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Antibiotic prophylaxis for open-heart surgery

P D Myerowitz, K Caswell, W G Lindsay

    The Journal of Thoracic and Cardiovascular Surgery
    |April 1, 1977
    PubMed
    Summary
    This summary is machine-generated.

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    For open-heart surgery, cephalothin antibiotic prophylaxis significantly reduced infections like urinary tract infections, pneumonia, and sepsis compared to methicillin. Cephalothin is now the preferred choice for preventing surgical site infections.

    Area of Science:

    • Infectious Diseases
    • Surgical Prophylaxis
    • Cardiovascular Surgery

    Background:

    • Antibiotic prophylaxis is crucial in preventing surgical site infections (SSIs) following open-heart surgery.
    • Staphylococcus aureus is a common pathogen implicated in SSIs after cardiac procedures.
    • Evaluating the efficacy of different antibiotic classes for prophylaxis is essential for optimizing patient outcomes.

    Purpose of the Study:

    • To compare the effectiveness of broad-spectrum cephalothin versus specific antistaphylococcal methicillin for antibiotic prophylaxis in open-heart surgery patients.
    • To determine if one antibiotic regimen leads to a lower incidence of postoperative infections.

    Main Methods:

    • A randomized, prospective study was conducted from May 1972 to June 1973.
    • Patients undergoing open-heart surgery were randomly assigned to receive either methicillin or cephalothin preoperatively.

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  • Outcomes assessed included infection rates (urinary tract, pneumonia, sepsis, endocarditis, wound), hospitalization duration, and postoperative fever.

    • Main Results:

    • The methicillin group experienced significantly higher rates of urinary tract infections (22 vs. 3 cases), pneumonia (9 vs. 0 cases), and sepsis/prosthetic valve endocarditis (11 vs. 0 cases) compared to the cephalothin group.
    • No significant differences were observed in age, hospitalization duration, cardiopulmonary bypass time, or wound infection rates.
    • A significant difference in the male-to-total patient ratio and operation duration was noted between groups.

    Conclusions:

    • Cephalothin demonstrated superior efficacy in preventing serious postoperative infections compared to methicillin in open-heart surgery.
    • The findings support the use of cephalothin as the routine prophylactic agent for open-heart surgery at the institution.
    • This study highlights the importance of selecting appropriate antibiotic prophylaxis to minimize infectious complications in cardiac surgery.