>I hope they think about "pump head" when they design the CABG trial. Is it known how much of that comes from too rapid rewarming (trading 15 IQ points for 15 minutes of theater time), and how much from microemboli? Also, is it known that the microemboli are actually clots rather than bubbles produced by cavitation? This is a chapter I haven't read yet, asking you guys for some guidance, maybe a recent review?