- Testimonials Dr. Ritwick Video Testimonials If you got any questions related to Cardiac Surgery, please do not hesitate to send us a message. We aim to reply within 1 hour! In Conversation with Dr. Vivek Rao and Dr. Ritwick Bhuyan Aortic Aneurysm – Successfully Treated Aorta – Restored from 12.5 to 2.5cmI Max Hospital, Patparganj Dr Ritwick Raj Bhuyan Saved Life of Mr Joel, Fought with Coronary Heart Disease Heart Surgery by Dr. Ritwick Raj Bhuyan of an HIV Positive Patient at Max Hospital, Delhi Patient Story: Mr. Dilshod, A Famous Comedian – Uzbekistan Mr. Khusan Musabaev Cardiac Surgery Story by Dr. Ritwick Raj Bhuyan Max PPG Super Specialty