Assessment of splanchnic tissue oxygenation by gastric tonometry in patients undergoing laparoscopic and open cholecystectomy

Author:

Thaler W1,Frey L2,Marzoli G P1,Messmer K2

Affiliation:

1. Second Department of Surgery, Hospital of Bolzano, Bolzano, Italy

2. Institute for Surgical Research, Ludwig-Maximilians-Universität München, Klinikum Großhadern, München, Germany

Abstract

Abstract This experimental study compared the effects of laparoscopic (n = 31) and open (n = 32) cholecystectomy on gastric intramucosal pH (pHj). For this purpose, pHj was measured tonometrically before induction of anaesthesia, at 30-min intervals during surgery, and 1, 2 and 4 h after operation in otherwise healthy patients undergoing elective cholecystectomy. Additionally, perioperative arterial pH (pHa), arterial carbon dioxide tension (PaCO2), intramucosal carbon dioxide tension, arterial bicarbonate concentration, end-tidal carbon dioxide pressure (PECO2), levels of serum lactate, lactate dehydrogenase (LDH) and γ-glutamyl transferase (GGT), haematocrit and arterial blood pressure were recorded. In the two groups no significantly different changes occurred in pHi, pHa, serum lactate concentration or haematocrit at any of the observation times. PECO2 and PaCO2 were significantly raised during the laparoscopic procedure, whereas levels of LDH and GGT and arterial blood pressure rose during and after open cholecystectomy. In spite of the increased intra-abdominal pressure and the peritoneal carbon dioxide absorption related to the creation of a pneumoperitoneum, no decrease in pHi was detectable during laparoscopic cholecystectomy.

Publisher

Oxford University Press (OUP)

Subject

Surgery

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