Cardiology Department

FacultyServices Projects PublicationsResearch Staff

Divisions
Faculty
Facilities
Catheterization Lab

1). Philips Integris H 5000 F
Philips  Integris  H 5000 F
Installed On 01-01-2001

a). Floor mounted C-arm
b). Image Intensifier
c). XIMS hemodynamic system

2). Siemens Axiom Artis
Siemens Axiom Artis

a). Flat Panel detector
b). Floor mounted C-arm
c). Compact and slim line C-arm design
d). Dynavision - Rotational angio feasibility
e). DSA
f). Table tilt possibility
g). Axiom Sensis hemodynamic system
h). Conciderable radiation reduction with CARE
i). SYNGO IC3D - Fast and accurate method for lesion analysis using a 3D morphological model of coronary vessel
j). Excellent image quality through CLEAR technology

3). Philips Allura Xper
Philips Allura Xper
Installed On 15-07-2010

a). Allura Xper Flat Panel Detector 10
b). Celing mounted C-arm
c). Xtravision hardware with Stentboost
d). XIMS hemodynamic System
e). DSA limited frame rate
f). 184 micropixel for higher resolution and superb image quality
g). Low dose Fluroscopy

Electrophysiology System

1). Bard EP System Pro
Bard EP System Pro
Installed On 27-05-1996

a). PRO EP_ recording system
b). Patient Review mode provides significant improvements to workflow
c). CLEARSIGN Amplifier provides excellent signal quality with unique noise filtering and up to 160 intracardiac channels
d). Patient Data archiving

2). Bard EP System PRO 2
Installed On 22-04-2009

3). Ensite Mapping System
Ensite Mapping System
Installed On 30-12-2006

Model EE 3000: Ensite Version 6

The Ensite System is an advanced mapping and catheter navigation system, capable of displaying cardiac electrical activity is waveform traces and as dynamic three-dimensional iso potential maps of the cardiac chamber. The contoured geometry of the three dimensional maps is based on the patients own cardiac chamber .Using the 3D map. the Ensite navigation system displays the three dimensional position of conventional electrophysiological catheter.

When Ensite System is used in conjunction with ensite Array, the System can collect, store and display over 3000 intracardiac electrogram without the need to manipulate the conventional EP catheters in cardiac chamber

Ensite Array Non Contact Mapping
Ensite Array Non Contact Mapping
IVUS

Intravascular Ultrasound (IVUS) is a catheter based system that allows physicians to acquire images of diseased vessels from inside the artery.IVUS utilizes acoustic impedence of vascular structures to provide cross sectional image from inside vessel . The IVUS catheter uses a transducer near the distal tip to emit and receive high frequency ultrasound IVUS provides detailed and accurate measurements of lumen and vessel size, plaque area and volume, and the location of key anatomical landmarks. Volcano's proprietary VH® IVUS technology helps differentiate the four plaque types: fibrous, fibro-fatty, necrotic core and dense calcium

Volcano s5
Volcano s5
Pressure wire

Measures intravascular blood pressure and blood flow velocity in all blood vessels, including the coronary and peripheral arteries during diagnostic and interventional procedures.

Volcano Combomap: System Model 6800
Volcano Combomap: System Model 6800
Rotablator

The Rotablator -Rotational Angioplasty system is a catheter based device utilizing a diamond coated elliptical burr at the tip of flexible drive shaft. Tracking co-axially over a guide wire and rotating at up to 190000 rpm the burr ablates calcific plaques into fine particles that are disposed by body's reticuloendothelial system.

Boston Scientific
Boston Scientific
IABP

a) Intelli-sense combines fiber-optic speed with automatic in vivo calibration. The result is faster time to therapy, faster signal acquisition and faster adaptation to rate and rhythm changes.
b) Automated evaluation of best lead and trigger source
c) Has one button start up

