow QRS tachycardia with eccentric atrial activation is presented with features favoring an orthodromic atrioventricular re-entrant tachycardia including an extranodal paraHisian response, and a short corrected post-pacing interval to tachycardia cycle length difference following right ventricular entrainment. However, during entrainment, the H-H interval was entrained by the pacing train several beats prior to the A-A interval which would suggest an atrioventricular nodal re-entry tachycardia. We discuss the diagnosis and its mechanism.
Letter Regarding “Assessment of Physiological Amplitude, Duration and Magnitude of ECG T-Wave Alternans”. Raja J. Selvaraj. Annals of Noninvasive Electrocardiology 2010; 15: 184--184
Letter to Editor Not cited yet DOI Pubmed
“Locked-in” sensitivity in the managed ventricular pacing mode. Krishnakumar Nair and Raja Selvaraj and Sheila Watkins and Douglas Cameron. Heart Rhythm 2010; 7: 852--855
Case Report Cited 3 times DOI Pubmed
View Abstract
Abstract: Two cases of "locked-in" sensitivity in the managed ventricular pacing mode are reported. Patient A was a 22-year-old man with a history of hypertrophic obstructive cardiomyopathy and a prophylactic dual-chamber automatic implantable cardioverter-defibrillator who manifested paradoxic T-wave oversensing on the ventricular lead at a sensitivity setting of 1.2 mV but not earlier when the sensitivity had been set to 0.9 mV. Patient B was a 74-year-old patient with ischemic cardiomyopathy and a dual-chamber defibrillator who presented with persistent paradoxic undersensing of the P wave on the atrial lead even at the maximal sensitivity of 0.15 mV, although P-wave sensing was normal earlier when sensitivity was set to 0.3 mV. The phenomenon and the mechanism for its behavior are described.
Adaptive time-frequency matrix features for T wave alternans analysis. Ghoraani, B. and Krishnan, S. and Selvaraj, R.J. and Chauhan, V.S.. Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009 2009; 36: 39-42
Original Research Cited 4 times
Adrenergic stimulation increases repolarization dispersion and reduces activation-repolarization coupling along the RV endocardium of patients with cardiomyopathy. Selvaraj, R.J. and Suszko, A.M. and Subramanian, A. and Nanthakumar, K. and Chauhan, V.S.. Europace 2009; 11: 1529-1535
Original Research Cited 11 times
Body surface projection of action potential duration alternans: A combined clinical-modeling study with implications for improving T-wave alternans detection. Selvaraj, R.J. and Suszko, A.M. and Subramanian, A. and Sivananthan, D. and Hill, A. and Nanthakumar, K. and Chauhan, V.S.. Heart Rhythm 2009; 6: 1211-1219
Original Research Cited 21 times
Defibrillator shock due to ventricular trigeminy. Nair, K. and Selvaraj, R. and Chauhan, V.S.. Europace 2009; 11: 374-375
Case Report Cited 4 times
Apparent Ventricular Lead Malfunction-What is the Mechanism?. Krishnakumar Nair And Raja Selvaraj And Vijay S. Chauhan. Journal of Cardiovascular Electrophysiology 2009; 20: 110--112
Case Report Not cited yet DOI Pubmed
Effect of Noise on T-Wave Alternans Measurement in Ambulatory ECGs Using Modified Moving Average versus Spectral Method. Raja J. Selvaraj And Vijay S. Chauhan. Pacing and Clinical Electrophysiology 2009; 32: 632--641
Original Research Not cited yet DOI Pubmed
View Abstract
Abstract: The modified moving average (MMA) and spectral method (SM) are commonly used to measure T-wave alternans (TWA), but their accuracy has not been compared in ambulatory electrocardiograms (ECGs) where TWA signal-to-noise ratio is low. Our objective was to compare the effect of noise and signal nonstationarity on the accuracy of TWA measurement using MMA versus SM when applied to synthetic and ambulatory ECGs.
The Dangling Electrogram: Discerning Spatial from Electrophysiological Distance. RAJA SELVARAJ and KRISHNAKUMAR NAIR and ANANDARAJA SUBRAMANIAN and KUMARASWAMY NANTHAKUMAR. Journal of Cardiovascular Electrophysiology 2009; 20: 1176--1178
Case Report Cited 2 times DOI Pubmed
To the Editor—Response—T wave alterans. Raja J. Selvaraj and Vijay S. Chauhan. Heart Rhythm 2009; 6: e1--e2
Letter to Editor Not cited yet DOI Pubmed
View Abstract
Abstract: [This corrects the article DOI: 10.1016/j.asmr.2020.03.001.].
