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Canadian Journal of Anesthesia, Vol 9, 342-346, Copyright © 1962 by Canadian Anesthesiologists' Society

Prolongation of Thiopental Anaesthesia with Hydroxyzine, SA 97, Thiethylperazine, and Thioridazine

ALLEN B. DOBKIN M.D.1, JACOB S. ISRAEL M.D.1, and V. GUY CRISWICK B.S.1

1 Anesthesia Research Laboratory, Department of Anesthesiology, Upstate Medical Center, Syracuse, New York

Four series of crossover experiments were carried out with mongrel dogs to determine whether hydroxyzine and SA 97 (diphenylmethane derivatives) and thiethylperazine and thioridazine (phenothiazine derivatives) prolong sleep induced by thiopental. It was found that hydroxyzine caused prolongation of thiopental sleep, but this effect was not consistet, whereas the other three drugs invariably delayed recovery from thiopental.

When these drugs are used in association with clinical anaesthesia, the slower awakening should be kept in mind in order to avoid the possibility of airway obstruction and pulmonary complications, which often result from delayed return of consciousness.

Note:

Medical student research assistant







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Copyright © 1962 by the Canadian Anesthesiologists' Society.