Datascope CS 300
Datascope CS 300
Publications
Publications 2016-2017
  1. Abhilash SP, Namboodiri N. Management of acute AF. JAPI 2016, Special issue;64:21-26.
  2. Bijulal S, Sasikumar D, Rashid A. Unexpected complication of uncovered aortic end in ductal stenting. Cardiol Young. 2017. doi: 10.1017/ S1047951116002535
  3. Choudhary D, Chaurasia AK, Kumar SM, Arulkumar A, Thajudeen A, Namboodiri N, Sanjay G, Abhilash SP, Ajitkumar VK, Ja T. Radial left ventricular dyssynchrony by speckle tracking in apical versus non apical right ventricular pacingevidence of dyssynchrony on medium term follow up. J Cardiovasc Thorac Res. 2016;8:20-5
  4. Das JM, Krishnakumar K, Nair S. Dystopic osodontoideum: A rare cause of atlantoaxial instability. J Spinal Surg 2017;4:38-39.
  5. George R, Bhatt A, Narayani J, Thulaseedharan JV, Sivadasanpillai H, Tharakan JA. Enhanced P-selectin expression on platelet-a marker of platelet activation, in young patients with angiographically proven coronary artery disease. Mol Cell Biochem. 2016;419:25–133.
  6. George R, Harikrishnan S, Jayakumari N, Bhatt A, Thulaseedharan JV, Tharakan JA. Circulating thrombotic risk factors in young patients with coronary artery disease who are on statins and anti-platelet drugs. Indian Indian J Clin Biochem. 2016;31:302-9.
  7. Gopalakrishnan A, Ganapathi S, Sivasubramonian S, Sivadasanpillai H. Partial papillary muscle rupture following percutaneous mitral valvuloplasty without mitral regurgitation. J Echocardiogr. 2016;14:81-2
  8. Gopalakrishnan A, Harikrishnan S, Krishnamoorthy KM, Kapilamoorthy TR, Valaparambil A, Tharakan J. Aorto-right ventricular outflow tract fistula after Bentall repair. Acta Cardiologica. 2017. doi: 10.1080/00015385.2017.1304722.
  9. Gopalakrishnan A, Nair KK, Harikrishnan S, Valaparambil A. An unusual case of persistent severe pulmonary artery hypertension following balloon mitral valvuloplasty. J Heart Valve Dis. 2016;25:195-197.
  10. Gopalakrishnan A, Sanjay G, Nair KK, Harikrishnan S, Valaparambil A. Deleterious effects of isolated right ventricular pacing in right ventricular myocardial infarction. Int J Cardiol. 2016;222:995- 6.
  11. Gopalakrishnan A, Sasidharan B, Krishnamoorthy KM, Sivasubramonian S, Dharan BS, Mathew T, Titus T, Valaparambil A, Tharakan J. Left ventricular regression after balloon atrial septostomy in d-transposition of the great arteries. Eur J Cardiothorac Surg. 2016;50:1096-1101.
  12. Gopalakrishnan A, Sivasubramonian S, Kapilamoorthy TR, Valaparambil A. Massive left main coronary aneurysm presenting as trepopnoea. Acta Cardiologica. 2016;71:495-6.
  13. Harikrishnan S, Sanjay G, Agarwal A, Pratapkumar N, Krishnakumar K, Bahuleyan CG, Vijayaraghavan G, Viswanathan S, Sreedharan M, Biju R, Rajalekshmi N. One-year mortality outcomes and hospital readmissions of patients admitted with acute heart failure: Data from the Trivandrum Heart Failure Registry in Kerala, India. Am Heart J. 2017. doi: 10.1016/j.ahj.2017.03.019.
  14. Harikrishnan S, Sanjay G, Ashishkumar M, Menon J, Rajesh G, Kumar RK. Pulmonary Hypertension Registry of Kerala (PROKERALA)–Rationale, design and methods. Indian Heart J. 2016;68:709- 15.
  15. eemon P, Harikrishnan S, Sanjay G, Sivasubramonian S, Lekha TR, Padmanabhan S, Tandon N, Prabhakaran D. A PROgramme of Lifestyle Intervention in Families for Cardiovascular risk reduction (PROLIFIC Study): design and rationale of a family based randomized controlled trial in individuals with family history of premature coronary heart disease. BMC Public Health. 2017;17:10
  16. Krishnamoorthy KM, Gopalakrishnan A, Sivasankaran SS. Percutaneous Closure of Atrial Septal Defects with Deficient Rims. Cardiology. 2016;135:48-9.
  17. Krishnamoorthy KM, Sasikumar D, Bijulal S. Letter to the Editor and Response: Percutaneous Closure of Atrial Septal Defects Under Transthoracic Echocardiography Without Fluoroscopy. J Interv Cardiol. 2016;29:439-40.
  18. Krishnamoorthy S, Rajan R, Banerjee M, Kumar H, Sarma G, Krishnan S, Sarma S, Kishore A. Dopamine D3 receptor Ser9Gly variant is associated with impulse control disorders in Parkinson’s disease patients. Parkinsonism Relat Disord. 2016;30:13-7.
  19. Krishnan MN, Zachariah G, Venugopal K, Mohanan PP, Harikrishnan S, Sanjay G, Jeyaseelan L, Thankappan KR. Prevalence of coronary artery disease and its risk factors in Kerala, South India: a community-based cross-sectional study. BMC Cardiovascular Disorders. 2016;16:12
  20. Mohanan Nair KK, Ganapathi S, Sivadasanpillai H, Sivasubramanian S, Valaparambil A, Tharakan J. A case of rheumatic fibrinous pericarditis. Circ Cardiovasc Imaging. 2016;9.pii:e005399.
  21. Mohanan Nair KK, Gopalakrishnan A, Ganapathi S, Harikrishnan S, Valaparambil A, Tharakan J. Arterial Discordance in Cardiac Tamponade. J Invasive Cardiol. 2016;28:E124-E125
  22. Mohanan Nair KK, Gopalakrishnan A, Inamdar SA, Valaparambil A, Kapilamoorthy TR, Tharakan JA. Malignant anomalous right coronary artery associated with mid-cavitary hypertrophic obstructive cardiomyopathy. Postgrad Med J. 2016;92:306.
  23. Mohanan Nair KK, Namboodiri N, Abhilash SP, Thajudeen A, Valaparambil A. Wide QRS tachycardia. What is the mechanism? Indian Pacing Electrophysiol J. 2017;17:23-24.
  24. Nair KK, Gopalakrishnan A, Inamdar SA, Ganapathi S, Sivadasanpillai H, Sivasubramonian S, Valaparambil A, Tharakan J. Image of the month: Alternating bifid pulse–a novel manifestation of low cardiac output states. Clin Med (Lond). 2016;16:297-8.
  25. Nair KK, Namboodiri N, Banavalikar B, Abhilash SP, Thajudeen A, Valaparambil A. Response of narrow QRS tachycardia to premature atrial extra. What is the mechanism? Indian Pacing Electrophysiol J. 2016;16:205-208.
  26. Nair KK, Namboodiri N, Banavalikar B, Gopalakrishnan A, Prasad S, Valaparambil A, Tharakan J. Iatrogenic Pneumopericardium After Pericardiocentesis. J Invasive Cardiol. 2016;28:E225-E226.
  27. Nair KK, Namboodiri N, Banavalikar B, Inamdar S, Valaparambil A, Thajudeen A, Tharakan J. Narrow QRS Tachycardia with Spontaneous Switch. What Is the Mechanism? Pacing Clin Electrophysiol. 2016;39:768-70.
