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  • Title: A randomized, double-blind, placebo-controlled trial to determine effectiveness of antibiotic prophylaxis for tension-free mesh herniorrhaphy.
    Author: Perez AR, Roxas MF, Hilvano SS.
    Journal: J Am Coll Surg; 2005 Mar; 200(3):393-7; discussion 397-8. PubMed ID: 15737849.
    Abstract:
    BACKGROUND: In recent years, use of prosthetic material for inguinal hernia repair has increased dramatically. Tension-free repairs have gained popularity not only for recurrent or complicated hernias, but for primary hernia repairs as well. Although routine use of prophylactic antibiotics is not recommended in the Philippines for open nonimplant herniorrhaphy, there is little direct clinical evidence on which to base recommendations when implantable mesh is used. STUDY DESIGN: We conducted a prospective, randomized, double-blind, placebo-controlled trial comparing wound infection rates in 360 patients (180 received prophylactic antibiotics, 180 received a placebo) undergoing primary inguinal hernia repair electively using polypropylene mesh. Age, gender, American Society of Anesthesiologists class, type of hernia, type of anesthesia, and duration of operation were recorded. Infections were evaluated 1 week, 2 weeks, and 1 month after operation by an independent surgeon. All complications were recorded. Results were assessed using chi-square, Fisher's exact test, and Student's t-tests as appropriate. RESULTS: Groups were well matched for all preoperative variables studied, including comorbid conditions. Six patients from the antibiotic group and four from the placebo group failed to followup after the second week. Superficial surgical site infection developed in 3 patients (1.7%) from the antibiotic group and 6 (3.3%) from the placebo group (p = 0.50). One from each group developed deep surgical site infection. Both patients were readmitted and underwent repeated debridement, which eventually resulted in graft loss. CONCLUSIONS: Preoperative administration of single-dose antibiotic for tension-free inguinal mesh herniorrhaphy did not markedly decrease risk of wound infection in this patient population. Our results do not support use of antibiotic prophylaxis for tension-free mesh herniorrhaphy.
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