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Figure 1 | Critical Care

Figure 1

From: Equipment review: Gastric intramucosal pH measurement

Figure 1

Gastric tonometry determines intraluminal PCO2 which is assumed to be in equilibrium with PCO2 in the gastric mucosa. Intramucosal pH (pHim) can be calculated by the Henderson-Hasselbach equation using the PCO2 value determined by gastric tonometry and the bicarbonate concentration in arterial blood.

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Critical Care

ISSN: 1364-8535