  28. Nair KK, Namboodiri N, Banavalikar B, Inamdar S, Valaparambil A, Thajudeen A, Tharakan J. Narrow QRS Tachycardia with Transition: What Is the Mechanism? Pacing Clin Electrophysiol. 2016;39:1016-7.
  29. Nair KK, Namboodiri N, Banavalikar B, Nallasivan R, Valaparambil A, Thajudeen A, Tharakan J. Narrow QRS Tachycardia with RR Alternans: What Is the Mechanism? Pacing Clin Electrophysiol. 2016;39:1148-49.
  30. Nair KK, Namboodiri N, Banavalikar B, Valaparambil A, Thajudeen A, Tharakan J. Narrow QRS Tachycardia With Varying VA and RR Intervals: What Is the Mechanism? J Cardiovasc Electrophysiol. 2016;27:1245-6.
  31. Nair KK, Namboodiri N, Banavalikar B, Valaparambil A, Thajudeen A, Tharakan J. LBBB Tachycardia: What Is the Mechanism? J Cardiovasc Electrophysiol. 2016;27:1360-3.
  32. Nair KK, Namboodiri N, Banavalikar B, Valaparambil A, Thajudeen A, Tharakan J. Narrow QRS Tachycardia with Varying Intervals: What Is the Mechanism? Pacing Clin Electrophysiol. 2016;39:1279-80.
  33. Nair KK, Namboodiri N, Chaitanya K, Abhilash SP, Thajudeen A, Valaparambil A. Wide QRS Tachycardia With Left Bundle Branch Block Morphology: What Is the Mechanism? J Cardiovasc Electrophysiol. 2017. doi: 10.1111/jce.13186.
  34. Nair KK, Namboodiri N, Divakaramenon S, Banavalikar B, Abhilash SP, Thajudeen A, Valaparambil A. Narrow QRS Tachycardia in a Patient with Tachycardiomyopathy: What Is the Mechanism? Pacing Clin Electrophysiol. 2016;39:1410-1.
  35. Nair KK, Namboodiri N, Priyadarshini A, Banavalikar B, Abhilash SP, Thajudeen A, Valaparambil A. Electrical Cardioversion of an Irregular Narrow QRS Tachycardia to aegular Narrow QRS Tachycardia. J Cardiovasc Electrophysiol. 2017;28:353-54.
  36. Nair KK, Namboodiri N, Singh G, Karunakaran S, Banavalikar B, Abhilash SP, Thajudeen A, Valaparambil A. Response of Narrow QRS Tachycardia to Late Coupled PVC: What is the Mechanism? J Cardiovasc Electrophysiol. 2017;28:355-56.
  37. Nair KK, Namboodiri N, Thajudeen A, Chaitanya K, Abhilash SP, Valaparambil A. Atrial Entrainment During Posterior Fascicular Ventricular Tachycardia. J Cardiovasc Electrophysiol. 2017. doi: 10.1111/ jce.13191.
  38. Nair KK, Namboodiri N, Thajudeen A, Patel N, Valaparambil A, Tharakan J. Narrow QRS Tachycardia With RR Alternans and 2: 1 VA Relation. J Cardiovasc Electrophysiol. 2016;27:872- 3.
  39. Nair KK, Namboodiri N, Thajudeen A, Valaparambil A, Tharakan J. Narrow QRS Tachycardia with Long RP Interval: What Is the Mechanism? Pacing Clin Electrophysiol. 2016;39:1150-52.
  40. Nair KK, Namboodiri N, Valaparambil A, Thajudeen A, Tharakan J. LBBB to RBBB Tachycardia. What is the Mechanism? J Cardiovasc Electrophysiol. 2016;27:998-1000.
  41. Nair KK, Namboodiri N, Valaparambil A, Thajudeen A, Tharakan J. Wide to Narrow QRS Tachycardia: What Is the Mechanism? J Cardiovasc Electrophysiol. 2016;27:1118-20.
  42. Nair KK, Thajudeen A, Namboodiri N, Chaithanya K, Abhilash SP, Valaparambil A. Paradoxical Increase in Stimulus to Atrium Interval During Para Hisian Pacing. J of Cardiovasc Electrophysiol. 2017. doi: 10.1111/jce.13176.
  43. Nair KK, Thajudeen A, Namboodiri N, Valaparambil A, Tharakan J. ECG Challenge: Single or Double Tachycardia? Pacing Clin Electrophysiol. 2016;39:763-4.
  44. Nair KK, Thajudeen A, Namboodiri N, Valaparambil A. Wide QRS tachycardia in a patient with pre excitation; what are the pathways involved? Pacing manoeuvres to characterize a unique pathway. Indian Pacing and Electrophysiology Journal. 2017;17:58-62.
  45. Nair KKM, Namboodiri N, Banavalikar B, Abhilash SP, Thajudeen A, Valaparambil A. Observations During paraHisian Entrainment. J Cardiovasc Electrophysiol. 2017;28:451-452
  46. Nair KKM, Thajudeen A, Namboodiri N, Valaparambil A, Tharakan J. Narrow QRS tachycardia with AV response from 2:1 to 1:1. What is the mechanism? Acta Cardiol. 2017. doi: 10.1080/00015385.2017.1291159
  47. Nair SS, Harikrishnan S, Sarma PS, Thomas SV. Metabolic syndrome in young adults with epilepsy. Seizure. 2016;37:61-4.
  48. Prabhu MA, Srinivas Prasad BV, Thajudeen A, Namboodiri N. Persistent atrial standstill in acute myocarditis. Indian Pediatr. 2016;53:162-4.
  49. Prasad S, Harikrishnan S, Sanjay G, Abhilash SP, Bijulal S, Nair KK, Tharakan J, Kumar VA. Clinical Outcomes of patients with coronary artery disease who underwent FFR evaluation of intermediate coronary lesionS-COFFRS study. Indian Heart Journal. 2016. https://doi.org/10.1016/j. ihj.2016.12.007.
  50. Prasad S, Namboodiri N, Thajudheen A, Singh G, Prabhu MA, Abhilash SP, Nair KM, Rashid A, Kumar VA, Tharakan JA. Flecainide challenge test: Predictors of unmasking of type 1 Brugada ECG pattern among those with non-type 1 Brugada ECG pattern. Indian Pacing Electrophysiol J. 2016;16:53- 8.
  51. Prasad S, Singh G, Kumar DS, Sivasankaran S, Kumar VA. Ectopic left ventricular apical diverticulum. Eur Heart J. 2017. doi: 10.1093/eurheartj/ehw519.
  52. Saran M, Sivasubramonian S, Abhilash SP, Tharakan JA. Acquired fontan paradox in isolated right ventricular cardiomyopathy. Ann Pediatr Cardiol. 2016;9:251-3.
  53. Saran M, Sivasubramonian S. Doughnut appearance of left ventricle in isolated left ventricular endomyocardial fibrosis. Indian Heart J. 2016;68 Suppl 2:S156-S157
  54. Sasikumar D, Dharan BS, Menon S, Sivasubramanian S, Kapilamoorthy TR. Surgical closure of aortopulmonary window in a topsy-turvy heart: a surgical challenge. Ann Thorac Surg. 2016;101:1982-4.
  55. Sasikumar D, Krishnamoorthy KM, Sivasubramanian S, Gopalakrishnan A, Behera D. Anomalous venous drainage: a rare case of cyanosis. Eur Heart J Cardiovasc Imaging. 2016;17:977.
  56. Sasikumar D, Mahadevan KK. Large esophageal hematoma following transesophageal echocardiography guided device closure of atrial septal defect. Echocardiography. 2016;33:141-4.
  57. Sasikumar D, Namboodiri N, Krishnamoorthy KM. Unraveling a Knot in the Heart. JACC Cardiovasc Interv. 2016;9:1510-1
  58. Sini S, Deepa D, Harikrishnan S, Jayakumari N. High-density lipoprotein from subjects with coronary artery disease promotes macrophage foam cell formation: role of scavenger receptor CD36 and ERK/MAPK signaling. Mol Cell Biochem. 2017;427:23-34.
