Comparison of results of percutaneous balloon mitral valvotomy using consecutive single (25 mm) and double (25 mm and 12 mm) balloon techniques.

Abstract This report compares the results achieved in the same patients by consecutive single balloon mitral valvotomy, using the largest commercially available balloon catheter of 25 mm diameter, and double balloon valvotomy, using 25 + 12 mm diameter balloon catheters.