NB: From my understanding, partial birth abortion is only (or should only legally be) performed when the mothers life is in danger or the baby is severly or fatally disabled. From what I've read the baby is - or rather can be - alive at the point of abortion, although I somehow doubt the term 'sucked out brains' is medically accurate rather than being chosen for emotive value (as is the term 'partial birth abortion'; the medical term is "Intact Dilation and Extraction", which can also refer IIRC to the removal of a dead foetus..
FYI Clinton veto-ed the 2 partial-birth bills as they made no provision for the mothers health. Now, I'll admit not to being a doctor, but surely if the child cannot be delivered early and survive, and carrying the child will kill the mother and the child as a consequence, then it should ethical to perform the procedure.