The Rhodes index of nausea, vomiting and retching (RINVR) is a reliable and valid instrument to assess PONV. The purpose of this study was to investigate the incidence of PONV in high risk group with using RINVR.
MethodsPatients scheduled for elective surgery under general anesthesia were classified in three groups (group I: two risk factors, group II: three risk factors, group III: four risk factors) by using a simplified risk score. We investigated the incidences of PONV in each group.
ResultsThe incidence of PONV was 12.8% in group I, 25% in group II, and 33.1% in group III, which showed a significant difference between group I and group II, between group I and group III. The incidence of PONV, which was over moderate was significantly increased in group III.
ConclusionsFor patients with three or four risk factors a multimodal antiemetic strategy should be considered.