Patients
drug abuse
GASTRO-ESOPHAGEAL REFLUX, DISORDERS, MORBID OBESITY
We included female patients (age: 18–65 years, American Society of Anesthesiologists Physical Status Class I–II) scheduled for elective hysteroscopy. Patients were divided into two groups: Group S, who received general anesthesia (sufentanil, Yichang Renfu Pharmaceutical Co. LTD, Yichang city, China) and Group L, who received OFA (lidocaine, Anhui Changjiang Pharmaceutical Co. LTD, Wuhu City, China). The exclusion criteria were as follows: history of drug abuse, refusal to provide consent, history of psychotropic medication or psychological disorders, treatment using angiotensin-converting enzyme inhibitors, gastro-esophageal reflux, morbid obesity (BMI ≥ 30 kg/m