British Journal of Anaesthesia, Vol 81, Issue 6 850-853, Copyright © 1998 by The Board of Management and Trustees of the British Journal of Anaesthesia
JYY. Wang, G. N. Russell, R. D. Page, M. Jackson and S. H. Pennefather
We have compared the effects of sevoflurane and isoflurane on arterial
oxygenation, heart rate and mean arterial pressure during one lung
anaesthesia in a prospective, crossover study. We studied 28 patients
undergoing oesophagogastrectomy, allocated alternatively to one of two
groups. Patients in group I/S (n = 14) received 1 MAC (1.1%) of isoflurane
in oxygen from induction until the end of 30 min of open chest one lung
ventilation (OLV) in the lateral position. This was followed by 1 MAC
(2.1%) of sevoflurane in oxygen for the next 30 min of OLV. Patients in
group S/I (n = 14) received the two anaesthetic agents in the reverse
order. We found no significant difference in arterial oxygenation, heart
rate or mean arterial pressure between the two potent inhalation agents. In
the subgroup of patients with pulmonary artery catheters (n = 12), we found
a significant increase (P < 0.05) in derived shunt during sevoflurane
anaesthesia. There was no significant difference in mixed venous saturation
and cardiac output. We conclude that during one lung ventilation, the
choice between sevoflurane and isoflurane did not significantly influence
arterial oxygenation.
CLINICAL INVESTIGATIONS
Comparison of the effects of sevoflurane and isoflurane on arterial oxygenation during one lung ventilation
Cardiothoracic Centre, Thomas Drive, Liverpool L14 3PE
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