Publications 2015-2016
  1. Chigurupati K, Reshmi LJ, Gadhinglajkar S, Venkateshwaran S, Sreedhar R. Pulmonary edema following transcatheter closure of atrial septal defect. Ann Card Anaesth 2015; 18: 441-4.
  2. Choudhary D, Chaurasia AK, Kumar MS, Arulkumar A, Thajudeen A, Namboodiri N, Sanjay G, Abhilash SP, Ajitkumar VK, Tharakan JA. Radial left ventricular dyssynchrony by speckle tracking in apical versus non apical right ventricular pacing- Evidence of dyssynchrony on medium term follow up. Journal of Cardiovascular and Thoracic Research 2016; 8: 20-25
  3. Harikrishnan S, Sanjay G, Anees T, Viswanathan S, Vijayaraghavan G, Bahuleyan CG, Sreedharan M, Biju R, Nair T, Suresh K, Rao AC, Dalus D, Huffman MD, Jeemon P. Clinical presentation, management, inhospital and 90-day outcomes of heart failure patients in Trivandrum, Kerala, India: the Trivandrum Heart Failure Registry :Trivandrum Heart Failure Registry. Eur J Heart Fail. 2015; 17: 794-800.
  4. Harikrishnan S; There’s something about that name: Nomenclature of anomalous coronary arteries. (Editorial) Indian Heart J. 2015; 67 Suppl 3: S4-6.
  5. Mukund A. Prabhu, Narayanan Namboodiri, Srinivas Prasad BV, SP Abhilash, Anees Thajudeen, Kumar VK Ajith. Acute outcome of treating patients admitted with electrical storm in a tertiary care centre. Indian Pacing and Electrophysiology Journal. 2016; 15: 286-90.
  6. Nair AR, Samavedam S, Tharakan JM, Karunakaran J. Acute rheumatic valvulitis with palisading: a rare but classic histopathological finding in
  7. Nair SS, Harikrishnan S, Sarma PS, Thomas SV. Metabolic syndrome in young adults with epilepsy. Seizure 2016; 37: 61-4.
  8. Savlania A, Viswanathan S, Pitchai S, Unnikrishnan M. Dysphagia aortica due to penetrated aortic ulcer. Eur J Cardiothorac Surg. 2015; 48: 337.
  9. Clinical presentation, management, in-hospital and 90-day outcomes of heart failure patients in Trivandrum, Kerala, India: the Trivandrum Heart Failure Registry Harikrishnan S, Sanjay G, Anees T, Viswanathan S, Vijayaraghavan G, Bahuleyan CG, Sreedharan M, Biju R, Nair T, Suresh K, Rao AC, Dalus D, Huffman MD, Jeemon P; Trivandrum Heart Failure Registry.. Eur J Heart Fail. 2015 Aug;17(8):794-800. doi: 10.1002/ejhf.283. Epub 2015 May 23.
  10. Partial papillary muscle rupture following percutaneous mitral valvuloplasty without mitral regurgitation. Gopalakrishnan A, Ganapathi S, Sivasubramonian S, Sivadasanpillai Harikrishnan. J Echocardiogr. 2016 Feb 12
  11. Metabolic syndrome in young adults with epilepsy. Nair SS, Harikrishnan S, Sarma PS, Thomas SV. Seizure. 2016 Mar 5;37:61-64. doi: 10.1016/j.seizure.2016.03.002. [Epub ahead of print] PMID: 27002245.
  12. There's something about that name: Nomenclature of anomalous coronary arteries. (Editorial) Harikrishnan S. Indian Heart J. 2015 Dec;67 Suppl 3:S4-6. doi: 10.1016/j.ihj.2016.01.004. Epub 2016 Jan 19. No abstract available. PMID: 26995428
  13. Cardiac catheterization in children with pulmonary hypertensive vascular disease: Consensus statement from the Pulmonary Vascular Research Institute, Pediatric and Congenital Heart Disease Task Forces
Publications 2014-2015
  1. Sini.S, Deepa.D, Harikrishnan.S and Jayakumari.N.Evidence for an exclusive association of matrix metalloproteinase-9 with dysfunctional high density lipoprotein: a novel finding “ J. Atherosclerosis. 2014 Sep;236(1):162-8.DOI :10. 1016 /j.atherosclerosis.2014.06.007
  2. Harikrishnan S, Sanjay G. Vitamin D and cardiovascular disease - Have we found the answers? (Editorial) Indian Heart J. 2015 Jan-Feb; 67(1):11-3. doi: 10.1016/j. ihj.2015.02.016. Epub 2015 Mar 12.
  3. Sini S, Deepa D, Harikrishnan S, Jayakumari N Evidence for an exclusive association of matrix metalloproteinase-9 with dysfunctional high-density lipoprotein: a novel finding.. Atherosclerosis. 2014 Sep;236(1):162-8.
  4. Lopes AA, Barst RJ, Haworth SG, Rabinovitch M, Al Dabbagh M, Del Cerro MJ, Ivy D, Kashour T, Kumar K, Harikrishnan S, D'Alto M, Thomaz AM, Zorzanelli L, Aiello VD, Mocumbi AO, Santana MV, Galal AN, Banjar H, Tamimi O, Heath A, Flores PC, Diaz G, Sandoval J, Kothari S, Moledina S, Gonçalves RC, Barreto AC, Binotto MA, Maia M, Al Habshan F, Adatia I. Repair of congenital heart disease with associated pulmonary hypertension in children: what are the minimal investigative procedures? Consensus statement from the Congenital Heart Disease and Pediatric Task Forces, Pulmonary Vascular Research Institute (PVRI). Pulm Circ. 2014 Jun;4(2):330-41.
  5. Chaurasia AK, Harikrishnan S, Ajith VK, Tharakan JM. Mitral Stenosis, LV Aneurysm, Myocardial Bridge, and Myocardial Infarction: The Mystery Demystified. IntCardiovasc Res J. 2013 Sep;7(3):104-5. Epub 2013 Sep 1.
  6. Thajudeen A, Namboodiri N, Choudary D, Valaparambil AK, Tharakan JA. ‘Classical’ Response in a Pre Excited Tachycardia, What are the Pathways Involved? Teaching rounds in cardiac electrophysiology, Circ Arrhythm Electrophysiol. 2013 Apr 1;6(2):e11-6. doi: 10.1161/ CIRCEP.111.979120
  7. S.P. Abhilash, Narayanan Namboodiri. Infections of cardiac implantable electronic devices-Editorial: Indian pacing and electrophysiology journal, 2015; 14 (6): 278-280
  8. Francis J, Namboodiri N. Ventricular arrhythmias in arrhythmogenic right ventricular dysplasia. Indian Pacing Electrophysiol J. 2015 Apr 1;15(1):82-5..
  9. Francis J, Namboodiri N. Update on ventricular tachyarrhythmias and related sudden cardiac death. Indian Pacing Electrophysiol J. 2014 Dec 15;14(6):316-9.
  10. Abhilash S, Namboodiri N. Infections of cardiac implantable electronic devices. Indian Pacing Electrophysiol J. 2014 Dec 15;14(6):278-80.
  11. Choudhary D, Namboodiri N, Tharakan JA. A case of 'Masquerading' bundle branch block: a forgotten concept. Indian Heart J. 2014 Jan-Feb;66(1):139-40.
  12. Saktheeswaran MK1, Krishnamoorthy KM2, Sivasankaran S. Isolation of the left subclavian artery: a rare aortic arch anomaly. Cardiol Young. 2014 Sep 24:1-3.
