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[pH and the bacteriology of gastroplasties after esogastric resection].

A study of pH of digestive fluid in 24 patients six days after esophagogastric resection (EGR) showed conservation of acidity (pH: 3 or less) in one-thirds of cases. Immediate postoperative course was invariable with respect to incidence of pneumopathy and fistulae. Fungal infection is almost a constant finding in digestive grafts together with microbial pullulation, with a linear relation to pH. Ecology of germs was that of digestive flora of patients with obstruction, selected by the antibiotic cover administered. Group D streptococci and Gram negative bacilli were usually resistant to cephalosporins. Regurgitation pneumopathy therefore requires modification of antibiotic therapy and possible antifungal treatment. When functional disturbance is provoked by EGR, as for example a reflux syndrome; only those patients (1/3) with a pH of 3 or less can obtain relief from treatment with antacids.