Dr. Po-Yen Ko specializes in general cardiovascular diseases, especially heart failure, cardiac ultrasound, and cardiac catheterization. Transcatheter cardiopulmonary interventional therapy include: 1) coronary balloon dilation and stent placement, 2) carotid artery and peripheral vascular treatment. The development of cardiac catheterization has led to the advancement of cardiovascular medicine and created many alternatives to surgery to reduce the suffering of patients with cardiovascular diseases and prolong the life of patients more effectively