DM Cardiology, SCTIMST, Thiruvananthapuram, 2013-2015

MD Pediatrics, JIPMER, Puducherry, 2008-2011

MBBS, Government Medical College, Thiruvananthapuram, University of Kerala 2001 - 2007 (including internship)

Additional Professor, Division of Pediatric Cardiology, Department of Cardiology, SCTIMST, January 2023 till date

Associate Professor, Division of Pediatric Cardiology, Department of Cardiology, SCTIMST, September 2019 - December 2022

Assistant Professor, Cardiology, SCTIMST, September 2016 - August 2019

Assistant Professor (Ad-hoc), Cardiology, SCTIMST, January - August 2016

Kerala University 1st rank in MBBS Degree examination September 2006

Seven gold medals in MBBS for various subjects

First prize in All India level representing JIPMER at the 4th IAP Pediatric PG Quiz Competition 2010 - 11.

Multiple top prizes in statewide Cardiology quiz competitions (2014-15).

Pediatric Cardiac Interventions

Pediatric heart failure

Fetal echocardiography

Fontan

Works as part of the Pediatric cardiology team of SCTIMST. Does diagnostic and therapeutic cardiac interventions in children and adults with congenital heart diseases.

Works with the structural heart diseases team of the department in management of complex cardiac interventions.

Pediatric Cardiac Society of India

Indian Medical Association

Cardiological Society of India

Indian Academy of Pediatrics

Digoxin in patients with rheumatic heart disease - A randomised placebo-controlled trial. (No.50/4(1)/TF-CVD/SG/2021-NCD-I). ICMR funded. Principal Investigator.

Kerala Registry of Infective Endocarditis (KIND registry). Multicentric study. Principal investigator from SCTIMST.

Pulmonary Embolism Registry of Kerala (PERK). Multicentric study Principal investigator from SCTIMST.

Pediatric Pulmonary Hypertension in India Registry (Ped PHI Registry): A multicenter cross-sectional study and long term follow up of pediatric patients with pulmonary hypertension in India

Coronary artery Doppler in anomalous left coronary artery from pulmonary artery. Principal investigator

Role of novel biomarkers and clinical scoring systems in predicting progression to sepsis in infected post-cardiac surgery patients (BIOCASS study). Intramural funded project. Co-primary investigator.

Safety and efficacy of drug eluting stents for stenting patent arterial duct in neonates

Evaluation of intermediate term cardiac and neurodevelopmental outcomes of children undergoing corrective arterial switch operation for complete transposition of great arteries. Co-principal investigator.

Estimation study for reduction in transport of referral cases to tertiary hospitals by use of mobile enabled telemedicine system in remote hospitals. Principal investigator

Kerala Acute Heart Failure Registry Co primary investigator. Externally funded project. (TAC No. 444, IEC/894/April 2016).

Left ventricular regression after balloon atrial septostomy in d-transposition of great arteries.

Long term Outcomes of Bidirectional Glenn and Fontan procedures in a tertiary care cardiac centre in south India

Profile of Symptomatic Coronary Artery Disease in Patients Younger than 30 years of Age in South India.

Dr. Kakarla Sai Kiran, DM Cardiology. Speckle Tracking Echocardiography in post-surgical repair of Anomalous origin of the Left Coronary Artery from the Pulmonary Artery (ALCAPA)

Dr. Harikrishnan KN, DM Cardiology. Natural History and Outcomes of Bidirectional Glenn and Fontan procedures.

Course coordinator of Heart Failure Clinics - a monthly national level Case based training for DM/DNB Cardiology organized by Heart Failure Association of India

Faculty involved in Nurses training program in Pediatric cardiology and valvular heart diseases at SCTIMST

Cardiology consultant to Regional Cancer Center, Thiruvananthapuram 2017 - 2019

Organizing Secretary of a nation-wide conference: Complex ASD device closure - Learning with the Masters on 23rd April 2022.

Organizing Secretary of Chitra Fontan Summit 2019 (10th March 2019), a one day national level CME on the nuances of the univentricular heart. Organized by the Departments of Cardiology and Cardiac Surgery, SCTIMST, at Hotel Hycinth by Sparsa

Organizing Secretary of a grand Clinico-pathological conference on 3rd July 2021 with the Departments of Cardiology, Pathology and Imaging Sciences and Interventional Radiology, SCTIMST.

