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.