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Am J Obstet Gynecol. 1988 May;158(5):1049-52.

Single-dose cefazolin prophylaxis for cesarean section.

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Department of Obstetrics and Gynecology, Rambam Medical Center, Technion Faculty of Medicine, Haifa, Israel.


In a prospective, randomized trial, the efficacy of a single-dose, first-generation, long-acting cephalosporin was compared with a three-dose regimen in a group of 100 women undergoing cesarean section who were at high risk for postoperative febrile morbidity. Fifty women received a single 1 gm intravenous dose of cefazolin and 50 received 1 gm of the drug followed by two additional doses, 8 hours apart, to complete a three-dose regimen. Another 50 women, considered to be at low risk for postoperative febrile morbidity, were not given antibiotic prophylaxis. Outcomes of febrile morbidity (18% vs 12%) and particularly morbidity caused by endometritis (6% vs 8%, respectively) were similar for single-dose and three-dose groups. In the untreated low-risk group there were no cases of endometritis and the febrile morbidity was comparable to that of the prophylactically treated groups (14% vs 15%). Single-dose cefazolin prophylaxis appears to be comparable to multidose prophylaxis in reducing febrile morbidity after cesarean section.

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