"Clearly it’s important not to injure the septum during operations. So why is it happening repeatedly? ...[L]ikely ...improper myocardial protection (the technique used to protect the heart... that was my initial major medical discovery and quickly adopted worldwide). We... tested 119 consecutive patients and found no septum damage when protection was done correctly. ...Successful protection involves ...the cardioplegic solution and adopting a correct delivery strategy. ...[I]f surgeons are to prevent the all-too-frequent injury to the heart’s vital septum, they must avoid taking shortcuts that compromise this essential combination."