PMID: 9549740Apr 29, 1998Paper

Reference values of gastric intramucosal pH in children

Paediatric Anaesthesia
F Reinoso-BarberoS García

Abstract

To determine the reference values of gastric intramucosal pH (pHi) by tonometry in paediatric patients, we studied 17 children (nine males, eight females) with no systemic or gastrointestinal disease, aged six months to 12 years undergoing minor reconstructive surgery. Following anaesthetic induction a sigmoid tonometry catheter was inserted (Tonometrics, Inc.) into the stomach of the patients under direct vision. All children were normoventilated and were haemodynamically stable. After an equilibration period of 30 min, gastric pHi was calculated by applying the Henderson-Hasselbalch equation on the PCO2 obtained with the tonometer and the bicarbonate from the arterial blood gas analysis. The mean gastric pHi in our patients was 7.35 +/- 0.06 (SD). The normal pHi in the general population is estimated to be 7.31-7.40, with a confidence interval of 99%. No correlation was found between pHi and arterial pH, bicarbonate or base excess. Under conditions of normal ventilation and haemodynamic stability, healthy children during general anaesthesia have gastric intramucosal values similar to those of adults.

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Citations

Nov 18, 2003·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Markus WeissAlexander Dullenkopf
Nov 28, 2012·Clinical and Experimental Gastroenterology·Mohammad Khan
May 22, 2004·Nursing in Critical Care·Andrea P Marshall, Sandra H West
May 3, 2000·Paediatric Anaesthesia·M ConchaF Altermatt
Aug 24, 2001·Pediatric Research·M E Campbell, K L Costeloe

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