Pediatric Cardiology and Structural Heart Diseases Interventions

Arun Gopalakrishnan. ?Evaluation and diagnostic work up of Pediatric heart failure?. Manual of Heart Failure Management. Chapter 72 Jaypee Brothers. 2021;375-378. ISBN: 9789390595488

Arun Gopalakrishnan. ?Mitral regurgitation and heart failure?. Manual of Heart Failure Management. Chapter 44 Jaypee Brothers. 2021;206 ? 212. ISBN: 9789390595488

Arun Gopalakrishnan. ?Diagnostic cardiac catheterization and angiography?. In IAP Specialty Series in Pediatric Cardiology 3rd edition, Jaypee Brothers.

Arun Gopalakrishnan, Harikrishnan KN. ?Pulmonary and systemic venous anomalies?. In IAP Specialty Series in Pediatric Cardiology 3rd edition, Jaypee Brothers.

Arun Gopalakrishnan, Harikrishnan S. ?Mitral regurgitation?. In Tandon?s Textbook of Cardiology, Wolters Kluwer (India) Pvt Ltd January 2019

Harikrishnan S, Arun Gopalakrishnan ?Retrograde nontransseptal balloon mitral valvuloplasty? Percutaneous Mitral Valvotomy. 2nd Edition, New Delhi, Jaypee Brothers Medical Publishers, 2018; 394-398

Arun Gopalakrishnan, Mohammed A Sherif. ?Double balloon technique?. Percutaneous Mitral Valvotomy. 2nd Edition, New Delhi, Jaypee Brothers Medical Publishers, 2018; 232-238

Arun Gopalakrishnan, Vishnu Bhat. ?Retinopathy of prematurity? in ?Recent Advances in Pediatrics Special Volume ? 21, Neonatal and Pediatric Intensive Care?, Jaypee Publications.

Kurup HKN, Gopalakrishnan A, Sasikumar D, Krishnamoorthy KM. Safety of drug-eluting stents for stenting patent arterial duct in neonates. Cardiol Young. 2022 May 5;1-7. doi: 10.1017/S104795112200110X. Online ahead of print. https://pubmed.ncbi.nlm.nih.gov/35508431/

Kamanakeri D, Anoop A, Harikrishnan S, Gopalakrishnan A. Ascending aortic dissecting aneurysm with rupture into the right atrium associated with Covid-19. J Postgrad Med. 2022 Apr 11. doi: 10.4103/jpgm.jpgm_903_21. Online ahead of print. https://pubmed.ncbi.nlm.nih.gov/35417997/

Bhattacharya D, Sasikumar D, Gopalakrishnan A, Anoop A. Ventricular septal defect with pulmonary arterial hypertension in an infant: Is there something more than what meets the eye? Ann Ped Cardiol. Oct-Dec 2021;14(4):554-556. doi: 10.4103/apc.apc_226_20. Epub 2022 Mar 25. https://pubmed.ncbi.nlm.nih.gov/35527760/

Pandey HK, Gopalakrishnan A, Deepti AN, Radhakrishnan BK. An intracardiac pathology mimicking cardiac tamponade. Acta Cardiol Sin. 2022 Jan 1;38(1):93-95 https://doi.org/10.6515/ACS.202201_38(1).20210719A https://pubmed.ncbi.nlm.nih.gov/35068889/

Sambaturu K, Kurup HKN, Gopalakrishnan A, Krishnamoorthy KM. Chylotamponade in Pediatric Primary Mediastinal Large B-cell Lymphoma. Indian J Pediatr. 2022 Jan 14. https://doi.org/10.1007/s12098-021-03986-0

Sasikumar D, Gopalakrishnan A, Kurup HKN, Dharan BS. Percutaneous closure of giant aortic pseudoaneurysm in a child. J Invasive Cardiol. 2022;34(1):E65-E66. https://pubmed.ncbi.nlm.nih.gov/34982728/

Yadav H, Venkateshwaran S, Gopalakrishnan A, Tharakan JA, Kumar VKA. Use of pressure wire for measurement of pulmonary artery pressure across BT shunt in a child with pulmonary atresia. IHJ Cardiovascular Case Reports. 2021 Dec 4. https://doi.org/10.1016/j.ihjccr.2021.12.004

Sunil WR, Gopalakrishnan A, Sasidharan B, Krishnamoorthy KM, Sivasubramonian S. Progressive coarctation after device closure of arterial duct - Case report. IHJ Cardiovascular Case Reports. 2021 Oct 19. https://doi.org/10.1016/j.ihjccr.2021.10.007

Kurup HKN, Pandey HK, Gopalakrishnan A, Sivasubramonian S, Krishnamoorthy KM. M-mode echocardiography in an adolescent with heart failure. IHJ Cardiovascular Case Reports. 2021 Oct 18. ISSN 2468-600X, https://doi.org/10.1016/j.ihjccr.2021.10.009.

