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  • Title: Comparative penetration of cefonicid and cefazolin into the atrial appendage and pericardial fluid of patients undergoing open-heart surgery.
    Author: Dudley MN, Nightingale CH, Drezner AD, Low HB, Quintiliani R.
    Journal: Antimicrob Agents Chemother; 1984 Sep; 26(3):347-50. PubMed ID: 6334490.
    Abstract:
    The penetration of cefonicid and cefazolin into cardiac tissue was compared after a single 30-mg/kg dose in 30 patients undergoing aortocoronary artery bypass graft surgery. Samples of the right atrial appendage, pericardial fluid, and serum were obtained at various times and assayed for drug content. The concentrations of cefonicid in serum and the atrial appendage were at least twice those observed for cefazolin at a given time after a dose. The mean (+/- standard deviation) atrial appendage-serum ratio was 0.47 +/- 0.14 for cefonicid and 0.34 +/- 0.06 for cefazolin (P less than 0.005). Pericardial fluid concentrations of cefonicid were slightly lower than those observed in patients receiving cefazolin (P greater than 0.05). A single intravenous dose of cefonicid provides high and sustained concentrations in serum and cardiac tissue and thus may be useful in antibiotic prophylaxis of certain surgical procedures; however, further study of the efficacy of this agent in the prevention and treatment of infections associated with Staphylococcus spp. is needed.
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