on call last night. got a call around 330am for an emergent C2-T1 fx repair. make a long story short, coordinator strolls in room around 0650, looks at my machine, and without even looking at me, asks why i have pt on peep (of 5). i was a little dumbfounded and mildly speechless at the moment. after flexing my eyebrows a few times, i merely said something to the effect of physiologic peep, and why not. there was no contraindication, and patient had h/o smoking. he mumbled something about 'return', of which i could not catch, but assumed venous return. pt was not CV compromised, and no unfortuitous events occurred. am i missing something here? do you guys routinely use peep?