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Canadian Journal of Anesthesia, Vol 19, 373-380, Copyright © 1972 by Canadian Anesthesiologists' Society

Pulmonary Gas Exchange: A Comparison of the Effects of Sighs of the Effects of Sighs Using Helium and Oxygen with the Effects of Positive Expiratory Pressure Plateau

K. W. TURNBULL B.A.SC., M.D.1

1 Pulmonary Function Laboratory, Department of Anaesthesia, St. Paul's Hospital, University of British Columbia, Vancouver, British Columbia

A comparison of periodic hyperinflations or "sights" and positive expiratory pressure plateau (PEPP) was done in ten post-operative cardiac patients. Highly significant decreases in shunts (Qs/Qt) and highly significant increases in PaO2 occurred with PEPP. Improvement in ventilation occurred with "sighs" but no change in oxygenation or perfusion was observed. A BIRD respirator was used and was adapted to PEPP.






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Copyright © 1972 by the Canadian Anesthesiologists' Society.