Prevention of postoperative nausea and vomiting in gynaecological laparotomies: a comparison of tropisetron and ondansetron.
In a randomized, double-blind study, the antiemetic efficacy of a single bolus of tropisetron 5 mg (group T, 37 patients), ondansetron 4 mg (group O, 39 patients) or saline (group C, 45 patients) given at induction was compared in a homogeneous group of 121 patients undergoing gynaecological laparotomy and receiving postoperative patient-controlled intravenous morphine for 24 to 48 hours. Fewer group T and group O patients developed severe nausea compared to group C (P < 0.01, log rank test in Kaplan-Meier analysis). Group T patients also had lower nausea scores than group O at 8 to 16h (P < 0.05). The overall incidences of severe nausea in groups T, O, and C were 5.4%, 17.9%, and 44.4% respectively (P < 0.001, group T vs group C; P < 0.05 group O vs group C). In conclusion, the 5-hydroxytryptamine 3 receptor antagonists tropisetron and ondansetron were superior to placebo in preventing PONV.
Tsui
S L
SL
Department of Anaesthesiology, Queen Mary Hospital, Pokfulam, Hong Kong.
Ng
K F
KF
Wong
L C
LC
Tang
G W
GW
Pun
T C
TC
Yang
J C
JC
D000932:Antiemetics / Q000627:therapeutic use*; D004311:Double-Blind Method; D005260:Female; D013509:Gynecologic Surgical Procedures; D006801:Humans; D007211:Indoles / Q000627:therapeutic use*; D007813:Laparotomy; D008875:Middle Aged; D017294:Ondansetron / Q000627:therapeutic use*; D020250:Postoperative Nausea and Vomiting / Q000517:prevention & control*; D012702:Serotonin Antagonists / Q000627:therapeutic use*; D000077526:Tropisetron
D000932:Antiemetics; D007211:Indoles; D012702:Serotonin Antagonists; D017294:Ondansetron; D000077526:Tropisetron