A thermal diffusion flow probe which gave a continuous, dynamic, quantitative record of cortical blood flow (CBF) was used to assess CBF in experimental animals with controlled hypotension. Acute hypotension was produced by trimethaphan camsylate, halothane, and sodium nitroprusside. Halothane produced less reduction in CBF per drop in blood pressure than the other two agents.

Background: Spinal anesthesia-induced hypotension is one of the most complications which can cause many severe maternal and fetal complications. Therefore, prevention treatment spinal in pregnant women undergoing cesarean delivery play an important role. The use vasopressors effective method hypotensive prophylaxis phenylephrine currently first-line vasopressor choice to prevent this complicati...

middle ear surgery. Dexmedetomidine can be a potential agent in controlled hypotension. In this study we investigated efficacy of dexmedetomidine as an adjunct to induce controlled hypotension in tympanoplasty with low-flow anesthesia. Materials and Methods: Forty patients undergoing middle ear surgery were studied. Anesthesia was induced with thiopental and vecuronium bromide. Maintenance of a...

Background: Spinal anesthesia is an accepted technique in elective cesarean sections. However, hypotension, resulted from sympathectomy is a common problem, especially in pregnant women. Prevention of this complication by sympathomimetic agents is of potential clinical significance. The aim of this study is to compare the effect of prophylactic infusion of Phenylephrine versus Ephedrine in the ...