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. 1994 Nov;38(11):2564–2567. doi: 10.1128/aac.38.11.2564

Bacteria: a major pathogenic factor for anastomotic insufficiency.

H M Schardey 1, T Kamps 1, H G Rau 1, S Gatermann 1, G Baretton 1, F W Schildberg 1
PMCID: PMC188242  PMID: 7872748

Abstract

The aim of this study was to determine the influence of bacteria on the development of anastomotic insufficiency following gastrectomy in the rat. Fifty-seven male Wistar rats were randomly assigned to three groups and subjected to gastrectomy. Group I (n = 20) was orally inoculated with 10(9) Pseudomonas aeroginosa organisms on postoperative day 1. Group II (n = 20) served as the control group. Group III (n = 17) was decontaminated with 320 mg of tobramycin, 400 mg of polymyxin B, and 500 mg of vancomycin per liter of fluid administered from preoperative day 7 to postoperative day 10. Swabs from the oropharynx and rectum were cultured and analyzed daily for gram-positive and gram-negative bacteria. Surviving animals were sacrificed on postoperative day 10. All animals were autopsied immediately following death. Anastomotic insufficiency was defined as a histologically proven transmural defect at the suture line. Along with an effective reduction of pathogenic bacteria colonizing the oropharynx, the rate of anastomotic insufficiency could be reduced significantly, to 6% in decontaminated animals compared with 80% in controls (P < 0.001 by Fisher's exact test). Inoculation of group I animals with P. aeruginosa led to an increase of anastomotic insufficiency up to 95% and a significant increase in mortality (P < 0.05). We conclude that bacteria play a major role in the pathogenesis of anastomotic insufficiency following gastrectomy in the rat.

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Selected References

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