[Intraoperative pH-metry in the prevention of incomplete vagotomy and ischemia of the gastric wall in selective proximal vagotomy].

Experiments were conducted on 14 mongrel dogs to appraise the validity of the results of intraoperative pH-metry in the control of vagotomy completeness depending on the force of pressure exerted on the pH electrode with consideration for the type of a pH catheter used. The level of parietal pH increased with elevating pressure force due to diminished circulation in the gastric wall. The encountered diminution of circulation in the gastric wall after SPV increases still more the pH level and reduces the amplitude of its growth even in areas with maintained parasympathetic innervation with the use of histamine, which raises the probability of incomplete vagotomy. The authors conclude that pH-metry by slight application of the pH electrode to the gastric wall raises the validity of the values recorded and reduces the frequency of incomplete vagotomy in patients operated on in the clinic by 4.7 times. Increase of parietal pH to more than 6.7, irrespective of the force of the exerted pressure, is an indirect sign of ischemia of the gastric wall.