Safety and Risk Assessment of Obese Parturient Underwent Cesarean Section(CS) Delivery Under Different Anesthesia Ways

900 parturient who underwent CS under general anesthesia(GA) , intraspinal anesthesia included epidural anesthesia(EA) and combined spinal-epidural anesthesia(CSEA), which were divided into 3 groups: Morbid Obesity group (n=300) with body mass index (BMI) \>40 kg/m2 , severe Obesity group (n=300) with 30 kg/m2≤BMI ≤40 kg/m2 and non-Obesity group(n=300) with BMI\40 kg/m2, 30 kg/m2≤BMI ≤40 kg/m2 and BMI\<30 kg/m2.900 patients completed the protocol and related data were analysed.