Ayyappan A, Gopalakrishnan A, Pitchai S. Concurrent coronary artery and subclavian arterial aneurysms in Takayasu arteritis. Egypt J Radiol Nucl Med. 2021;52:233. https://doi.org/10.1186/s43055-021-00621-y

Gopalakrishnan A, Menon S, Sasikumar D, Kurup HKN, Krishnamoorthy KM. Hemianomalous pulmonary venous drainage and type IIb coronary sinus septal defect - Utility of subxiphoid and right parasternal views. Echo. 2021 Sep 23. https://doi.org/10.1111/echo.15176 Epub ahead of print.

Kartik SV, Sasidharan B, Gopalakrishnan A, Kurup HKN, Krishnamoorthy KM, Sasikumar D, Thulaseedharan JV, Valaparambil A, Tharakan J, Sivasubramonian S. A Comparative Study of Invasive Modalities for Evaluation of Pulmonary Arteriovenous Fistula after Bidirectional Glenn Shunt. Pediatr Cardiol. 2021 Jul 31. doi: 10.1007/s00246-021-02670-6. Epub ahead of print. PMID: 34331559. https://pubmed.ncbi.nlm.nih.gov/34331559/

Ramanan S, Sundaram S, Gopalakrishnan A, Anija DV, Sandhya P, Jose DS, Baruah SD, Menon S, Dharan BS. Intermediate-term neurodevelopmental outcomes and quality of life after arterial switch operation. Eur J Cardiothorac Surg 2021 Jun 21;ezab223. doi: 10.1093/ejcts/ezab223. Online ahead of print. https://pubmed.ncbi.nlm.nih.gov/34151942/

Ponnambath DK, Gopalakrishnan A, Pillai VV, Kaviyil JE, Raja K. Clinical Profile of Prosthetic Valve Endocarditis (PVE) due to Candida parapsilosis: A 11-year Retrospective Observational Study from a Quaternary Cardiac Referral Institute in India. Indian Journal of Critical Care Medicine. 2021;10.5005/jp-journals-10071-23915

Kartha GB, Gopalakrishnan A, Mohanan Nair KK, Krishnamoorthy KM. Question and answer scheme: Heart failure in a patient with prosthetic aortic valve. IHJ Cardiovascular Case Reports. https://doi.org/10.1016/j.ihjccr.2021.05.005. https://www.sciencedirect.com/science/article/pii/S2468600X21000165

Walad S, Harikrishnan KN, Gopalakrishnan A, Sivasubramonian S, Sasidharan B. Technical considerations of coarctation stenting in double barreled aorta - a persistent fifth arch mimic. Ann Pediatr Card Apr-Jun 2021;14(2):201-203. doi: 10.4103/apc.APC_159_20. Epub 2021 May 3. https://pubmed.ncbi.nlm.nih.gov/34103860/

Gopalakrishnan A, Krishnamoorthy KM, Sivasubramonian S, Valaparambil A. Percutaneous device closure of an aorto-right ventricular outflow tract fistula after Bentall repair. Acta Cardiol. 2020 Dec 10;1-2. doi: 10.1080/00015385.2020.1824739. Online ahead of print. https://pubmed.ncbi.nlm.nih.gov/33300433/

Raja J, Menon S, Mohammed S, Ramanan S, Baruah SD, Gopalakrishnan A, Sasi Dharan B. Correction to: Midterm results of homografts in pulmonary position: a retrospective single-center study. Indian J Thorac Cardiovasc Surg 2021 Mar;37(2):138-139. doi: 10.1007/s12055-020-01116-7. Epub 2020 Dec 11. https://pubmed.ncbi.nlm.nih.gov/33645591/

Gopalakrishnan A, Krishnamoorthy KM, Suresh Kumar P, Ramanan S, Sivasubramonian S. Oscillating Ductal stent in Valvar Pulmonary Atresia. Arq Bras Cardiol 2020 Nov;115(5):961-963. doi: 10.36660/abc.20190829. https://pubmed.ncbi.nlm.nih.gov/33295466/

