Data Collection
The clinical study was approved by the Ethics Committee, and all clinical data use and telephone follow-ups were carried out after obtaining the consent of patients.
Medical records for patients who underwent sedated ABR tests between December 2015 and March 2022 were reviewed, and 7,176 ABR tests (6,106 patients) with sufficient data were included. The collected data were as follows: clinic registration number, gender, age, and telephone number. Telephone follow-up was conducted for patients with two or more consecutive tests within 60 days (according to hospital regulations and clinical experience, patients who failed sedation should complete the examination within 60 days), and 729 ABR tests were included (Figure 1). Telephone follow-up data were as follows: history of sedation failure, administration method (mixed or direct), sleep deprivation (yes or no), failure performance (failure to sleep, insufficient sedation, and superficial sleep), and adverse events (vomiting, agitation, etc.). The success of sedation was considered as patients who kept quiet and completed the test without incident. The failure to sleep was considered patients who were restless and unable to sleep. Insufficient sedation meant patients woke up in the middle of the tests and did not complete the tests on the same day. Superficial sleep meant patients did not reach the required sleep depth.