Dr.S. Harikrishnan Cardiologist in Thiruvananthapuram

Dr.S. Harikrishnan

Cardiologist, Thiruvananthapuram


  • 1 Hospital


  • Visiting Faculty to University of Sydney, Cardiovascular Epidemiology - July 2010
  • Commonwealth Fellow in Interventional Cardiology, Leeds General Infirmary, Leeds. U.K (2005 - 2006)
  • Additional Professor in Cardiology, SCTIMST, 2008
  • Associate professor in Cardiology, SCTIMST, 2008
  • Assistant professor in Cardiology, SCTIMST (2000-2004)
  • Consultant in cardiology, SCTIMST ,1999
  • Resident in Cardiology, SCTIMST (1996 - 1998)


  • Cardiology


  • Ultrasound


  • Heart Disease

    • Rheumatic fever with heart involvement

    • Rheumatic heart disease

    • Kyphoscoliotic heart disease


  • Interventional Cardiology - Coronary Interventions, Intra-vascular, Ultrasound, Rheumatic Heart Disease - Balloon Mitral Valvotomy, Preventive Cardiology - Coronary Artery Disease in the Young


  • Fellowship in Coronary Interventions,Leeds University,U.K(2005-6)
  • DNB (Cardiology) - National Board, Govt. of India, 1999
  • DM (Cardiology) from SCTIMST, 1998
  • MD (Gen. Medicine) from University of Calicut, 1995
  • MBBS from University of Kerala, Medical College, Trivandrum - 1991
  • Conferred Fellowship by the American College of Cardiology (FACC) - 2009
  • Fellowship of the American College of Cardiology, 2009
  • Fellow of the Pulmonary Vascular Research Institute, 2009

