Postoperative Empirical Antibiotic Use for Uncomplicated Perianal Abscess and Fistula

Document Type : Research/Original Article

Author

Department of Surgery, Al-Kindy College of Medicine, University of Baghdad

Abstract

Background: Perianal abscesses remain one of the most frequent surgical cases encountered by both general and colorectal surgeons.
The use of broad-spectrum empirical antibiotics for perianal abscesses after drainage also remains common, although with
questionable benefit.
Objectives: The aim of the study conducted was to evaluate the role and efficacy of intra- and post-operative empirical antibiotic
combination with a wide antibacterial spectrum for the treatment of perianal abscess and fistula-in-ano.
Methods: An observational longitudinal study consisted of 150 patients; 50% of them underwent incision and drainage of their
perianal abscess. The rest had fistula-in-ano and were treated with fistulotomy. Patients were prescribed a course of empiric antibiotics
at the time of diagnosis. The prescribed antibiotic consisted of two regimes. The mechanism of the first regime was based on
inhibiting bacterial cell wall synthesis, whereas the second regime included antibiotics inhibiting protein synthesis of the bacteria.
Afterwards, analysis of the effect of postoperative use of empiric antibiotics was performed regarding symptom assessment,
recurrence rate of abscess, fistula formation, cellulitis, bacteremia and sepsis.
Results: Among 150 patients included in the study, 92% were male and 8% were female. The age range was 20 to 66 years (mean 39.97 ± 0.16 years). Seventy-five of them had perianal abscess and the rest had fistula-in-ano. They were prescribed a course of empiric antibiotics. Patients who had perianal abscess showed an abscess recurrence rate of 10% and 5% after six and twelve months
respectively. Perianal fistula formation occurred at the rate of 25% and 5% after six and twelve months respectivelywhenLincomycin treatment was used. Patients with perianal fistula treated with both fistulotomy and Lincomycin were followedupfor six and twelve months. Follow-up showed an 11.42% rate of abscess formation after six months, however no recurrence of fistula was found.
Conclusions: The results of this study concluded that antibiotics administered after incision and drainage had reduced the rate of fistula formation, abscess recurrence, cellulitis and sepsis. Our limited patient sampling does not provide a definite conclusion, although it is clear that fistula formation is of clinical importance in the role of empiric antibiotics in preventing recurrence and
merits further study.

Keywords

References

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Iranian Journal of Colorectal Research
Volume 5, Issues 1-2
2017
Pages 1-8

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