Raja J, Menon S, Mohammed S, Ramanan S, Baruah SD, Gopalakrishnan A, Sasi Dharan B. Midterm results of homografts in pulmonary position: a retrospective single-center study. Indian J Thorac Cardiovasc Surg 2021 37, 129???137. https://doi.org/10.1007/s12055-020-01065-1

Gopalakrishnan A, Harikrishnan S, Sanjay G, Mohanan Nair KK Sivasubramonian S, Valaparambil A. Clinical profile & long-term natural history of symptomatic coronary artery disease in young patients (<30 yr). Indian J Med Res 2020 Sep;152(3):263-272. doi: 10.4103/ijmr.IJMR_1090_18 https://pubmed.ncbi.nlm.nih.gov/33107486/

Gopalakrishnan A, Sasidharan B, Menon S, Krishnamoorthy KM. Drug-eluting stent for acute Blalock-Taussig shunt thrombosis in a child???case report. Egypt Heart J 2020 Dec; 72: 54 Published online 2020 Aug 26. https://doi.org/10.1186/s43044-020-00084-y https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7447713/

Raja J, Menon S, Ramanan S, Baruah SD, Devarakonda BV, Gopalakrishnan A, Dharan BS. Bi-ventricular repair of Double Outlet Left ventricle - Experience and Review of Literature. J Card Surg. 2020 Aug;35(8):1865-1870. doi: 10.1111/jocs.14768. Epub 2020 Jul 11. https://pubmed.ncbi.nlm.nih.gov/32652736/

Sasikumar D, Sasidharan B, Rashid A, Ayyappan A, Gopalakrishnan A, Krishnamoorthy KM, Sivasubramonian S. Early and late outcome of covered and non-covered stents in the treatment of coarctation of aorta ??? a single centre experience. Indian Heart Journal. 2020 Volume 72(4), July???August 2020, 278-282 https://doi.org/10.1016/j.ihj.2020.06.012

Nair KKM, Valaparambil A, Sasidharan B, Ganapathi S, Gopalakrishnan A, Namboodiri N, Sivadasanpillai H. Immediate, early and mid-term outcomes following balloon mitral valvotomy in patients having severe rheumatic mitral stenosis without significant tricuspid regurgitation. Indian J Thorac Cardiovasc Surg 2020 Sep;36(5):483-491. doi: 10.1007/s12055-020-01012-0. Epub 2020 Jul 27. https://pubmed.ncbi.nlm.nih.gov/33061159/

Behera DR, Ajit Kumar VK, Namboodiri N, Sivasankaran S, Nair KKM, Sanjay G, Kapilamoorthy TR, Gopalakrishnan A, Harikrishnan S. Prognostic value of late gadolinium enhancement in cardiac MRI of non-ischemic dilated cardiomyopathy patients. Indian Heart Journal. Sep-Oct 2020;72(5):362-368. doi: 10.1016/j.ihj.2020.06.011. Epub 2020 Jul 2. https://pubmed.ncbi.nlm.nih.gov/33189195/

Mani A, Gopalakrishnan A, Krishnamoorthy KM. Fixed and dynamic obstruction in double chambered right ventricle. Acta Cardiol. 2020 Jun 8;1-2. doi: 10.1080/00015385.2020.1774180. Online ahead of print. https://pubmed.ncbi.nlm.nih.gov/32507052/

Kotera SS, Gopalakrishnan A, Raja J, Sivasubramonian S, Menon S. Valentine on a Crab - Type A Interrupted Aortic Arch with Type 2 Aortopulmonary Window. Echocardiography. 2020 Mar;37(3):474-475. doi: 10.1111/echo.14608. Epub 2020 Feb 12. https://pubmed.ncbi.nlm.nih.gov/32049371/

Poonia A, Giridhara P, Gopalakrishnan A. Cardiac Rhabdomyoma Causing Progressive Dynamic Severe Right Ventricular Outflow Tract Obstruction in an Infant. Indian Pediatrics 2020 Feb 15;57(2):179-180. https://www.ncbi.nlm.nih.gov/pubmed/32060249

Rajendran P, Thankamony P, Nair M, Sojamani GC, Vasudevan J, Gopalakrishnan A. Chronic eosinophilic leukaemia NOS transforming to B Lymphoblastic Leukaemia presenting as Myocardial Infarction in a child. Pediatr Hematol Oncol J 2019;4:S24-S31 https://doi.org/10.1016/j.phoj.2019.08.086

