investigation of the effects of antibiotic application on the intestinal flora in elderly hypertension patients with infectious diseases

Background: this study aimed to investigate the effects of antibiotic application on the intestinal flora in el-derly hypertension patients with infectious diseases. methods: a total of 2350 infected patients treated in ordos central hospital (inner mongolia, china) from january 2010 to august 2016 were retrospectively analyzed and 790 healthy hypertension patients were selected as the control group. the 2350 patients were assigned into group a and b based on the administration with narrow-spectrum antibiotic or broad-spectrum antibiotic. the feces specimens of patients at the 1st, 5th, 9th and 14th day after antibiotic treatment were collected to analyze the bacteriological data and the cases of intes-tinal flora imbalance after applying the narrow-spectrum and broad-spectrum antibiotic were compared and the differences in the bacterial colony compositions of intestinal floras from those of the healthy hypertension pa-tients at the same period were analyzed. results: the ratio of intestinal flora imbalance was 50.4% after applying antibiotic in patients from group a and 78.3% in group b. grade i and ii imbalance were predominant in group a and grade iii imbalance was the most severe one in group b (p<0.05). compared with the intestinal flora in healthy elderly hypertension pa-tients, the ratio of the primary composition flora of patients with imbalanced intestinal flora was changed obvi-ously. conclusion: the application of narrow-spectrum antibiotic and shortening the application time of antibiotic can more effectively protect the normal intestinal flora of elderly hypertension patients.