Effect of Preoperative Oral Energy Drinks Compared to Warming Matress on Body Temperature During Combined Spinal-epidural Anesthesia for Elective Cesarean Delivery.

Exclusion Criteria

• •Contraindications for combined spinal-epidural anesthesia;
• •A diagnosis of delayed gastric emptying, hyperemesis gravidarum until late pregnancy, or consumption of drugs that affect gastrointestinal motility within 3 days before surgery;
• •Preoperative body temperature \>38°C or \<36°C or the use of drugs that affect body temperature;
• •Pregnancy combined with diabetes, hypertension, or metabolic disorders (eg, hypothyroidism or hyperthyroidism);
• •Ear diseases (eg, otitis media, tympanic membrane perforation, etc) affecting measurement of ear temperature;
• •Intraoperative malfunction of the warming blanket;
• •Patients who were simultaneously undergoing other operations (eg, removal of uterine fibroids and ovarian cysts) or had a surgical time \>1.5 hours;
• •Patients with blood transfusion or autologous blood transfusion intraoperatively;
• •Patients who did not receive the anesthetic specified in the protocol;
• •Patients who failed to drink 125ml energy drinks before surgery.