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British Journal of Anaesthesia, Vol 82, Issue 1 137-139, Copyright © 1999 by The Board of Management and Trustees of the British Journal of Anaesthesia

SHORT COMMUNICATIONS

Changes in plasma potassium concentration during carbon dioxide pneumoperitoneum

A. Perner, K. Bugge, K. M. Lyng, S. Schulze, P. A. Kristensen and A. Bendtsen
Department of Anaesthesia, Sundby Hospital, University of Copenhagen, DK-2300 Copenhagen, Denmark; Department of Surgery, Sundby Hospital, University of Copenhagen, DK-2300 Copenhagen, Denmark; Department of Anaesthesia, Gentofte Hospital, University of Copenhagen, DK-2900 Hellerup, Denmark

Hyperkalaemia with ECG changes had been noted during prolonged carbon dioxide pneumoperitoneum in pigs. We have compared plasma potassium concentrations during surgery in 11 patients allocated randomly to undergo either laparoscopic or open appendectomy and in another 17 patients allocated randomly to either carbon dioxide pneumoperitoneum or abdominal wall lifting for laparoscopic colectomy. Despite an increasing metabolic acidosis, prolonged carbon dioxide pneumoperitoneum resulted in only a slight increase in plasma potassium concentrations, which was both statistically and clinically insignificant. Thus hyperkalaemia is unlikely to develop in patients with normal renal function undergoing carbon dioxide pneumoperitoneum for laparoscopic surgery.
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