Dr.S. Harikrishnan

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

Patient Experience

Your participation in the survey will help other patients make informed decisions. You will also be helping Dr.S. Harikrishnan and his staff know how they are doing and how they can improve their services.

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