title: [Postoperative vomiting].
abstract: BACKGROUND
  Nausea and vomiting following general anaesthesia are among the most frequent adverse reactions causing complications, the relief of which is an absolute demand. 5-HT3 receptor antagonists, such as ondansetron, belonging to the latest class of antiemetics were launched more than a decade ago.
  
  
  METHODS
  Efficacy and tolerability of ondansetron injection in prevention of postoperative nausea and vomiting were investigated in a prospective, randomised, double-blind, placebo controlled, three-armed clinical study in 148 patients undergoing laparoscopic cholecystectomy. Moreover the authors also investigated the effect of timing of dosing, i.e. whether the administration of antiemetic drug before starting anaesthesia has any advantage comparing its use at the end of operation.
  
  
  RESULTS
  While using a standard surgical and anaesthesia method vomiting after laparoscopic cholecystectomy occurred in a frequency of 44.7% of the patients in the placebo group, whereas the figures decreased significantly after administration of 4 mg ondansetron at the end (28.9%) or before (25.5%) anaesthesia. Inclusively the frequency of severe cases decreased from 19.2% of control group up to 8.9% and 4.3% in the active groups, respectively.
  
  
  CONCLUSIONS
  Intravenous administration of 4 mg ondansetron effectively reduces vomiting occurring in more than 40% of patients after laparoscopic cholecystectomy, especially the frequency of severe cases, and mainly if administered before operation. The preparation is safe; no clinical or laboratory adverse reactions, complications have been observed in the studied patients.
authors.affiliation: Egészségtudományi Kar, Aneszteziológiai és Intenzív Terápiás Klinika, Semmelweis Egyetem, Budapest.
authors.forename: László
authors.initials: L
authors.lastname: Vimláti
authors.forename: Júlia
authors.initials: J
authors.lastname: Pallós
authors.forename: Katalin
authors.initials: K
authors.lastname: Nagy
authors.forename: Miklós
authors.initials: M
authors.lastname: Murányi
authors.forename: Zsolt
authors.initials: Z
authors.lastname: Szabó
authors.forename: Veronika
authors.initials: V
authors.lastname: Karoliny
authors.forename: János
authors.initials: J
authors.lastname: Steiber
mesh_terms: D000328:Adult; D000368:Aged; D000768:Anesthesia, General / Q000009:adverse effects; D000932:Antiemetics / Q000008:administration & dosage / Q000627:therapeutic use*; D017081:Cholecystectomy, Laparoscopic / Q000379:methods; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017294:Ondansetron / Q000008:administration & dosage / Q000627:therapeutic use*; D020250:Postoperative Nausea and Vomiting / Q000188:drug therapy* / Q000209:etiology / Q000517:prevention & control*; D011446:Prospective Studies; D012702:Serotonin Antagonists / Q000008:administration & dosage / Q000627:therapeutic use*; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D000932:Antiemetics; D012702:Serotonin Antagonists; D017294:Ondansetron
vernacular_title: A posztoperatív hányásról.