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Sorry for picking up an ended topic ..i just joined in y'day and so was going thru the stuff. I appreciate the adequate management of the patient that is already on the way. Apart from the vitals, to discuss the theory of permissive hypotension, I would like to look for the ongoing bleeding status of the patient. And i think, still keeping a MAP in the range of 75mm Hg would suffice during his ambulance transfer and if the patient is going to b shifted to the OT soon in view of bleeding. Why would u want to keep him hypotensive if there's no active bleeding and infact as Imron suggested, keep his urine output going well and keep him on the normotensive side with IV crystalloids and CVP monitoring.