Study Objective: To evaluate whether isopropyl alcohol vapor is an effectiv
e treatment for postoperative nausea and vomiting.
Design: Double-blind randomized controlled study.
Setting: Pediatric surgery center.
Patients: 91 ASA physical status I and II children age 6-16 years, schedule
d to undergo general anesthesia and elective outpatient surgery.
Interventions: Subjects were randomized to inhale isopropyl alcohol or sali
ne. The intervention was repeated up to three times. If postoperative nause
a or vomiting-persisted after three sequences, intravenous ondansetron was
administered as rescue therapy.
Measurements and Main Results: Improvement in nausea was assessed using a v
isual analog scale, and improvement in vomiting was assessed using categori
cal analysis. lifter three treatment sequences, 65% of the children in the
treatment group and 26% of the children in the control group had a signific
ant reduction in the severity of either nausea or vomiting (p = 0.03). Howe
ver, 54% of subjects in the treatment group and 80% of subjects in the cont
rol group had recurrent nausea or vomiting within 20 to 60 minutes.
Conclusions: Under the conditions of this study, repetitive inhaled isoprop
yl alcohol only achieved a transient antiemetic effect in children with est
ablished postoperative nausea or vomiting following general anesthesia and
surgery. (C) 1999 by Elsevier Science Inc.