Practice Information

Achievements & Contributions

  • Won the best case award in the National Interventional Council meet of Cardiological Society of India - Hyderabad, April 26, 2009
  • Nair, Krishnakumar; Sivadasanpillai, Harikrishnan; Sivasubramonium, P; Ramachandran, Padmakumar; Tharakan, Jaganmohan A; Titus, Thomas; Ajit Kumar, V K; Sivasubramonian, Sivasankaran; Krishnamoorthy,, Percutaneous valvuloplasty for mitral valve restenosis: postballoon valvotomy patients fare better than postsurgical closed valvotomy patients., Catheter Cardiovasc Interv, 2010, 76; 174---80, http://www.ncbi.nlm.nih.gov/pubmed/202324112
  • Sivadasanpillai, Harikrishnan; Valaparambil, Ajithkumar; Sivasubramonian, Sivasankaran; Mahadevan, Kavassery Krishnamoorthy; Sasidharan, Bijulal; Namboodiri, Narayanan; Thomas, Titus; Jaganmohan, Thar, Percutaneous closure of ruptured sinus of Valsalva aneurysms: intermediate term follow-up results., EuroIntervention, 2010, 6; 214---9, http://www.ncbi.nlm.nih.gov/pubmed/205620713
  • Namboodiri, Narayanan; Shajeem, Othayoth; Tharakan, Jaganmohan; Sankarkumar, R; Titus, Thomas; Ajitkumar, Valaparambil; Sivasankaran, Sivasubramonian; Krishnamoorthy, Kavassery Mahadevan; Harikrishnan, Hemodynamic performance evaluation of TTK Chitra heart valve prosthesis in the aortic position using Doppler echocardiography., Int J Cardiol, 2010, 141; 102-5, http://www.ncbi.nlm.nih.gov/pubmed/191103254
  • Namboodiri, Narayanan; Shajeem, Othayoth; Tharakan, Jaganmohan A; Sankarkumar, R; Titus, Thomas; Valaparambil, Ajitkumar; Sivasankaran, Sivasubramonian; Krishnamoorthy, Kavassery Mahadevan; Harikrishn, Doppler echocardiographic assessment of TTK Chitra prosthetic heart valve in the mitral position., Eur J Echocardiogr, 2008, 9; 599-604, http://www.ncbi.nlm.nih.gov/pubmed/182964115
  • Harikrishnan, S; Rajeev, E; Tharakan, Jaganmohan A; Titus, Thomas; Ajit Kumar, V K; Sivasankaran, S; Krishnamoorthy, K M; Nair, Krishnakumar, Efficacy and safety of combination of extended release niacin and atorvastatin in patients with low levels of high density lipoprotein cholesterol., Indian Heart J, 2008, 60; 215-22, http://www.ncbi.nlm.nih.gov/pubmed/192403106
  • Harikrishnan, S; Tharakan, Jaganmohan; Titus, Thomas; Kumar, Ajit; Sivasankaran, S; Krishnamoorthy, K M, Ventricular septal rupture following myocardial infarction: clinical, haemodynamic, angiographic profile and long-term outcome., Int J Cardiol, 2007, 120; 279---80, http://www.ncbi.nlm.nih.gov/pubmed/170699037
  • Harikrishnan, S; Nair, KrishnaKumar; Tharakan, Jaganmohan, Persisting iatrogenic atrial septal defect after transseptal procedures�--what should be done?, Am Heart J, 2007, 153; e9; author reply e11, http://www.ncbi.nlm.nih.gov/pubmed/173074098
  • Harikrishnan, S; Krishnakumar, Nair; Jaganmohan, Tharakan, Coronary Artery Ectasia-Is it Time for Reappraisal?, Clin Cardiol, 2007, 30; 536, http://www.ncbi.nlm.nih.gov/pubmed/179292879
  • Harikrishnan, S; Ajithkumar, V K; Tharakan, J M, Spontaneous coronary artery dissection of all major coronary arteries., Can J Cardiol, 2007, 23; 313---4, http://www.ncbi.nlm.nih.gov/pubmed/1738022610
  • Harikrishnan, S.; Nair, K.; Tharakan, JM; Titus, T.; Kumar, VK; Sivasankaran, S., Percutaneous transmitral commissurotomy in juvenile mitral stenosis-comparison of Inoue balloon technique and metallic commissurotomy, Catheter Cardiovasc Interv, 2006, 67; 453---9, http://onlinelibrary.wiley.com/doi/10.1002/ccd.20666/full
  • Harikrishnan, S; Rajeev, E; Tharakan, Jaganmohan A; Thomas, Titus; Ajith, Kumar; Sivasankaran, S; Krishnamoorthy, K M; Santhosh, Dora; Krishnakumar, Nair; Namboodiri, K K N, Acute phase reactants predict mitral regurgitation following mitral valvuloplasty., Int J Cardiol, 2006, 112; 127---9, http://www.ncbi.nlm.nih.gov/pubmed/1635656212
