Melatonin is useful alternative for sedation in children undergoing auditory brainstem responses testing.

Auditory brainstem responses testing (ABRs) is frequently required to assess auditory function in children. It is done usually in outpatient fashion and requires deep sleep to avoid artefacts. Sedation method used for the test should allow a deep sleep while avoiding general anaesthesia that requires special monitoring, dedicated staff and operating room availability. For this purpose, several sedation methods have been used, with the risk of respiratory depression and sides effects. We aim to assess the efficacy and the usefulness of melatonin in sedation for children undergoing auditory brainstem responses testing. We calculated success rate of complete bilateral ABR, sleep delay and quality of sleep of 247 children referred for ABR testing. Two hundred six children (83.4%) successfully underwent both ears testing. The delay to sleep was variable with a mean of 32 min. The quality of sleep was described as continuous in 156 infants (75.7%) and discontinuous in 50 infants (24.27%) requiring either simple nursing or a second dose of melatonin 30 min later.Conclusion: Melatonin has the advantages of inducing natural sleep and reducing sleep delay without adverse effects or respiratory depression risk. It is efficient and useful sedation method for ABRs in an outpatient setting. What Is Known? • Auditory brainstem responses test is the most used objective test to assess auditory function in children and requires deep sleep to avoid artefacts. • Melatonin is an endogenous pineal hormone used for sedation in electrophysiological testing and magnetic resonance imaging. What Is New? • 83.4% of children in our study successfully performed a bilateral ABR under melatonin-induced sleep with continuous sleep in 75.7%. • The use of melatonin to induce sleep for ABR tests is useful in an outpatient setting and it is a good alternative to general anaesthesia in Morocco.