  13. Subramanian V1, KavasseryMahadevan K, Sivasubramonian S. Self-repositioning of an embolized patent ductus arteriosus device-a nightmare turned into sweet dreams.Catheter Cardiovasc Interv. 2015 May;85(6):1013-6. doi: 10.1002/ccd.25725. Epub 2014 Nov 22.
  14. Subramanian V1, Mahadevan KK1, Sivasubramonian S1, Tharakan J1. Pseudo interruption of the inferior vena cava complicating the device closure of patent ductus arteriosus: Case report and short review of venous system embryology. Ann Pediatr Cardiol. 2014 Jan;7(1):64-6. doi: 10.4103/0974-2069.126567.
  15. Subramanian V1, Kavassery MK1, Sivasubramonian S1, Sasidharan B Percutaneous device closure of persistent ductus venosus presenting with hemoptysis. Ann Pediatr Cardiol. 2013 Jul;6(2):173-5. doi: 10.4103/0974- 2069.115274
  16. Daivadanam M1, Wahlstrom R, SundariRavindran TK, Sarma PS, Sivasankaran S, ThankappanKR.Design and methodology of a community-based cluster-randomized controlled trial for dietary behaviour change in rural Kerala. Glob Health Action. 2013 Jul 17;6:20993. doi: 10.3402/gha.v6i0.20993.
  17. Venkateshwaran S, Krishnamoorthy KM, Sivasankaran S.Percutaneous device closure of abernethy malformation-A treatable cause of hepatopulmonary syndrome. Catheter Cardiovasc Interv. 2013 Oct 30. doi: 10.1002/ccd.25275. [Epub ahead of print]
  18. Pagidipati NJ1, Huffman MD, Jeemon P, Gupta R, Negi P, Jaison TM, Sharma S, Sinha N, Mohanan P, Muralidhara BG, BijulalS,Sivasankaran S, Puri VK, Jose J, Reddy KS, Prabhakaran D. Association between gender, process of care measures, and outcomes in ACS in India: results from the detection and management of coronary heart disease (DEMAT) registry. PLoS One. 2013 Apr 24;8(4):e62061. doi: 10.1371/journal. pone.0062061. Print 2013.
  19. Kumar SM, Sivasankaran S.Right pulmonary artery-toleft atrial fistula: a rare cause of neonatal cyanosis. Pediatr Cardiol. 2013 Mar;34(3):757-9. doi: 10.1007/ s00246-012-0534-y. Epub 2012 Oct 12.
  20. Harikrishnan S, Sanjay G ,Krishnakumar M Balloon Mitral Valvotomy. Cardiac Catheterization and Imaging (From Pediatrics to Geriatrics)Eds IB Vijayalekshmi Jaypee Brothers, New Delhi, India – 2015.
  21. Harikrishnan.S, Sanjay G – Mitral Stenosis and Percutaneous Mitral Valvotomy. Color Atlas of Cardiovascular Disease. Eds Levine Glenn. Jaypee Brothers, Philadelphia, USA – 2015.
  22. Narayanan Namboodiri, Shunmuga Sundaram, S.P. Abhilash. Interventions for supraventricular tachyarrhythmias. Text book of Cardiac catheterization and Imaging (From pediatrics to geriatrics), 2014;1st edition, Jaypee Brothers Medical Publishers (P) Ltd. Chapter 58.
  23. S.P. Abhilash, Narayanan Namboodiri. Permanent pacemaker implantation techniques : Text book of Cardiac catheterization and Imaging (From pediatrics to geriatrics), 2014;1st edition, Jaypee Brothers Medical Publishers (P) Ltd, Chapter 60.
  24. Abhilash SP, Dinesh Choudhary, Narayanan Namboodiri. Congenital Heart Blocks and Bradyarrhythmias: Text Book of a comprehensive approach to Congenital heart diseases. 2014. Ist Edition. Jaypee Brothers Medical Publishers (P) Ltd, Chapter 59.
  25. Invasive Electrophysiology Testing and Devices in Children. Dinesh Choudhary, Abhilash SP, Narayanan Namboodiri. Text Book of a comprehensive approach to Congenital heart diseases. Jaypee Brothers Medical Publishers (P) Ltd, Chapter 6.
  26. Sivaprasad Veerbhadran, Ajay Savlania, Shivanesan Pitchai and Madathipat Unnikrishnan. Adolescent in respiratory distress due to Giant pulmonary arteriovenous malformation. European Journal of CardioThoracic Surgery Advance Access published. Epub online march 2015
Publications 2013-2014
  1. Abhilash S, Namboodiri N. Reuse Potential of Pacemakers and Implantable Cardioverterdefibrillators - Some Real World Data. Indian Pacing Electrophysiol J 2013;13:99-100.
  2. Abhilash SP, Namboodiri N. Sudden cardiac death - Historical perspectives. Indian Heart J 2014;66S1:S4-S9.
  3. Ahmed K oloyo, Olusoga A Sofola, Chikodi N Anigbogu, Renuka R Nair, Harikrishnan S Vijayakumar and Adelaide C Fernandez. Testosterone reduces vascular relaxation by altering cyclic adenosine monophosphate pathway and potassium channel activation in male Sprague Dawley rats feda high salt diet. Ther ADV Cardiovasc Dis 2013; 7(2) 75-85 DOI:10.1177/1753944713479996.
  4. Bijulal S, Kumar SM, Subramanian V, Krishnamoorthy KM, Sivasankaran S, Tharakan JA. Percutaneous closure of a moderate to large tubular or elongated patent ductusarteriosus in children younger than 3 years: is the ADO II appropriate? Pediatr Cardiol 2013;34:1661-7.
  5. Bijulal S, Kumar SM, Krishnamoorthy KM. Percutaneous transjugular device closure of postoperative residual atrial septal defect. J Invasive Cardiol 2013; 25:E78-80.
  6. Bijulal S, Kumar SM, Sivasankaran S. Unusual association of aortic valve stenosis with ventricular septal defect and pulmonary atresia: Differentiation from truncusarteriosus with truncal valve stenosis. Ann Pediatr Cardiol 2013; 6:87-9.
  7. Bijulal S, Pagidipati NJ, Huffman MD, Jeemon P, Gupta R, Negi P, Jaison TM, Sharma S, Sinha N, Mohanan P, Muralidhara BG, Sivasankaran S, Puri VK, Jose J, Reddy KS, Prabhakaran D. Association between gender, process of care measures, and outcomes in ACS in India: results from the detection and management of coronary heart disease (DEMAT) registry. PLoS One 2013; 24:8.
  8. Bijulal S, Sukulal K, Tharakan JA. Differential diagnosis of vascular structures in relation to upper ascending aorta: The retro-aortic innominate vein. Ann Pediatr Cardiol 2013 6:97-8.
  9. Chaurasia AK, Harikrishnan S, Bijulal S,Choudhary D, Tharakan J.Cardiac rhabdomyoma in familial tuberous sclerosis.J CardiovascThorac Res 2013;5:71-2.
  10. Choudhary D, Namboodiri N, Tharakan JA. A case of ‘Masquerading’ bundle branch block: A forgotten concept. Indian Heart J 2014;66:139-40.
  11. Daivadanam M, Wahlstrom R, Ravindran TKS, Sarma PS, Sivasankaran S, Thankappan KR. Design and methodology of a community-based cluster randomized controlled trial for dietary behaviour change in rural Kerala. Global Health Action 2013; 6: 20993. • Das A, Anupa AV, Radhakrish
