What are the indications for surgery in a case of aortic?

In this video, Dr. Sameer Shrivastava, Heads the department of Non-Invasive Cardiology at Fortis Escorts Heart Institute, New Delhi, will talk on the case of aortic stenosis. In case of severe aortic stenosis and the patient is asymptomatic, then they do not need surgery. Severe aortic stenosis with symptomatic patients are the candidates for surgery or valve replacement. 

Dr. Sameer will also discuss that even in moderate aortic stenosis and symptomatic patients, surgery or valve replacement is suggested. He will also explain a new method known as TAVI (Transcatheter aortic valve implantation), recently introduced for the intervention of aortic stenosis. It is a procedure like angioplasty or angiography. He will tell the advantages and disadvantages of the procedure TAVI.