British Journal of Anaesthesia, 1985, Vol. 57, No. 2 174-179
© 1985 The Board of Management and Trustees of the British Journal of Anaesthesia
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NON-VERBAL RESPONSE TO INTRAOPERATIVE CONVERSATION
Department of Anesthesiology, University of California, Davis Medical Center 2315 Stockton Blvd, Sacramento, California, USA 95817
Department of Anesthesiology, School of Medicine, University of California Davis, Davis, California, USA 95616
California School of Professional Psychology Los Angeles, California, U.S.A.
Correspondence and reprint requests to H.L.B.
In a double-blind study, 33 patients (herniorraphy, cholecystectomy and orthopaedic) were randomly assigned to either suggestion or control groups. Under known clinical levels of nitrous oxide and enflurane or halothane anaesthesia, suggestion patients were exposed to statements of the importance of touching their ear during a postoperative interview. Compared with controls, suggestion patients did touch their ear (tetrachoric correlation 0.61, P <0.001) and they did so more frequently (Mann-Whitney U test, P < 0.02). All suggestion patients were completely amnesic for the intraoperative spoken suggestion, despite inquiries which included hypnotic regression to the operation.
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