  • Harikrishnan, S; Rajeev, E; Nair, Krishnakumar; Tharakan, Jaganmohan, Retrieval of friable catheter fragments., Int J Cardiol, 2006, 106; 282---4, http://www.ncbi.nlm.nih.gov/pubmed/1632170913
  • Harikrishnan, S; Nair, Krishnakumar; Tharakan, J M; Titus, T; Kumar, V K Ajith; Sivasankaran, S, Percutaneous transmitral commissurotomy in juvenile mitral stenosis�--comparison of long term results of Inoue balloon technique and metallic commissurotomy., Catheter Cardiovasc Interv, 2006, 67; 453---9, http://www.ncbi.nlm.nih.gov/pubmed/1648955814
  • Harikrishnan, S; Dora, Santhosh Kumar; Tharakan, J M, Brugada syndrome., Int J Cardiol, 2005, 102; 539-41, http://www.ncbi.nlm.nih.gov/pubmed/1600490715
  • Harikrishnan, S; Nair, K; Tharakan, J, Oblique vein of Marshall., Heart, 2005, 91; e16, http://www.ncbi.nlm.nih.gov/pubmed/1565720616
  • Harikrishnan, S; Stigimon, J; Tharakan, J M, Intracranial aneurysms, coronary aneurysms and descending aortic coarctation�--unreported association., Int J Cardiol, 2005, 99; 329---30, http://www.ncbi.nlm.nih.gov/pubmed/1574919617
  • Harikrishnan, S; Narayanan, Namboodiri K K; Sivasubramonian, Sivasankaran, Sizing balloon-induced tear of the atrial septum., J Invasive Cardiol, 2005, 17; 546---7, http://www.ncbi.nlm.nih.gov/pubmed/1620475018
  • Harikrishnan, S; Titus, T; Tharakan, J M, Septal defects after percutaneous mitral valvotomy�--all are not innocent., J Am Soc Echocardiogr, 2005, 18; 183---4, http://www.ncbi.nlm.nih.gov/pubmed/1568205719
  • Varma, Praveen Kerala; Vallath, Gopakumar; Neema, Praveen Kumar; Sinha, Prabhat Kumar; Sivadasanpillai, Harikrishnan; Menon, Madathipat Unnikrishnan; Neelakandhan, Kurur Sankaran, Clinical profile of post-operative ductal aneurysm and usefulness of sternotomy and circulatory arrest for its repair., Eur J Cardiothorac Surg, 2005, 27; 416---9, http://www.ncbi.nlm.nih.gov/pubmed/1574094920
  • Varma, Praveen Kerala; Theodore, Sanjay; Neema, Praveen Kumar; Ramachandran, Padmakumar; Sivadasanpillai, Harikrishnan; Nair, Krishna Kumar; Neelakandhan, Kurur Sankaran, Emergency surgery after percutaneous transmitral commissurotomy: operative versus echocardiographic findings, mechanisms of complications, and outcomes., J Thorac Cardiovasc Surg, 2005, 130; 772---6, http://www.ncbi.nlm.nih.gov/pubmed/1615392721
  • Sivadasanpillai, Harikrishnan; Srinivasan, Anand; Sivasubramoniam, Sivasankaran; Mahadevan, Krishnamoorthy Kavassery; Kumar, Ajith; Titus, Thomas; Tharakan, Jaganmohan, Long-term outcome of patients undergoing balloon mitral valvotomy in pregnancy., Am J Cardiol, 2005, 95; 1504---6, http://www.ncbi.nlm.nih.gov/pubmed/1595058422
  • Sivadasan Pillai, Harikrishnan; Tharakan, Jaganmohan; Titus, Thomas; Kumar, Ajith; Sivasubramonian, Sivasankaran; Krishnamoorthy, Kavassery Mahadevan; Dora, Santhosh; Nair, Krishnakumar; Namboodiri, N, Ventricular septal rupture following myocardial infarction. Long-term survival of patients who did not undergo surgery. Single-centre experience., Acta Cardiol, 2005, 60; 403-7, http://www.ncbi.nlm.nih.gov/pubmed/1612837323
  • Harikrishnan, S; Byju, C K; Tharakan, J, Severe valvar aortic stenosis in a child with familial hypercholesterolaemia., Heart, 2004, 90; 238, http://www.ncbi.nlm.nih.gov/pubmed/1496602724
  • Harikrishnan, S; Titus, Thomas; Tharokan, J M, Pulmonary hypertension manifesting a decade later in a patient with extrahepatic portal hypertension and splenic arterial aneurysms., Int J Cardiol, 2003, 90; 119---21, http://www.ncbi.nlm.nih.gov/pubmed/1282122825
  • Harikrishnan, S; Bhat, Anil; Tharakan, Jaganmohan, Percutaneous balloon mitral valvotomy and coronary stenting in the same sitting., Heart Vessels, 2003, 18; 150---2, http://www.ncbi.nlm.nih.gov/pubmed/1295543126
  • Harikrishnan, S; KrishnaManohar, S R; Krishna Kumar, R; Tharakan, J M, Left atrial myxoma presenting as acute myocardial infarction in a child., Cardiology, 2003, 99; 55---6, http://www.ncbi.nlm.nih.gov/pubmed/1258912427