Gopalakrishnan A, Pillai VV. Regional cardiac tamponade. Indian J Med Res 2019 Sep; 150(3): 312. doi: 10.4103/ijmr.IJMR_1851_17 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6886137/

Mohanan Nair KK, Ganapathi S, Gopalakrishnan A, Valaparambil A. Prominent CV wave in severe tricuspid regurgitation. Natl Med J India 2018 Sep-Oct;31(5):310. DOI: 10.4103/0970-258X.261181 https://www.ncbi.nlm.nih.gov/pubmed/31268005

Mani A, Gopalakrishnan A, Anoop A, Valaparambil A. Image of the month: Ventricular myxoma mimicking hypertrophic cardiomyopathy. Clin Med. March 2019 19:131-132; doi:10.7861/clinmedicine.19-2-131. https://www.ncbi.nlm.nih.gov/pubmed/30872295

Gopalakrishnan A, Mohanan Nair KK, Namboodiri N, Valaparambil A. The Heart in an Eggshell. Natl Med J India. 2018 Mar-Apr;31(2):123. doi: 10.4103/0970-258X.253170. https://www.ncbi.nlm.nih.gov/pubmed/30829236

Gopalakrishnan A, Sivasubramonian S, Valaparambil A. The mysterious ???double??? arch. Echocardiography. 2019 Feb;36(2):422-423. doi: 10.1111/echo.14253. Epub 2019 Jan 9 https://www.ncbi.nlm.nih.gov/pubmed/30628131

Gopalakrishnan A, Krishnamoorthy KM, Sivasubramonian S. Balloon atrial septostomy at the bedside versus the catheterisation laboratory. Cardiol Young. 2019 Mar;29(3):454. doi: 10.1017/S1047951118002214. Epub 2019 Jan 28. https://www.ncbi.nlm.nih.gov/pubmed/30688192

Mohanan Nair KK, Valaparambil A, Sasidharan B, Ganapathi S, Gopalakrishnan A, Namboodiri N, Sivasubramanian S, Sivadasanpillai H. Immediate and late clinical outcomes of BMV, based on the post BMV mitral valve area & percentage increase in mitral valve area ??? A tertiary center study. Indian Heart Journal. 2018 Dec;70 Suppl 3:S338-S346. doi: 10.1016/j.ihj.2018.09.005. Epub 2018 Oct 6 https://www.ncbi.nlm.nih.gov/pubmed/30595286

Nair KK, Ganapathi S, Inamdar S, Gopalakrishnan A, Kapilamoorthy TR, Valaparambil A. Incidentally detected right aortic arch with mirror image branching in a patient with rheumatic calcific mitral valve disease. Natl Med J India. 2018 Jan-Feb;31(1):22-23. doi: 10.4103/0970-258X.243408. https://www.ncbi.nlm.nih.gov/m/pubmed/30348918/

Sasikumar D, Sasidharan B, Ayyappan A, Gopalakrishnan A, Krishnamoorthy KM. Coronary-to-pulmonary artery collaterals in pulmonary atresia. Ann Pediatr Cardiol. 2018 Sep-Dec;11(3):328-329. doi: 10.4103/apc.APC_29_18. https://www.ncbi.nlm.nih.gov/pubmed/30271029

Gopalakrishnan A, Krishnamoorthy KM, Valaparambil A. Hemodynamic vise in obstructed total anomalous pulmonary venous connection. J Echocardiogr. 2019 Sep;17(3):164-166. doi: 10.1007/s12574-018-0392-6. Epub 2018 Aug 13. https://www.ncbi.nlm.nih.gov/pubmed/30105477

Kartik SV, Gopalakrishnan A, Deepti AN, Mohanan Nair KK, Pillai VV, Valaparambil A. Left ventricular myxoma with dynamic left ventricular outflow tract obstruction. Postgrad Med J. 2018 Dec;94(1118):725-726. doi: 10.1136/postgradmedj-2018-135877. Epub 2018 Jul 24. https://www.ncbi.nlm.nih.gov/pubmed/30042183

Mohanan Nair KK, Gopalakrishnan A, Valaparambil A. Respirophasic desaturation in multivalvar rheumatic heart disease. Acta Cardiol. 2019 Jun;74(3):265-266. doi: 10.1080/00015385.2018.1473831. Epub 2018 Jun 17 https://www.ncbi.nlm.nih.gov/pubmed/29909737

