2 of the major fears any surgeon has before an operation is that of OT infection and cardiac (heart) complications during or after the operation. If OT infections occur or the patient develops cardiac problems even the best surgeon cannot help you. DESUN is the only hospital in Kolkata to have Steel Operation Theatre (OT), which drastically reduces chances of OT infection and fully functional for 24×7. Also DESUN has the largest Heart Institute in Kolkata with all infrastructure to handle Cardiac problems during or after operation. The wide variety of over 700 types of surgeries done at DESUN Hospital, Kolkata, India include: