title: Prophylactic antibiotics for non-laboring patients with intact membranes undergoing cesarean delivery: an economic analysis.
abstract: OBJECTIVE
  We conducted an economic analysis of prophylactic antibiotic administration for elective cesarean delivery.
  
  
  METHODS
  We created a decision tree comparing the use of prophylactic antibiotics (cefazolin 1 gm intravenous) with no antibiotic use. We modeled the potential for anaphylaxis, and included outcomes of fever and endometritis. Outcome probabilities and effectiveness of antibiotic administration were derived from published sources. Costs are 2001 estimates derived from our hospital's accounting system. Sensitivity analyses were performed over the range of actual patient costs and 95% CI of the risk and probability estimates.
  
  
  RESULTS
  Cost of an uncomplicated elective cesarean delivery was $1638.57. Fever evaluation added $125.91. Elective procedure complicated by endometritis cost $2327.29. Cefazolin administration cost $1.01. The following estimates were used: relative risk (RR) of endometritis with antibiotics was 0.18 (95% CI 0.07-0.45), fever 0.47 (95% CI 0.32-0.68), risk of endometritis without prophylaxis 4.8% (95% CI 0.9%-43%), and fever without prophylaxis 14.4% (95% CI 4%-33%). Cost of an average case without prophylaxis was $1683.72; prophylaxis reduced this to $1653.06. Sensitivity analysis over the ranges above still yielded cost savings.
  
  
  CONCLUSIONS
  Administration of prophylactic antibiotics for elective cesarean delivery reduced costs by $30.66 per case, approximately 2% of the total cost. Prophylactic antibiotic administration results in cost savings for elective cesarean delivery.
authors.affiliation: Tufts University School of Medicine and Tufts-New England Medical Center, Department of Obstetrics and Gynecology, Division of General Obstetrics and Gynecology, Boston, Mass, USA.
authors.forename: David
authors.initials: D
authors.lastname: Chelmow
authors.forename: Michael
authors.initials: M
authors.lastname: Hennesy
authors.forename: Edward G
authors.initials: EG
authors.lastname: Evantash
mesh_terms: D000900:Anti-Bacterial Agents / Q000008:administration & dosage / Q000191:economics*; D019072:Antibiotic Prophylaxis / Q000191:economics* / Q000706:statistics & numerical data*; D001900:Boston; D002437:Cefazolin / Q000008:administration & dosage / Q000191:economics*; D002585:Cesarean Section; D003362:Cost-Benefit Analysis; D003663:Decision Trees; D005260:Female; D006801:Humans; D007262:Infusions, Intravenous; D011247:Pregnancy; D011645:Puerperal Infection / Q000517:prevention & control
chemical_list: D000900:Anti-Bacterial Agents; D002437:Cefazolin