[Microflora of the small intestine in patients with perforating duodenal ulcers].

The toxic phase of peritonitis in patients with perforating duodenal ulcers is accompanied with the development of syndrome of redundant bacterial colonization of the small intestine. However, it is less pronounced than in other forms of intra-abdominal infection. The greatest quantitative growth in all the patients is observed among the species of the family of enterobacteria and aerobic Gram-positive bacilli, the bacterial species dominating in the upper part of the intestine in health being the leading etiological agents of intra-abdominal infection in patients with perforating duodenal ulcers. Unlike peritonitis of other etiology strict anaerobic bacteria are found in the small intestine much rarer.