Wide Complex Tachycardia with RR and QRS Alternans: What Is the Mechanism?. ANANDARAJA SUBRAMANIAN and RAJA J. SELVARAJ and KRISHNAKUMAR NAIR and KUMARASWAMY NANTHAKUMAR. Pacing and Clinical Electrophysiology 2009; 32: 1329--1332
Case Report Cited 2 times DOI Pubmed
Short-Term Memory and Restitution During Ventricular Fibrillation in Human Hearts. Satish C. Toal and Talha A. Farid and Raja Selvaraj and Vijay S. Chauhan and Stephane Masse and Joan Ivanov and Louise Harris and Eugene Downar and Michael R. Franz and Kumaraswamy Nanthakumar. Circulation: Arrhythmia and Electrophysiology 2009; 2: 562--570
Original Research Not cited yet DOI
View Abstract
Abstract: Background— Action potential duration (APD) variation is an important determinant of wave break and reentry. The determinants of APD variability during early ventricular fibrillation (VF) in myopathic human hearts have not been studied. The objective of this study was to study the role of APD restitution and short-term cardiac memory on variation in human VF. Methods and Results— The study consisted of 7 patients (67�9 years old) with ejection fraction <35%. Monophasic action potentials were recorded from the right and/or left ventricular septum during VF. APD 60/90 was measured in sinus beat preceding induction of VF, and its amplitude was used to define 60%/90% repolarization in VF. The monophasic action potential upstroke (dV/dt max ) was used to characterize local excitability. Simple linear regression showed that variability in APD n60 was determined by APD/diastolic interval restitution ( R 2 =0.48, P <0.0001) and short-term memory (APD 60 n−1, n−2, n−3, n−4; R 2 =0.55, 0.40, 0.33, and 0.27 respectively; P <0.001). Using multiple stepwise regression, short-term memory and restitution accounted for 62% of variance in APD 60 ( P <0.001). Individually, memory effect had the greatest contribution to APD variability ( R 2 =0.55, P <0.0001). Conclusions— In early human VF, short-term memory and APD/diastolic interval restitution explain most of the APD variability, with memory effects predominating. This suggests that in early human VF, short-term cardiac memory may provide a novel therapeutic target to modulate progression of VF in myopathic patients.
Adaptive time-frequency signal analysis and its case study in biomedical ecg waveform analysis. Ghoraani, B. and Krishnan, S. and Selvaraj, R.J. and Chauhan, V.D.. DSP 2009: 16th International Conference on Digital Signal Processing, Proceedings 2009; :
Original Research Not cited yet
View Abstract
Abstract: NA
Atrial Tracking with a Single ICD Lead in the Ventricle. Danna Spears And Raja Selvaraj And Rajesh Dhopeswarkar And Kumaraswamy Nanthakumar. Journal of Cardiovascular Electrophysiology 2008; 19:
Case Report Cited 1 times DOI Pubmed
Human Ventricular Action Potential Duration Restitution. Raja J. Selvaraj and Vijay S. Chauhan. Journal of the American College of Cardiology 2008; 51: 1721--1722
Original Research Cited 5 times DOI Pubmed
To the Editor. Raja J. Selvaraj and Vijay S. Chauhan. Heart Rhythm 2008; 5: e5--e6
Letter to Editor Not cited yet DOI Pubmed
Endocardial and Epicardial Repolarization Alternans in Human Cardiomyopathy. Evidence for Spatiotemporal Heterogeneity and Correlation With Body Surface T-Wave Alternans. Selvaraj, R.J. and Picton, P. and Nanthakumar, K. and Mak, S. and Chauhan, V.S.. Journal of the American College of Cardiology 2007; 49: 338-346
Original Research Cited 96 times
Letter by Selvaraj and Chauhan regarding article, "upsurge in T-wave alternans and nonalternating repolarization instability precedes spontaneous initiation of ventricular tachyarrhythmias in humans" [1]. Selvaraj, R.J. and Chauhan, V.S.. Circulation 2007; 115: 1076-1082
Letter to Editor Not cited yet
Steeper restitution slopes across right ventricular endocardium in patients with cardiomyopathy at high risk of ventricular arrhythmias. Selvaraj, R.J. and Picton, P. and Nanthakumar, K. and Chauhan, V.S.. American Journal of Physiology - Heart and Circulatory Physiology 2007; 292: 993
Original Research Cited 56 times
Utility of microvolt T-wave alternans to predict sudden cardiac death in patients with cardiomyopathy. Vijay S Chauhan and Raja J Selvaraj. Current Opinion in Cardiology 2007; 22: 25--32
Review Cited 10 times DOI Pubmed
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Abstract: Sudden cardiac death remains a major cause of mortality among patients with cardiomyopathy and implantable cardioverter-defibrillator therapy has been shown to improve survival in these patients. Effective use of prophylactic implantable cardioverter-defibrillator therapy requires accurate risk stratification beyond assessment of ejection fraction, however. Repolarization alternans is a harbinger of ventricular arrhythmias and its measurement from body-surface recordings, also known as microvolt T-wave alternans, is emerging as an effective prognostic tool in these patients based on recent clinical trials.
Congenital Long QT Syndrome presenting as epilepsy.. Raja Jai Sundar S, Parvathy C S, Joy M Thomas and Sundarsana G.. Indian Pediatrics 2003; 40: 1201- 1203
Not cited yet Pubmed
View Abstract
Abstract: Epilepsy can sometimes be mimicked in children by other organic conditions. We present a 11 year old boy with the congenital long QT syndrome who had recurrent 'seizures' for five years which had been treated as epilepsy.