🧑‍⚕️ Dr. Krishna Subramony Iyer
Senior Consultant – Paediatric & Adult Cardiac Surgery
Program Clinical Director – Marengo Asia Hospitals, Faridabad/Gurugram

Dr. Krishna Subramony Iyer is a globally respected cardiac surgeon with over 35 years of experience in paediatric and adult congenital heart surgery. Known for pioneering neonatal and infant cardiac surgery in India, he has performed thousands of complex heart procedures with exceptional outcomes. As Program Clinical Director at Marengo Asia Hospitals, he leads advanced cardiac programs across Faridabad and Gurugram. Dr. Iyer is widely published, a frequent international speaker, and a passionate advocate for affordable cardiac care. His dedication, innovation, and leadership have transformed congenital heart care in India and inspired generations of cardiac surgeons worldwide.

🩺 Areas of Expertise

• One of India’s foremost pediatric cardiac surgeons, Dr. Iyer initiated Northern India’s first exclusive pediatric cardiac care program in 1995.

• He has independently performed over 10,000 complex congenital heart surgeries, covering a wide range of conditions such as:

  • Arterial switch operation

  • Double-switch procedures

  • TAPVC repairs

  • Fontan and Glenn shunts

  • Tetralogy of Fallot (TOF) corrections

  • DORV (Double Outlet Right Ventricle)

  • Truncus arteriosus repair

🚀 Innovations and Milestones

• Introduced and successfully executed rapid two-stage arterial switch operations and double-switch procedures in India.

• Known for performing high-risk neonatal cardiac surgeries, especially on low-weight and malnourished infants.

• Focused on creating cost-effective cardiac care models suitable for resource-constrained settings.

🎓 Education & International Training

• MBBS, MS (General Surgery), M.Ch. (Cardiothoracic Surgery) from the prestigious All India Institute of Medical Sciences (AIIMS), New Delhi

• Completed an advanced Fellowship in Neonatal Cardiac Surgery at the Royal Children’s Hospital, Melbourne (1989), training under world-renowned pediatric heart surgeon Dr. R.B.B. Mee

👨‍⚕️ Career Journey

• Started his career at AIIMS, New Delhi, and later became an Additional Professor in the Department of Cardiothoracic Surgery.

• He established and currently leads the Pediatric Cardiac Program at Fortis Escorts, one of the busiest and most reputed units in Asia.

• Served as the Founding President of:

  • The Pediatric Cardiac Society of India

  • The Asia-Pacific Pediatric Cardiac Society

🏅 Awards & Distinctions

• Institute Gold Medal – MBBS

• Hira Lal Gold Medal – General Surgery

• Pfizer Postgraduate Award

• Sorel Catherine Frieman Prize – Pediatrics

• Best Paper Award in echocardiography (Washington DC, 1994)

• Honored as a Paul Harris Fellow by Rotary International for humanitarian service

📚 Academic & Professional Contributions

• Editor-in-Chief: Indian Journal of Thoracic and Cardiovascular Surgery

• Active member of:

  • Indian Association of Cardiovascular and Thoracic Surgeons (IACTS)

  • Pediatric Cardiac Society of India (PCSI)

  • World Society for Pediatric and Congenital Heart Surgery