Gopalakrishnan A, Mohanan Nair KK, Ganapathi S. Haemodynamic challenge in non-restrictive atrial septal defect. Heart Asia. 2018 May 17;10(2):e011014. doi: 10.1136/heartasia-2018-011014. eCollection 2018. https://www.ncbi.nlm.nih.gov/pubmed/29868130

Sivasubramonian S, Gopalakrishnan A, Sasidharan B, Valaparambil A. Role of diastology in transcatheter aortic valve implantation. J Invasive Cardiol. 2018 Mar;30(3):E23-E24. https://www.ncbi.nlm.nih.gov/pubmed/29493515

Sasikumar D, Dharan BS, Arunakumar P, Gopalakrishnan A, Sivasankaran S, Krishnamoorthy KM. The outcome of mitral regurgitation after the repair of anomalous left coronary artery from the pulmonary artery in infants and older children. Interact CardioVasc Thorac Surg 2018 Aug 1;27(2):238-242. doi: 10.1093/icvts/ivy022. https://www.ncbi.nlm.nih.gov/pubmed/29528421

Mohanan Nair KK, Namboodiri N, Gopalakrishnan A, Valaparambil A. Radiofrequency ablation of premature ventricular contractions originating from uncommon sites of right ventricle. Indian Pacing Electrophysiol J. 2018 Mar - Apr;18(2):84-86. doi: 10.1016/j.ipej.2018.02.001. Epub 2018 Feb 13. https://www.ncbi.nlm.nih.gov/pubmed/29452255

Krishnamoorthy KM, Gopalakrishnan A. Cost-effectiveness analysis of devices for closure of patent ductus arteriosus. Ann Pediatr Card 2018;11:109. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5803965/

Sivasubramonian S, Gopalakrishnan A, Sasikumar D, Krishnamoorthy KM. Improving outcomes in totally anomalous systemic venous connection. Ann Pediatr Card. 2018;11:116-7. https://www.ncbi.nlm.nih.gov/pubmed/29440849

Gopalakrishnan A, Subramanian V, Sasidharan B, Sasikumar D, Krishnamoorthy KM, Dharan BS, Valaparambil A. A Rare Variant of Intracardiac Total Anomalous Pulmonary Venous Connection. Rev Port Cardiol. 2017 Nov;36(11):869.e1-869.e4. doi: 10.1016/j.repc.2017.03.009. Epub 2017 Nov 8. https://www.ncbi.nlm.nih.gov/m/pubmed/29128137

Gopalakrishnan A, Sasidharan B, Tharakan J, Valaparambil A. Left atrial outflow obstruction in double outlet right atrium. Asian Cardiovasc Thorac Ann. 2018 Jan;26(1):50-53. doi: 10.1177/0218492317736962. Epub 2017 Oct 8. https://www.ncbi.nlm.nih.gov/pubmed/28988491

Mohanan Nair KK, Namboodiri N, Gopalakrishnan A, Abhilash SP, Valaparambil A. An unusual cause of heart failure in a young man. J Electrocardiol. 2018 Mar - Apr;51(2):335-337. doi: 10.1016/j.jelectrocard.2017.09.015. Epub 2017 Oct 5. https://www.ncbi.nlm.nih.gov/pubmed/29103620

Ayyappan A, Gopalakrishnan A, Kapilamoorthy TR. Partially Anomalous Pulmonary Venous Connection to Solitary and Persistent Left Superior Caval Vein in Usual Visceroatrial Arrangement. World J Pediatr Congenit Heart Surg. 2020 Jul;11(4):NP88-NP90. doi: 10.1177/2150135117719861. Epub 2017 Sep 27. https://www.ncbi.nlm.nih.gov/pubmed/28954588

Gopalakrishnan A, Ganapathi S, Nair KKM, Sivadasanpillai H, Valaparambil A. Coronary Artery Ectasia - The Need for an Expanded Classification. J Assoc Physicians India. 2017 Jul;65(7):116. https://www.ncbi.nlm.nih.gov/pubmed/28792184

Krishnamoorthy KM, Gopalakrishnan A, Kumar DS, Sivasankaran SS. Eustachian valve-Masquerading ASD rim. Indian Heart J. 2017 May - Jun;69(3):422-423. doi: 10.1016/j.ihj.2017.04.011. Epub 2017 Apr 26. https://www.ncbi.nlm.nih.gov/pubmed/28648449

