Just wondering if anyone else does this. working with one of the super smart attendings the other day. 60 something year old man for routine knee surgery. GA with ETT. About a 1/4 the way through when blood pressure just isn't pleasing. Start titrating in the neo - fixed the problem but, of course having to push it every so often. My attending goes, "give him 1g of Ca++". Did as told and asked why but, he said it works every time but, wasn't exactly sure of any evidence. It worked perfectly - blood pressure came up and I didn't have to use the neo. I've used this three times since then and it's worked quite nicely. Did a quick search and couldn't really find much so, I was curious if anyone else has heard of this or used it. I'm sure it has something to do with the contractility of the heart muscle but, would like to hear some other thoughts.