  12. Harikrishnan S, Sanjay G. Heart Failure in South Asia. Current Cardiology Reviews 2013;9:102–11.
  13. Kumar M, Bijulal S, Krishnamoorthy KM. Percutaneous Transjugular Device Closure of Postoperative Residual Atrial septal defect. J Invasive Cardiol 2013;25:78-80.
  14. Kumar SM, Choudhary D, Arulkumar A, Anees T, Nair S, Tharakan JA. Prevalence of electrocardiographic changes in patients with acute aneurysmal subarachnoid hemorrhage and their relationship with outcome. Indian J Neurosurg 2013;2:52-6.
  15. Kumar SM, Venkateshwaran S, Sasidharan B, Krishnamoorthy KM, Sivasubramonian S, Tharakan JA. Real-time 3-dimensional transesophageal echocardiography-guided device closure of coronary arteriovenous fistula. J Am CollCardiol 2013;61:1458.
  16. Kumar SM, Venkateswaran S, Krishnamoorthy KM. Myocardial infarctin in a 4-year old child: role of echocardiography in diagnosis. Echocardiography 2013;30:53-5.
  17. Kumar SM, Venkateshwaran S, Krishnamoorthy KM, Sivasankaran S. ASD Device Embolization: Caught in the Act. Echocardiography 2013;30:218-9.
  18. Ma W, Wang X, Cingolani E, Thajudeen A, Gupta N, Nageh MF, Kannarkat V, Merla R, Chugh SS, Shehata M. Mapping and ablation of ventricular tachycardia from the upper left fascicle. Making the most of the fascicular potentials. CircArrhythm Electrophysiol 2013;1;6:47-51.
  19. Nair KK, Sanjay G, Sasidharan B, Thajudeen A, Pillai HS, Tharakan J, Titus T, Kumaran AV, Sivasubramonian S, Krishnamoorthy KM. Asymptomatic right ventricular dysfunction in surgically repaired adult tetralogy of fallot patients. Ann Pediatr Cardiol 2013;6:24-8.
  20. Nair KKM, Harikrishnan S, Titus T, Varaparambil A, Sivasankaran S, Krishnamoorthy KM, Namboodiri N, Bijulal S, Anees T, Sanjay G, Tharakan J. Persistent pulmonary artery hypertension in patients undergoing balloon mitral valvotomy. Pulmonary circulation 2013;3:426-31
  21. Pagidipati NJ, Huffman MD, Jeemon P, Gupta R, Negi P, Jaison TM, Sharma S, Sinha N, Mohanan P, MuralidharaBG,Bijulal S, Sivasankaran S, Puri VK, Jose J, Reddy KS, Prabhakaran D. Association between gender, process of caremeasures, and outcomes in ACS in India: results from the detection and management of coronary heart disease(DEMAT) registry. PLoS One 2013;24;8:e62061.
  22. Parameshwarappa SK, Savlania A, Viswanathan S, Gadhinglajkar S, Raman KT, Unnikrishnan M. Chronic mesenteric ischemia and therapeutic paradigm of mesenteric revascularization. Indian J Gastroenterol 2014;33(2):169-74.
  23. Sivasubramanian S, Ponnusamy SS, Raman KT, Pillai VV. An unusual cause of iatrogenicaortic regurgitation. J Am CollCardiol 2013;15;62:1488
  24. Sivasankaran S, Thankappan KR. Prevention of non-communicable diseases requires a life course approach: a case study from Kerala. Indian J Med Res 2013;137:874-7.
  25. SivasankaranS, Thankappan KR, Mini GK, Daivadanam M, Sarma PS, Abdul Khader S. Impact of a community based intervention program on awareness, treatment and control of hypertension in a rural Panchayat, Kerala, India. Indian Heart J 2013; 65:504-9.
  26. Subramanian V, Kavassery MK, Sivasubramonian S, Sasidharan B. Percutaneous device closure of persistent ductusvenosus presenting with hemoptysis. Ann Pediatr Card 2013; 6:173-5.
  27. Subramanian V, Mahadevan KK, Sivasubramonian S, Tharakan J. Pseudo interruption of the inferior vena cava complicating the device closure of patent ductusarteriosus: Case report and short review of venous system embryology. Ann Pediatr Card 2014; 7:64-6
  28. Sundaram PS, Narayan GS, Prabhu MA, Bijulal S, Sanjay G, Namboodiri KKN, et al. An unusual cause for unruptured sinus of valsalva aneurysm. Indian Heart J 2013;65:484–7.
  29. Thajudeen A, Kannarkat V, Noheria A, ShehataM . Wide complex tachycardia in a patient with a dual chamber defibrillator. What is the rhythm? A tale of timing cycles. Heart Rhythm 2013;10:1237-9.
  30. Thajudeen A, Namboodiri N, Choudary D, Valaparambil AK, Tharakan JA. ‘Classical’ Response in a Pre Excited Tachycardia, What are the Pathways Involved? Teaching rounds in cardiac electrophysiology. CircArrhythmElectrophysiol 2013; 6:11-6.
  31. Thankappan KR, Sivasankaran S, Mini GK, Daivadanam M, Sarma PS, Abdul Khader S. Impact of a Community Based Intervention Program on Awareness, Treatment and Control of Hypertension in a Rural Panchayat, Kerala, India. Indian Heart Journal 2013; 65 (5): 504-9, doi.org/10.1016/j. ihj.2013.08.023.
  32. Venkateshwaran S, Krishnamoorthy KM, Sivasankaran S, Tharakan J. Pseudo interruption of the inferior vena cava complicating the device closure of patent ductusarteriosus: Case report and short review of venous system embryology. Ann paedcardiol 2014;7:64-6
  33. Zachariah G, Harikrishnan S, Krishnan MN, Mohanan PP, Sanjay G, VenugopalK, Thankappan KR; Cardiological Society of India Kerala Chapter Coronary Artery Disease and Its Risk Factors Prevalence (CSI Kerala CRP) Study Investigators Prevalence of coronary artery disease and coronary risk factors in Kerala, South India: A population survey - Design and methods. Indian Heart J 2013;65:243-9
Publications 2012-2013
  1. Choudhary D, Sundaram S, Thajudeen A, Namboodiri N. Two pacing spikes on the QRS complex in a singlechamber pacemaker. Indian Heart J. 2012;64:527-9.
  2. Choudhary D, Sivasankaran S, Venkateshwaran S, Sasidharan B : Cor triatriatum dexter: a rare cause of isolated right atrial enlargement.. Pediatr Cardiol. 2013 Jan;34(1):198-9. doi: 10.1007/s00246-012- 0443-0.
  3. Deepa S, Bijulal S, Baiju DS, Thomas M. Septal Course of Left Anterior Descending Artery From the Right Aortic Sinus in Tetralogy of Fallot: A Benign Anomaly and Important Lessons Learned. PediatrCardiol. 2012 Jul 31. [Epub ahead of print]
  4. Daivadanam M, Thankappan KR, Sarma PS, Harikrishnan S. Catastrophic health expenditure for Acute Coronary Syndrome in Kerala, India. Indian Journal of Medical Research 2012; 136:585-92
  5. Choudhary D, Sundaram S, Thajudeen A, Namboodiri N. Two pacing spikes on the QRS complex in a singlechamber pacemaker. Indian Heart J. 2012;64:527-9.