Arun Gopalakrishnan. Atrial Septal Defect - Systematic Assessment Prior to Device Closure. Kerala Journal of Cardiology. 2017 Sep;1:61-68

Gopalakrishnan A, Krishnamoorthy KM, Mohanan Nair KK, Valaparambil A. Management of patients with transposition of the great arteries and intact interventricular septum. Eur J Cardiothorac Surg. 2017 Jul 1;52(1):201. doi: 10.1093/ejcts/ezx109. https://www.ncbi.nlm.nih.gov/pubmed/28444376

Sasikumar D, Sasidharan B, Dharan BS, Gopalakrishnan A, Krishnamoorthy KM, Sivasankaran S. Quantification of ventricular unloading by 3D echocardiography in single ventricle of left ventricular morphology following superior cavo-pulmonary anastomosis and Fontan completion ??? a feasibility study. Ann Pediatr Card. 2017 Sep-Dec;10(3):224-229. doi: 10.4103/apc.APC_12_17. https://www.ncbi.nlm.nih.gov/pubmed/28928606

Gopalakrishnan A, Sivadasanpillai H, Krishnamoorthy KM, Kapilamoorthy TR, Valaparambil A, Tharakan J. Aorto-Right Ventricular Outflow Tract Fistula after Bentall Repair. Acta Cardiologica 2017 Jun;72(3):351-352. doi: 10.1080/00015385.2017.1304722. Epub 2017 Mar 21. https://www.ncbi.nlm.nih.gov/pubmed/28636507 Impact factor 0.653

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 great arteries. Eur J Cardiothorac Surg. 2016 Dec;50(6):1096-1101. doi: 10.1093/ejcts/ezw206. Epub 2016 Jun 14. Impact factor 3.304. http://www.ncbi.nlm.nih.gov/pubmed/27307481

Gopalakrishnan A, Sanjay G, Mohanan Nair KK, Sivadasanpillai H, Valaparambil A. Deleterious effects of isolated right ventricular pacing in right ventricular myocardial infarction. Int J Cardiol. 2016 Nov 1;222:995-996. DOI: http://dx.doi.org/10.1016/j.ijcard.2016.08.015 www.ncbi.nlm.nih.gov/pubmed/27526381

Gopalakrishnan A, Sivasubramonian S, Kapilamoorthy TR, Ajitkumar VK. Massive left main coronary aneurysm presenting as trepopnea. Acta Cardiol 2016 Aug;71(4):495-496. doi: 10.2143/AC.71.4.3159706. Impact factor 0.653 https://www.ncbi.nlm.nih.gov/pubmed/27594368

Gopalakrishnan A, Mohanan Nair KK, Sivadasanpillai H, Valaparambil A. An unusual case of persistent severe pulmonary hypertension following balloon mitral valvuloplasty. J Heart Valve Dis. 2016 Mar 16;25(2):195-197. Impact factor 0.752 https://www.ncbi.nlm.nih.gov/pubmed/27989066

Mohanan Nair KK, Gopalakrishnan A, Ganapathi S , Harikrishnan S, Valaparambil A, Tharakan J. Arterial discordance in cardiac tamponade. J Invasive Cardiol. 2016 Oct 28(10):E124-125. Impact factor 0.949 https://www.ncbi.nlm.nih.gov/pubmed/27705896

Krishnamoorthy KM, Bijulal S, Gopalakrishnan A. Severe aortic regurgitation during percutaneous closure of ventricular septal defect. Int J Cardiol. 2016 Jul 15;215:435. doi: 10.1016/j.ijcard.2016.04.039. Epub 2016 Apr 14. http://www.ncbi.nlm.nih.gov/pubmed/27131265 Impact factor - 4.036

Sasikumar D, Krishnamoorthy KM, Sivasubramanian S, Gopalakrishnan A, Behera D. Anomalous venous drainage: a rare case of cyanosis. Eur Heart J Cardiovasc Imaging. 2016 Sep;17(9):977. doi: 10.1093/ehjci/jew107. Epub 2016 May 25. Impact factor 4.105. http://www.ncbi.nlm.nih.gov/pubmed/27225806

Gopalakrishnan A, Sasidharan B, Krishnamoorthy KM. Balloon Atrial Septostomy in Congenital Heart Disease - Letter to the Editor. Circ J. 2016 Mar 25;80(4):1050. doi: 10.1253/circj.CJ-16-0008. Epub 2016 Mar 8. http://www.ncbi.nlm.nih.gov/pubmed/26960754 Impact factor 3.94

