A HAND-BULB PUMP (NORMALLY USED TO PROVIDE EMERGENCY PNEUMATIC POWER TO A VENTRICULAR ASSIST DEVICE) WAS BEING USED IN THE OPERATING ROOM DURING IMPLANTATION, TO HAND PUMP THE VAD PRIOR TO ATTACHMENT TO THE PNEUMATIC DRIVER. THE USER HEARD A POPPING SOUND AND A HOLE WAS NOTED IN THE CIRCUMFERENCE OF THE BULB. ANOTHER HAND BULB WAS CONNECTED TO THE VAD AND THERE WAS NO EFFECT ON THE PT.