British Journal of Anaesthesia, 2001, Vol. 87, No. 5 774-777
© 2001 The Board of Management and Trustees of the British Journal of Anaesthesia
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Subclinical hepatic dysfunction in laparoscopic cholecystectomy and laparoscopic colectomy
1Department of Anesthesiology and 3Department of Laboratory Medicine, Keio University, Shinjuku, Tokyo, Japan*Corresponding author: Department of Anesthesiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
Laparoscopic surgery causes a reduction in hepatic blood flow due to a number of factors, including raised intra-abdominal pressure, the neurohumoral response to surgical stress and the effect of patient position. The clinical significance of the phenomenon is not fully understood. Plasma concentrations of alcohol dehydrogenase (AD) and glutathione S-transferase (GST), which are concentrated in the centrilobular acinus of the liver, sensitively reflect hepatic hypoperfusion, and can be used to monitor reductions in hepatic blood flow. We compared perioperative AD, GST, aspartate aminotransferase (AST, normal range 1432 IU litre1) and alanine aminotransferase (ALT, normal range 841 U litre1) concentrations in patients undergoing laparoscopic cholecystectomy or laparoscopic colectomy to study how patient position and surgical manipulation of the liver affect hepatocellular integrity during laparoscopy. There were significant postoperative increases in AD and GST in the cholecystectomy group [mean (SD) peak concentration 10.8 (4.7) U litre1 and 113 (55) µg litre1 respectively]. Although the duration of pneumoperitoneum was longer in the colectomy group, there were no comparable perioperative increases in AD and GST in this group [peak concentration 4.0 (4.0) U litre1 and 33 (35) µg litre1 respectively]. AST and ALT on the first postoperative day were significantly higher in the laparoscopic cholecystectomy group (41 and 34 U litre1 respectively) than in the laparoscopic colectomy group (24 and 18 U litre1; P<0.05 for each). These results indicate that patient position and the effects of surgical manipulation of the liver affect perioperative hepatic perfusion significantly.
Br J Anaesth 2001; 87: 7746
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