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Prevention of post-operative infection in appendicectomy by single dose intravenous metronidazole. An open

P A Kling, D Holmlund, L G Burman

    Acta Chirurgica Scandinavica
    |January 1, 1985
    PubMed

    Insights

    Single-dose intravenous metronidazole effectively reduced post-operative infection rates in appendicectomy patients. This antibiotic prophylaxis proved significantly more effective than no treatment or doxycycline for perforated appendices.

    Area of Science:

    • Surgical Infection Prevention
    • Clinical Microbiology
    • Evidence-Based Medicine

    Background:

    • Appendicectomy is a common surgical procedure with a risk of post-operative infections.
    • Current prophylactic strategies vary, especially for perforated appendicitis.
    • Optimizing antibiotic prophylaxis can improve patient outcomes and reduce healthcare costs.

    Purpose of the Study:

    • To evaluate the efficacy of single-dose intravenous metronidazole as prophylaxis for appendicectomy.
    • To compare metronidazole prophylaxis with no prophylaxis and doxycycline therapy in specific appendicitis cases.
    • To determine the impact of antibiotic prophylaxis on overall post-operative infection rates.

    Main Methods:

    • An open prospective randomized study design was employed.
    • Participants undergoing appendicectomy were assigned to receive either metronidazole prophylaxis or no prophylaxis/doxycycline.
    • Post-operative infection rates were meticulously monitored and compared between groups.

    Main Results:

    • Single-dose intravenous metronidazole prophylaxis resulted in a significantly lower overall post-operative infection rate (1.4%) compared to no prophylaxis/doxycycline (16%, p < 0.025).
    • In cases of unperforated appendix, single-dose metronidazole prophylaxis led to zero infections, versus 8.2% in untreated controls (p < 0.025).
    • For perforated appendices, continued metronidazole plus nalidixic acid also demonstrated reduced infection rates.

    Conclusions:

    • Single-dose intravenous metronidazole is a highly effective prophylactic agent for appendicectomy.
    • Metronidazole prophylaxis significantly reduces surgical site infections in appendicectomy patients, including those with perforated appendices.
    • This study supports the routine use of metronidazole for appendicectomy prophylaxis to improve surgical outcomes.

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