Deliberate hypotension with nitroprusside produced a 40% reduction in mean arterial pressure, but it did not cause any change in the pulmonary deadspace to tidal volume ratio ( Vb/ Vr). This was achieved by adequate hydration both before and during hypotension, as indicated by constant filling pressures. Thus we have shown that deliberate hypotension per se does not increase Vb/ VT, and that va...

Enflurane was substituted for halothane in an established technique of controlled hypotension, involving beta-blockade and sympathetic ganglion blockade, for 2 groups of patients. One group was undergoing major plastic surgery and/or major maxillo-facial surgery and these patients breathed spontaneously. The other group was undergoing major neurosurgery and received intermittent positive pressu...

background : one of the most prevalent side effects of hemodialysis is intradialytic hypotension and its symptoms. using sodium profiles 3 and ultra filtration profile 3 and cold dialysate are the ways to overcome this problem. since none of these methods could control this complication lonely, this study was done to investigate the effect of combination of two methods on intradialytic hypotens...