  6. Choudhary D, Sivasankaran S, Venkateshwaran S, Sasidharan B : Cor triatriatum dexter: a rare cause of isolated right atrial enlargement.. Pediatr Cardiol. 2013 Jan;34(1):198-9. doi: 10.1007/s00246-012- 0443-0.
  7. Deepa S, Bijulal S, Baiju DS, Thomas M. Septal Course of Left Anterior Descending Artery From the Right Aortic Sinus in Tetralogy of Fallot: A Benign Anomaly and Important Lessons Learned. PediatrCardiol. 2012 Jul 31. [Epub ahead of print]
  8. Harikrishnan S, Bohora S, Pillai VV, Sanjay G, Rajeev E, Tharakan JM, Titus T, Kumar VK, Sivasankaran S, Namboodiri KK. Left atrial myxoma-influence of tumour size on electrocardiographic findings. Indian Heart J. 2012 Mar-Apr;64(2):170-2.
  9. Harikrishnan S, Ganapathi S: Heart failure in South Asia. Curr Cardiol Rev. 2013 Apr 15. [Epub ahead of print]PMID:
  10. Harikrishnan S, Ganapathi S, Tharakan J. Letter by Sivadasanpillai et al regarding article, "management of severe mitral stenosis during pregnancy". Circulation. 2012 Jul 3;126(1):e15;
  11. Jeemon P, Prabhakaran D, Goenka S, Ramakrishnan L, Padmanabhan S, Huffman M, Joshi P, Sivasankaran S, Mohan BVM, Ahmed F, Ramanathan M, Ahuja R, Sinha N, Thankappan K R, Reddy KS on behalf of the Sentinel Surveillance in Industrial Populations Study Group. Impact of comprehensive cardiovascular risk reduction program on risk factor clustering associated with elevated blood pressure in an Indian industrial population. Indian J Mel Res 2012; 135: 485-493
  12. Mahesh Kumar S, Thajudeen A. An Unusual Mediastinal Mass in a Patient with Myocardial Infarction. Echocardiography. 2012 Oct 24. doi: 10.1111/echo.12007
  13. Mahesh Kumar S, Venkateshwaran S, Sasidharan B, Krishnamoorthy K, Sivasubramonian S, Tharakan JA. Real-Time 3-Dimensional Transesophageal Echocardiography-Guided Device Closure of Coronary Arteriovenous Fistula. J Am Coll Cardiol. 2013;61(13):1458
  14. Mahesh Kumar S, Venkateshwaran S, Krishnamoorthy K. Myocardial Infarction in a 4-Year-Old Child: Role of Echocardiography in Diagnosis Echocardiography 2013;30:E53-E55
  15. Mohanan Nair KK, Pillai HS, Thajudeen A, Krishnamoorthy KM, Sivasubramonian S, Namboodiri N, Sasidharan B, Ganapathy S, Varaparambil A, Titus T, Tharakan J. Immediate and long-term results following balloon mitral valvotomy in patients With atrial fibrillation. Clin Cardiol. 2012;35:E35-9.
  16. Mohanan PP, Mathew R, Harikrishnan S, Krishnan MN, Zachariah G, Joseph J, Eapen K, Abraham M, Menon J, Thomas M, Jacob S, Huffman MD, Prabhakaran D; on behalf of the Kerala ACS Registry Investigators. Presentation, management, and outcomes of 25 748 acute coronary syndrome admissions in Kerala, India: results from the Kerala ACS Registry. Eur Heart J. 2012 Sep 7. PMID: 22961945.
  17. Nair KM, Ganapathi S, Sasidharan B, Thajudeen A, Pillai H, Kumaran A, et al.: Asymptomatic right ventricular dysfunction in surgically repaired adult tetralogy of Fallot patients. Annals of Pediatric Cardiology. 2013;6(1):24
  18. Namboodiri N. Wide-complex tachycardia: What is the diagnosis? Indian Heart J. 2012;64:435-6.
  19. Namboodiri N, Stiles MK, Young GD, Sanders P. Electrophysiological features of atrial flutter in cardiac sarcoidosis: a report of two cases. Indian Pacing Electrophysiol J. 2012;12:284-9.
  20. Namboodiri N. Ablation of Ventricular Arrhythmias in GUCH: The Surgical Scarand the Second Substrate. Indian Pacing Electrophysiol J. 2012;12:1-3.
  21. Nair KK, Pillai HS, Thajudeen A, Tharakan J, Titus T, Valaparambil A, Sivasubramonian S, Mahadevan KK, Namboodiri N, Sasidharan B, Ganapathi S. Comparative study on safety, efficacy, and midterm results of balloon mitral valvotomy performed with triple lumen and double lumen mitral valvotomy catheters. Catheter CardiovascInterv. 2012;80:978-86
  22. Nair KM, Ganapathi S, Sasidharan B, Thajudeen A, Pillai H, Kumaran A, et al.: Asymptomatic right ventricular dysfunction in surgically repaired adult tetralogy of Fallot patients. Annals Pediatr Cardiol 2013;6(1):24
  23. Namboodiri N. Wide-complex tachycardia: What is the diagnosis? Indian Heart J. 2012;64:435-6. Namboodiri N, Stiles MK, Young GD, Sanders P. Electrophysiological features ofatrial flutter in cardiac sarcoidosis: a report of two cases. Indian PacingElectrophysiol J. 2012;12:284-9.
  24. Namboodiri N. Ablation of Ventricular Arrhythmias in GUCH: The Surgical Scarand the Second Substrate. Indian Pacing Electrophysiol J. 2012;12:1-3.
  25. Narayan GS, Sivasubramonian S. Spontaneous Fontan physiology in burnt-out endomyocardial fibrosis. Circulation. 2012 Jan 31;125(4):e296-7. doi: 10.1161/CirculationAHA.111.052514
  26. Pagidipati NJ, Huffman MD, Jeemon P, Gupta R, Negi P. Jaison TM, Sharma S, Sinha N, Mohanan P, Muralidhara BG, Bijulal S, Sivasankaran S, Puri VK, Jose J, Reddy KS, Prabhakaran D. Association between Gender, Process of Care Measures, and Outcomes in ACS in India: Results from the Detection and Management of Coronary Heart Disease (DEMAT) Registry. PLOS ONE . April 2013 | Volume 8 | Issue 4 | e62061
  27. Raghuram KA, Bijulal S, Krishnamoorthy KM, Tharakan JA Regression of Pulmonary Vascular Disease After Therapy of Abernethy Malformation in Visceral Heterotaxy. .Pediatric Cardiol. 2012 Jul 28. [Epub ahead of print]
  28. Sivadasan Pillai H, Ganapathi S . Tobacco Cessation Approaches and Impact on CVD. Global Heart. 2012 Jul;7(2):129–38 • Sivasankaran S : Outdoor physical activity & cardiovascular health. Indian J Med Res. 2012 Aug;136(2):301-3
  29. Sukumaran S, Jayadevan ER, Mandilya A, Sreedharan SE, Harikrishnan S, Radhakrishnan N, Sylaja PN. Successful mechanical thrombectomy of acute middle cerebral ary occlusion due to vegetation from infective endocarditis. Neurol India. 2012 MarApr;60(2):239-40.
  30. Sukulal K, Namboodiri N. Congenital lymphedema: another unique and genderspecific stigmata of tuberous sclerosis? Indian Pediatr. 2012;49:845.
  31. Thajudeen A, Namboodiri N,Choudary D, Valaparambil AK, Tharakan JA. ‘Classical’ response in a pre-excited tachycardia, What are the pathways involved? Manuscript accepted for publication - Teaching rounds in cardiac electrophysiology, Circulation Arrhythmia and Electrophysiology. 2013 Apr 1;6(2):e11-6. doi: 10.1161/CIRCEP.111.979120
