Therapeutic cardiac catheterization is a minimally invasive procedure that involves inserting a long, thin tube through a blood vessel to reach the heart. Dr Gaurav Kumar uses this technique to treat congenital heart defects in both children and adults, including valve abnormalities, septal defects, and vascular narrowing. At Yashoda Medicity, this approach reduces the need for open-heart surgery, leading to faster recovery, shorter hospital stay, and fewer complications.