Indication : IABP is commonly used to supporting failing left ventricle after open-I1ca1-t surgery or in cardiogenic shock after myocardial infarction. It is at times used in unstable angina and as a supportive measure for urgent PTCA or revascullarization. In patients with post infarction ventricular septal defect and haemo dynamic instability, IABP is indicated before surgery.