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Canadian Journal of Anesthesia, Vol 22, 647-652, Copyright © 1975 by Canadian Anesthesiologists' Society

Pulmonary Shunting during Anaesthesia in Man

J. GILBERT STONE 1, HOSHANG J. KHAMBATTA 1, ROBERT T. DONHAM 1, and STUART F. SULLIVAN 1

1 Department of Anesthesiology, Columbia Presbyterian Medical Center, New York, New York 10032

Qs/Qt was determined during halothane and oxygen anaesthesia in 22 patients. All were believed to have no pulmonary dysfunction. A surgical operation was in progress and respiration was controlled. Qs/Qt was minimal in 15 of these patients (mean 3.9 ± 0.3 per cent), indicating that anaesthesia and operation can be conducted in man without a significant increase of pulmonary shunting. The level of shunting was increased in the other seven patients. In neither group was Qs/Qt altered by the passage of time. Age varied between 23 and 61 years and was directly and significantly correlated to Qs/Qt (r = 0.57, P < 0.01).






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Copyright © 1975 by the Canadian Anesthesiologists' Society.