[Oximetry of stomach: comparative study between proximal gastric vagotomy and anterior lesser curve seromyotomy with posterior truncal vagotomy in chronic duodenal ulcer].
Delayed gastric emptying of solid food is greater after proximal gastric vagotomy (PGV) than after anterior lesser curve seromyotomy with posterior truncal vagotomy (ASPTV) and may be due to the hypoxia in the gastric wall and mainly in the gastric pacemaker.


OBJECTIVE
To verify if operative devascularization of the lesser curve and the gastric fundus could affect the entire stomach and particularly the pacemaker area.


METHODS
Measures of intraoperative oxyhemoglobin saturation (SpO2) were taken by pulse oximetry on the anterior gastric wall in 20 patients with chronic duodenal ulcer, randomly allocated in two groups of 10 individuals for surgical treatment, by PGV or ASPTV.


RESULTS
Measurements, before partial fundoplication, showed that the area of the proximal lesser curve and the gastric fundus had a significant decrease in the SpO2 when compared to the gastric corpus (p < 0,05); the SpO2 was not reduced significantly by the procedures on the pacemaker area; the ligature of short gastric vessels, in association with PGV or ASPTV, reduced significantly the SpO2 (p < 0,05); and, PGV resulted in a SpO2 significantly lower than in ASPTV (p < 0,05).


CONCLUSIONS
When PGV is associated with the ligature of the short gastric vessels, it causes acute ischemic changes in the proximal lesser gastric curve and in the fundus more intensively than ASPTV. The gastric pacemaker area does not present hypoxia immediately after operative procedures.
Arasaki
Carlos Haruo
CH
Universidade Federal de São Paulo, Escola Paulista de Medicina (UNIFESP-EPM), Brasil. haruo@osite.com.br
Martinez
Júlio César
JC
del Grande
José Carlos
JC
D000704:Analysis of Variance; D001683:Biological Clocks; D004381:Duodenal Ulcer / Q000601:surgery*; D005748:Gastric Fundus / Q000294:innervation; D006801:Humans; D010092:Oximetry; D013270:Stomach / Q000294:innervation / Q000601:surgery*; D014629:Vagotomy, Proximal Gastric; D015167:Vagotomy, Truncal