title: [Induced hypotension for endoscopic sinus surgery].
abstract: The purpose of the present investigation is to examine whether induced hypotension can improve the dryness of the surgical field in endoscopic sinus surgery (ESS). ASA physical status I and II adult patients with chronic sinutitis undergoing ESS were studied. All patients were not premedicated. Anesthesia was induced with propofol and maintained with sevoflurane and fentanyl. The patients were allocated randomly into two groups. In patients of Group C, mean arterial blood pressure (MAP) was maintained around 80 mmHg. In Group H, sodium nitroprusside was infused to maintain controlled hypotension with MAP around 60 mmHg. Blood loss, dryness of the surgical field, volume of fluid infusion and urine output, and surgical as well as anesthetic time were compared. Blood loss and dryness of the surgical field were significantly different between the groups. Volume of infused fluid, urine output, and surgical as well as anesthetic time were not significantly different. Induced hypotension with sodium nitroprusside improved surgical conditions and decreased blood loss in ESS.
authors.affiliation: Department of Anesthesiology and Intensive Care Medicine, Jichi Medical School, Tochigi 329-0498.
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Saitoh
authors.forename: Hideo
authors.initials: H
authors.lastname: Suzuki
authors.forename: Akiko
authors.initials: A
authors.lastname: Hiruta
authors.forename: Takashi
authors.initials: T
authors.lastname: Igarashi
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Fukuda
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Hirabayashi
authors.forename: Norimasa
authors.initials: N
authors.lastname: Seo
authors.forename: Keiichi
authors.initials: K
authors.lastname: Ichimura
mesh_terms: D000328:Adult; D016063:Blood Loss, Surgical; D002908:Chronic Disease; D004724:Endoscopy; D005260:Female; D006801:Humans; D007023:Hypotension, Controlled; D008297:Male; D008875:Middle Aged; D012852:Sinusitis / Q000601:surgery*