Hyderabad: Doctors at KIMS Hospital in Gachibowli have successfully performed a rare, robotic heart surgery on a 37-year-old man from Rajahmundry. The patient, an accountant for a prawn export company, had a severe condition called mitral stenosis caused by rheumatic heart disease. In his case, the valve had narrowed and thickened, slowing down blood flow and putting dangerous strain on his heart. How the surgery workedDr Nisarga, the chief cardiac surgeon who led the five-hour operation on July 23, explained how robotic surgery differs from standard open-heart operations:1. Robotic Surgery: Uses tiny, precise cuts or ‘keyholes’ between the ribs.