Oral antibiotic prophylaxis induces changes in the microbiology of surgical site infection after colorectal surgery. A matched comparative study

IF 2.9 3区医学 Q2 GASTROENTEROLOGY & HEPATOLOGY

Colorectal Disease Pub Date : 2025-01-30 DOI:10.1111/codi.70008

Miriam Flores-Yelamos, Montserrat Juvany, Josep M. Badia, Ana Vázquez, Marta Pascual, David Parés, Alexander Almendral, Enric Limón, Miquel Pujol, Aina Gomila-Grange, Members of the VINCat Colorectal Surveillance Team

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Abstract

Aim

Oral antibiotic prophylaxis (OAP) lowers rates of surgical site infection (SSI) and may aid anastomotic healing in colorectal surgery. The aim of this study was to analyse the understudied impact of OAP on SSI microbiology after colorectal surgery.

Method

A post hoc analysis was performed on a previous prospective, multicentre study of elective colorectal surgery. For 1000 patients with SSI, this study compared the microbiology of SSIs in procedures without OAP (SSI/OAP–) and with OAP (SSI/OAP+).

Results

There were 340 patients in the SSI/OAP– group and 660 in the SSI/OAP+ group. The use of OAP increased the presence of Gram-positive cocci (GPC) (OR 1.542, 95% CI 1.153–2.062) and fungi (OR 2.037, 95% CI 1.206–3.440), but reduced rates of Gram-negative bacteria (GNB) (OR 1.461, 95% CI 1.022–2.088) and anaerobe isolation (OR 0.331, 95% CI 0.158–0.696). Specifically, it led to increases in the isolation of Enterococcus faecium (OR 1.450, 95% CI 0.812–2.591), methicillin-resistant Staphylococcus aureus (OR 2.000, 95% CI 1.043–3.834) and Candida spp. (OR 2.037, 95% CI 1.206–3.440). In colon surgery with OAP, GPC infections were more likely (OR 1.461, 95% CI 1.022–2.088). In rectal surgery, organ/space SSIs had a higher risk of harbouring GPC (OR 1.860, 95% CI 1.153–2.999) and a lower risk of GNB (OR 0.321, 95% CI 0.200–0.515).

Conclusion

OAP reduced the presence of anaerobes and GNB in SSIs, but increased the isolation of GPCs and fungi, with E. faecium and Candida being of particular concern. This information should guide empirical antibiotic therapy for postoperative colorectal SSIs in patients who have received preoperative OAP.

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来源期刊

Colorectal Disease 医学-胃肠肝病学

CiteScore

6.10

自引率

11.80%

发文量

406

审稿时长

1.5 months

期刊介绍： Diseases of the colon and rectum are common and offer a number of exciting challenges. Clinical, diagnostic and basic science research is expanding rapidly. There is increasing demand from purchasers of health care and patients for clinicians to keep abreast of the latest research and developments, and to translate these into routine practice. Technological advances in diagnosis, surgical technique, new pharmaceuticals, molecular genetics and other basic sciences have transformed many aspects of how these diseases are managed. Such progress will accelerate. Colorectal Disease offers a real benefit to subscribers and authors. It is first and foremost a vehicle for publishing original research relating to the demanding, rapidly expanding field of colorectal diseases. Essential for surgeons, pathologists, oncologists, gastroenterologists and health professionals caring for patients with a disease of the lower GI tract, Colorectal Disease furthers education and inter-professional development by including regular review articles and discussions of current controversies. Note that the journal does not usually accept paediatric surgical papers.