Abstract
We evaluated the indications and limitations of IABP support for weaning for pump and postoperative heart failure after artificial valve replacement. Driving IABP as cardiac support in cases of acute cardiac failure during and after operation, it is most effective for transient cardiac failure-associated coronary artery spasms during and post operation, but it is not effective and is indeed limited for patients who need long term extracorporeal circulation because of operative technical failure, insufficient cardioplegia and delayed right ventricular failure after operation. The latter groups, in which IABP is insufficiently effective need additional assist devices such as V-A bypass and ventricular assist device (VAD).