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  • Title: [Antibiotic prophylaxis in heart surgery].
    Author: Lehot JJ, Celard M, Etienne J, Brun Y, Bastien O, Fleurette J, Estanove S.
    Journal: Ann Fr Anesth Reanim; 1994; 13(5 Suppl):S78-87. PubMed ID: 7778817.
    Abstract:
    Cardiac surgery enters mainly into the class I of Altemeier ("clean surgery"). However, many factors may explain an intraoperative contamination: surgery of long duration, extra-corporeal circulation, aspiration of blood and air, immunodepression...). In fact, the infectious risk decreases from about 25% with placebo to 5% with prophylactic antibiotics. The staphylococcal infections are the most frequent (mediastinitis, endocarditis, parietal infections...). Cephalosporins, particularly of second-generation type (cefamandole, cefuroxime), perform better than antistaphylococcal penicillins. The combination with an amino-side may be used when Gram negative bacilli infection prevalence is high. Vancomycin is efficient but hypotension and renal impairment have been reported. Therefore, vancomycin is used in patients allergic to cephalosporins, when a high prevalence of methicillin-resistant Staphylococcus or enterococci infections is reported, or when the patient has recently received broad-spectrum antimicrobial therapy. The antibiotic doses must take into account the haemodilution due to extracorporeal circulation and the necessity to obtain sufficient serum concentrations throughout surgery. A prophylaxis of more than 48 hours is not associated with an improved outcome. In cardiac transplantation a prophylaxis is essential, but is still questioned during the insertion of pace-markers. In any case, the antibiotic prophylaxis must take into account the bacterial prevalence of each institution.
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