Gopalakrishnan A, Kumar M, Krishnamurthy S, Sakamoto O, Srinivasan S. Fanconi???Bickel syndrome in a 3-year-old Indian boy with a novel mutation in the GLUT2 gene. Clin Exp Nephrol. 2011 Oct;15(5):745-8. doi: 10.1007/s10157-011-0456-7. Epub 2011 May 31. http://www.ncbi.nlm.nih.gov/pubmed/21625891 Impact factor 2.02

Gopalakrishnan A, Ganapathi S, Sivasubramonian S, Sivadasanpillai H. Partial Papillary Muscle Rupture Following Percutaneous Mitral Valvuloplasty without Mitral Regurgitation. J Echocardiogr. 2016 Jun;14(2):81-2. doi: 10.1007/s12574-016-0278-4. Epub 2016 Feb 12. http://www.ncbi.nlm.nih.gov/pubmed/26872881

Mohanan Nair KK, Gopalakrishnan A, Avinash Inamdar S, Valaparambil A, Kapilamoorthy TR, Tharakan J. Malignant anomalous right coronary artery associated with mid-cavitary hypertrophic obstructive cardiomyopathy. Postgrad Med J. 2016 May;92(1087):306. doi: 10.1136/postgradmedj-2015-133847. Epub 2016 Feb 1. Impact factor 1.633 http://www.ncbi.nlm.nih.gov/pubmed/26831321

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 hemodynamic manifestation of low cardiac output states. Clin Med (Lond). 2016 Jun;16(3):297-8. doi: 10.7861/clinmedicine.16-3-297. http://www.ncbi.nlm.nih.gov/pubmed/27251925 Impact factor 1.695

Krishnamoorthy KM, Gopalakrishnan A, Sivasankaran SS. Percutaneous Closure of Atrial Septal Defects with Deficient Rims. Cardiology. 2016;135(1):48-9. doi: 10.1159/000446179. Epub 2016 May 31. http://www.ncbi.nlm.nih.gov/pubmed/27241516 Impact factor 2.177

Mohanan Nair KK, Namboodiri N , Banavalikar N, Gopalakrishnan A, Prasad S, Valaparambil A, Tharakan J. Iatrogenic pneumopericardium after pericardiocentesis. J Invasive Cardiol. 2016 Dec;28(12):E225-E226. https://www.ncbi.nlm.nih.gov/pubmed/27922814

Krishnamoorthy KM, Gopalakrishnan A, Namboodiri N. First direct evidence of a Patent Foramen Ovale (PFO): a thrombus straddling the foramen ovale. RE: Thrombus straddling the foramen ovale. European Heart Journal. Published on 7th April 2016. Impact factor 15.203

Gopalakrishnan A, Harikrishnan S, Ganapathy S, Tharakan J, Titus T. APSC2015-1232 Profile of Symptomatic Coronary Artery Disease in Patients Younger Than 30 Years in South India. Glob Heart. 2015 Jun;10(2, Supplement):e5. http://dx.doi.org/10.1016/j.gheart.2015.03.018

Gopalakrishnan A, Panneerselvam S, Kapilamoorthy TR, Ajitkumar VK. Cardiac MRI in Rheumatic Heart Disease Patients with Significant Left Ventricular Dysfunction. Indian Heart J 2014;66:S141-2

Gopalakrishnan A, Mahadevan S, Mandal J. An unusual cause of shock in pediatrics. Indian Journal of Emergency Pediatrics 2010;2(1):39-43

Sriram P, Arumugaswamy S, Mondal N, Chaudary B, Arun GK. Wilson???s disease with Heterotaxy syndrome: A Case Report. Curr Pediatr Res 2010;14(2):145???6

Sriram P, Gaurav A, Arun GK, Suresh R, Prakash V. Gastro esophageal reflux disease with bronchiectasis and aspergillosis. Curr Pediatr Res 2010;14(2):81???2. http://www.currentpediatrics.com/articles/gastro-esophageal-reflux-disease-with-bronchiectasis-and-aspergillosis.pdf

Journal of the American College of Cardiology

International Journal of Cardiology

Catheterization and Cardiovascular Interventions

European Journal of Cardio-Thoracic Surgery

Plos-One

Interactive CardioVascular and Thoracic Surgery

Cardiology

Echocardiography

Acta Cardiologia Sinica

Annals of Pediatric Cardiology

Indian Heart Journal