British Journal of Anaesthesia, Vol 75, Issue 4 417-421, Copyright © 1995 by The Board of Management and Trustees of the British Journal of Anaesthesia
C. J. Joyce and A. B. Baker
We have studied 51 patients who were allocated randomly and prospectively
to receive either 100% oxygen (n = 16), 70% nitrous oxide in oxygen (n =
18) or 30% oxygen in nitrogen (n = 17) as the inspired gas during
anaesthesia for abdominal hysterectomy. Lung volumes were measured before
and after surgery. TLC, VC, FVC and FEV1 but not RV or FRC were reduced
after surgery. There were no significant differences between the three
treatment groups in any of the lung volumes measured. We conclude that
absorption atelectasis during anaesthesia is not the main cause of
perioperative changes in lung volume after abdominal hysterectomy. Any
effect of the inspired gas is likely to be of limited clinical
significance.
CLINICAL INVESTIGATIONS
Effects of inspired gas composition during anaesthesia for abdominal hysterectomy on postoperative lung volumes
Department of Anaesthesia and Intensive Care, University of Otago, Dunedin, New Zealand and Dunedin Public Hospital, Denedin, New Zealand
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