title: Anaesthesia with profound hypotension for middle ear surgery.
abstract: To produce a blood-free field for middle ear surgery performed with the operating microscope, the arterial systolic pressure was reduced to less than 50 mm Hg in 700 patients by means of thiopentone-halothane-nitrous oxide in oxygen anaesthesia together with pentolinium tartrate. In 84% the results were excellent, in 12% moderately good and they were poor in 4%. There were more unsatisfactory results in males (22.8%) than in females (11.4%). In spite of the arterial pressure being reduced to very low values in many instances, there was no mortality or morbidity which could be ascribed to the technique.
mesh_terms: D000328:Adult; D001794:Blood Pressure; D004432:Ear, Middle / Q000601:surgery*; D005260:Female; D006488:Hemostasis, Surgical; D006801:Humans; D007023:Hypotension, Controlled / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010425:Pentolinium Tartrate
chemical_list: D010425:Pentolinium Tartrate