title: Cost-effectiveness analysis of ondansetron and prochlorperazine for the prevention of postoperative nausea and vomiting.
abstract: OBJECTIVE
  To compare the cost-effectiveness of 2 antiemetic agents, ondansetron and prochlorperazine, for the prevention of postoperative nausea and vomiting (PONV) in patients undergoing total hip replacement or total knee replacement procedures.
  
  
  METHODS
  The cost-effectiveness analysis model was applied to data derived from a previous clinical study conducted in 1995 and 1996. This study involved 78 adult patients (62.8% female and 37.2% male) undergoing total hip replacement or total knee replacement procedures. Patients were enrolled in a randomized, double-blind manner to receive either ondansetron 4 mg intrvenously (n=37) or prochlorperazine 10 mg intramuscularly (n=41) immediately upon completion of surgery and were monitored for occurrences of PONV during the subsequent 48 hours. In our analysis, we measured the cost-effectiveness ratio (C/E ratio), defined as the cost per successfully treated patient, for each antiemetic agent using the clinical data obtained from the previous study.
  
  
  RESULTS
  The incidence of PONV and use of rescue antiemetics was significantly greater in the ondansetron group compared with the prochlorperazine group. The mean total costs of PONV management per patient in the prochlorperazine and ondansetron groups were dollar 13.99 and dollar 51.98, respectively (based on 2004 average wholesale prices [AWP]). The cost of successfully treating one patient with prochlorperazine and ondansetron was dollar 31.87 and dollar 275.01, respectively. One-way sensitivity analysis was performed adjusting the percent efficacy rate of each antiemetic and the drug cost of ondansetron (up to a 50% reduction in AWP). Prochlorperazine remained the dominant strategy across each scenario.
  
  
  CONCLUSIONS
  The results indicate that prochlorperazine is a more cost-effective antiemetic compared with ondansetron for the prevention of PONV in a mixed gender, adult inpatient population undergoing total joint arthroplasty.
authors.affiliation: Western University of Health Sciences, Pomona, California 91766, USA. changp@westernu.edu
authors.forename: Peter
authors.initials: P
authors.lastname: Chang
authors.forename: Mark
authors.initials: M
authors.lastname: Okamoto
authors.forename: Jack
authors.initials: J
authors.lastname: Chen
authors.forename: David
authors.initials: D
authors.lastname: Frame
mesh_terms: D000932:Antiemetics / Q000191:economics / Q000627:therapeutic use*; D019644:Arthroplasty, Replacement, Hip; D019645:Arthroplasty, Replacement, Knee; D003362:Cost-Benefit Analysis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017294:Ondansetron / Q000191:economics / Q000627:therapeutic use*; D020250:Postoperative Nausea and Vomiting / Q000517:prevention & control*; D011346:Prochlorperazine / Q000191:economics / Q000627:therapeutic use*; D016032:Randomized Controlled Trials as Topic
chemical_list: D000932:Antiemetics; D017294:Ondansetron; D011346:Prochlorperazine