To the editor: Ambulatory surgery has rapidly increased in

recent years due to the request of patients and the increase in the cost of inpatient health services [1]. Patients who undergo ambulatory surgery usually receive general anesthesia or local anesthesia with sedation. Studies have reported that these types of anesthesia can impair cognitive and psychomotor performance [2-4]. The impairment of cognitive and psychomotor performance may threaten the safety of patients who undergo ambulatory surgery because patients are often discharged 2 to 3 hours post-operatively. Therefore, discharge criteria have been devised to ensure patient safety [2]. Gynecologic surgeries such as loop electrosurgical excisional procedure (LEEP) are usually performed as ambulatory surgery. However, there is no study addressing the usefulness of discharge criteria in patients who undergo ambulatory gynecologic surgery