  • Krishnamoorthy, K Mahadevan; Tharakan, Jaganmohan A; Titus, Thomas; Ajithkumar, V Kumaran; Bhat, Anil; Harikrishnan, Sivadasan Pillai; Padmakumar, Ramachandran, Usefulness of transthoracic echocardiography for identification of left atrial thrombus before balloon mitral valvuloplasty., Am J Cardiol, 2003, 92; 1132---4, http://www.ncbi.nlm.nih.gov/pubmed/1458337528
  • Harikrishnan, S; Manohar, S R Krishna; Nair, Krishna Kumar; Tharakan, Jaganmohan; Titus, Thomas; Kumar, V K Ajith; Bhat, Anil; Sivasankaran, S; Bimal, Francis; Krishna Moorthy, K M; Kumar, R Padma, Supravalvar aortic stenosis: clinical and hemodynamic profile, and surgical outcome., Indian Heart J, 2003, 55; 49-54, http://www.ncbi.nlm.nih.gov/pubmed/1276058829
  • Kannan, Bhava R J; Sivasankaran, S; Tharakan, Jaganmohan A; Titus, Thomas; Ajith Kumar, V K; Francis, Bimal; Krishnamoorthy, K M; Harikrishnan, S; Padmakumar, R; Nair, Krishnakumar, Long-term outcome of patients operated for large ventricular septal defects with increased pulmonary vascular resistance., Indian Heart J, 2003, 55; 161-6, http://www.ncbi.nlm.nih.gov/pubmed/1292133230
  • Bhat, Anil; Harikrishnan, S; Tharakan, J M; Titus, T; Kumar, V K Ajit; Sivasankaran, S; Bimal, Francis; Krishnamoorthy, K M, Comparison of percutaneous transmitral commissurotomy with Inoue balloon technique and metallic commissurotomy: immediate and short-term follow-up results of a randomized study., Am Heart J, 2002, 144; 1074-80, http://www.ncbi.nlm.nih.gov/pubmed/1248643331
  • Harikrishnan, S; Jacob, Sonney P; Tharakan, Jaganmohan; Titus, Thomas; Kumar, V K Ajith; Bhat, Anil; Sivasankaran, S; Bimal, Francis; Moorthy, K M Krishna; Kumar, R Padma, Congenital coronary anomalies of origin and distribution in adults: a coronary arteriographic study., Indian Heart J, 2002, 54; 271-5, http://www.ncbi.nlm.nih.gov/pubmed/1221692232
  • Harikrishnan, S; Sivasankaran, S; Tharakan, Jaganmohan, Double chambered left ventricle., Int J Cardiol, 2002, 82; 59-61, http://www.ncbi.nlm.nih.gov/pubmed/1178615933
  • Harikrishnan, S.; Bhat, A.; Tharakan, JM, Double right coronary artery, International journal of cardiology, 2001, 77; 315---316, http://dx.doi.org/10.1016/S0167-5273(00)00445-934
  • Harikrishnan, S; Krishnamoorthy, K M; Tharakan, J M, Congenital bilateral aplasia of external iliac arteries., Int J Cardiol, 2001, 80; 85---6, http://www.ncbi.nlm.nih.gov/pubmed/1157526735
  • Harikrishnan, S; Bimal, F; Tharakan, J M, Coronary artery fistulae from single coronary artery in a patient with rheumatic mitral stenosis., Int J Cardiol, 2001, 81; 281---3, http://www.ncbi.nlm.nih.gov/pubmed/1174415236
  • Harikrishnan, S; Sunder, K R; Tharakan, J; Titus, T; Bhat, A; Sivasankaran, S; Francis, B, Coronary artery ectasia: angiographic, clinical profile and follow-up., Indian Heart J, 2000, 52; 547---53, http://www.ncbi.nlm.nih.gov/pubmed/1125677737
  • Harikrishnan, S; Tharakan, J; Titus, T; Bhat, A; Sivasankaran, S; Bimal, F; Shyam Sunder, K R, Central pulmonary artery anatomy in right ventricular outflow tract obstructions., Int J Cardiol, 2000, 73; 225-30, http://www.ncbi.nlm.nih.gov/pubmed/1084196338
  • Harikrishnan, S; Sunder, K R; Tharakan, J M; Titus, T; Bhat, A; Sivasankaran, S; Bimal, F, Saccular coronary aneurysms: angiographic and clinical profile and follow-up of 22 cases., Indian Heart J, 2000, 52; 178-82, http://www.ncbi.nlm.nih.gov/pubmed/1089389439
  • Harikrishnan, S; Sunder, K R; Tharakan, J; Titus, T; Bhat, A; Sivasankaran, S; Bimal, F, Clinical and angiographic profile and follow-up of myocardial bridges: a study of 21 cases., Indian Heart J, 1999, 51; 503-7, http://www.ncbi.nlm.nih.gov/pubmed/10721640
  • MNAMS - Member of the National Academy of Medical Sciences - 2000
  • Member of the Cardiological Society of India
  • Member of the Indian College of Cardiology