  32. Thajudeen A, Namboodiri N, Valaparambil AK, Nair KK, Tharakan JM. Unusual response of an accessory atrioventricular connection to adenosine. J Cardiovasc Electrophysiol. 2012 ;23:223-4
  33. Vijayaraghavan G, Sivasankaran S. Tropical endomyocardial fibrosis in India: a vanishing disease! Indian J Med Res. 2012 Nov;136(5):729-38.
Publications 2011-2012
  1. Bijulal S, Krishnamoorthy KM, Sivasankaran S.Retroaortic coronary artery: possible contraindication for device closure of atrial septal defect. Pediatr Cardiol 2011; 32:1001-1003.
  2. Cerro MJ, Abman S, Diaz G, Freudenthal AH, Freudenthal F, Harikrishnan S, Haworth SG, Ivy D, Lopes AA, Raj JU, Sandoval J, Stenmark K, Adatia I. A consensus approach to the classification of pediatric pulmonary hypertensive vascular disease: Report from the PVRI Pediatric Taskforce, Panama 2011.Pulm Circ. 2011;1:286-298
  3. Chaurasia AK, Harikrishnan S, Bijulal S, Krishnamoorthy KM, Sivasankaran S, Tharakan JA. Usefulness of Doppler derived end diastolic flow gradient across the patent ductus arteriosus in selecting coils for ductal occlusion. Pediatr Cardiol. 2012; 33:290-294.
  4. Gopal R, Harikrishnan S, Sivasankaran S, Ajitkumar VK, Titus T, Tharakan JM. Once weekly Azithromycin in secondary prevention of rheumatic fever, Indian Heart J 2012; 6401:12-15
  5. Gupta SK, Krishnamoorthy K, Tharakan JA, Sivasankaran S, Sanjay G, Bijulal S, Anees T. Percutaneous closure of patent ductus arteriosus in children: Immediate and short-term changes in left ventricular systolic and diastolic function. Ann Pediatr Cardiol 2011; 4: 139-44.
  6. Harikrishnan S, Bijulal S, Krishnakumar N, Ajithkumar VK.Combined mitral and pulmonary valvotomy with Inoue balloon in rheumatic quadrivalvular disease. J Heart Valve Dis. 2011;20:112-113.
  7. Harikrishnan S, Bimal F, Ajithkumar V, Bhat A, Titus T, Tharakan J. Percutaneous treatment of congenital coronary arteriovenous fistulas. J Interv Cardiol. 2011; 24: 208-215
  8. Harikrishnan.S, Ed Percutaneous Mitral Valvotomy :. Jaypee brothers; New Delhi. 2012
  9. Hingwala DR, Chatterjee S, Kesavadas
  10. Huffman MD, Rao KD, Pichon-Riviere A, Zhao D Harikrishnan S, Ramaiya K, Ajay VS, Goenka S, Calcagno JI, Caporale JE, Niu S, Li Y, Liu J, Thankappan KR, Daivadanam M, van Esch J, Murphy A, Moran AE, Gaziano TA, Suhrcke M, Reddy KS, Leeder S, Prabhakaran D. A cross-sectional study of the microeconomic impact of cardiovascular disease hospitalization in four low- and middle-income countries. PLoS One. 2011;6(6):1-10(e20821).
  11. Kottayil BP, Jayakumar K, Dharan BS, Pillai VV, Ajitkumar V, Menon S, Sanjay G, Anomalous origin of left coronary artery from pulmonary artery in older children and adults: direct aortic implantation. Ann Thorac Surg, 2011; 91: 549-553.
  12. Mandilya A, NamboodiriN, Sreedharan SE, Sylaja . Sinus arrest complicating acute posterior cerebral artery stroke. Neurol India. 2011; 59:772-773.
  13. Lammers AE, Adatia I, Cerro MJ, Diaz G, Freudenthal AH, Freudenthal F, Harikrishnan S, Ivy D, Lopes AA, Raj JU, Sandoval J, Stenmark K, Haworth SG. Functional classification of pulmonary hypertension in children: Report from the PVRI pediatric taskforce, Panama 2011.Pulm Circ. 2011; 1:280-285
  14. Nair KK, Namboodiri N , Thajudeen A, Valaparambil AK, Tharakan JM. .An unusual mechanism of sustained right atrial tachycardia. Indian Pacing Electrophysiol J. 2011; 11:169-172.
  15. Nair KKM, Sivadasanpillai H , Thajudeen A, Tharakan JM, Titus T, Ajitkumar V, Sivasankaran S, Namboodiri N, Bijulal S, Sanjay G. Comparative Study on Safety, Efficacy and Midterm results of Balloon Mitral Valvotomy Performed with Triple Lumen and Double Lumen Mitral Valvotomy Catheters. Catheterisation and Cardiovascular Interventions , 2012 DOI: 10.1002/ ccd.24284
  16. Thajudeen A, Namboodiri N, Valaparambil AK, Nair KK, Tharakan JM.Unusual Response of an Accessory Atrioventricular Connection to Adenosine. J Cardiovasc Electrophysiol. 2012; 23: 223-224
Publications 2010-2011
  1. Bijulal.S, Nair K, Ajitkumar VK, Sivasankaran S, Tharakan JA. Long term clinical follow up of patients with double vessel coronary artery disease not involving left anterior descending artery. Kerala Heart Journal 2010;1.
  2. Bohora S, Namboodiri N, Dora S, AjitKumar V, Tharakan J. Mahaim fiber accelerated automaticity and clues to a mahaim fiber being morphologically an ectopic or a split AV node. Indian Pacing Electrophysiol J. 2010;10:62-66.
  3. Harikrishnan S, Bijulal S, Krishnakumar N, Ajithkumar VK. Combined mitral and pulmonary valvotomy with Inoue balloon in rheumatic quadrivalvular disease. J Heart Valve Dis. 2011;20:112-113.
  4. Harikrishnan S, Bimal F, Ajithkumar V, Bhat A, Krishnamoorthy KM, Sivasubramonian S, Titus T, Tharakan J. Percutaneous Treatment of Congenital Coronary Arteriovenous Fistulas. J Interv Cardiol. 2011;24:208-215
  5. Nair K, Harikrishnan S, Sivasubramonium P, Ramachandran P, Tharakan JA, Titus T, Ajitkumar VK, Sivasubramonian S, Krishnamoorthy KM, Dora S. Percutaneous valvuloplasty for mitral valve restenosis: postballoon valvotomy patients fare better than postsurgical closed valvotomy patients. Catheter Cardiovasc Interv. 2010;76:174-180.
  6. Namboodiri N. Bradycardia-induced torsade de pointes - An arrhythmia less understood. Indian Pacing Electrophysiol J. 2010;10:435-438.
  7. Namboodiri N. Electroanatomic contact mapping: how to use optimally to recognise the arrhythmiamechanism? Indian Pacing Electrophysiol J. 2010;10:1-7.
  8. Namboodiri N, Bohora S, Ajitkumar VK, Thrakan JA. Narrow complex tachycardia with ventriculoatrial dissociation- what is the mechanism? Pacing Clin Electrophysiol. 2011;34:756-759
  9. Sivadasanpillai H, Valaparambil A, Sivasubramonian S, Mahadevan KK, Sasidharan B, Namboodiri N, Thomas T, Jaganmohan T. Percutaneous closure of ruptured sinus of Valsalva aneurysms: intermediate term followup results. EuroIntervention 2010;6:214-219.
  10. Sivasankaran S. The cardio-protective diet. Indian J Med Res. 2010;132:608-616.


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