if it got turned off, they would hook me up to a little thing-amajiggy. what else are we going to do now? wait until a heart comes, right? let s take a look, lie back. now the wait for a heart is soon an added urgency. how long could the heart pump hold out. because it was artificial it threw off little blood clots, which kept everyone watching, tense on edge. dr. david rosenthal is a cardiologist on the team treating the siblings. her lungs are over here, and this is her heart. her heart is much larger than it should be. how big should it be? we would expect it to fit in half the width of the lungs, it s closer to 2/3. so it s quite enlarged compared to what it should be. that s even with the berlin heart pump in place.