 Hello, I am Dr. Murli Krishna, Consultant Cardiac Surgeon at Manipal Hospital, Bangalore. Any surgical procedure required on the heart, which can be done in a regular conventional way, cutting the breastbone, can also be done in a minimal invasive way. Of course, the conditions and the diagnosis and the procedure required will vary. As in very small children who are having complex congenital heart disease, they will of course not be suitable candidates for minimal invasive surgery because their heart relations are much more complex and which requires a full sternotomy. But any other weight criteria like patients for more than 8 kgs who can undergo heart surgery through the sternotomy route can also be candidates for minimal invasive surgery.