1.

青少年脊柱侧凸患者各项指标情况

Characteristics of theAIS patients

Items	n=986
BMI: Body mass index; PONV: Postoperative nausea and vomiting; PCIA: Patient controlled intravenous analgsia.
Age (year, Mean±SD)	14.4±1.7
Male/female	156/830
BMI (kg/m2, Mean±SD)	18.4±2.8
Preoperative cardiac disease (%)	6.1%
Preoperative respiratory disease (%)	12.2%
Incidence of PONV within 48 h(%)	15.3%
0-6 h	8.1%
6-24 h	3.9%
24-48 h	3.3%
Usage rate of PCIA (%)	82.4%
Usage rate of metoclopramide (%)	16.3%
Usage rate of tropisetron/ondansetron (%)	3.7%
Postoperative hospital stay (day)	13.2±3.1