Efficacy of Rectal Versus Oral Chloral Hydrate in Pediatric Auditory Brainstem Response: Randomized Controlled Trial.

Objective: To compare sedation success rates between rectal (RCH) and oral chloral hydrate (OCH) administration in children undergoing auditory brainstem response (ABR) testing and assess the incidence of adverse effects.

Study Design: Randomized controlled trial, performed between May 2023 and August 2023.

Setting: Ear, Nose, and Throat Outpatient Department at tertiary care hospital.

Methods: Pediatric patients aged 1 to 5 years, who were indicated for ABR testing were enrolled and randomly divided into 2 groups. The control group received 10% wt/vol chloral hydrate orally at a dose of 50 mg/kg, while the other group received the same dose through rectal administration. Onset of sedation, duration of sedation, recovery time, vital signs, and adverse effects were recorded and analyzed to assess sedative effectiveness and safety.

Results: Eighty-eight children were randomly assigned to RCH or OCH administration groups, the sedation success rates of RCH and OCH groups were 84.09% and 90.91%, respectively ( = .33). Adverse effects were detected in 11 children (12.5%), with a vomiting rate of 20.45% in the oral group versus 0% in the rectal group ( = .002). The diarrhea rate was 4.55% in the rectal group versus 0% in the oral group ( = .16). In either group, no serious adverse effects were documented.

Conclusion: RCH and OCH are both safe and effective for short-term sedation in pediatric patients during ABR testing. Interestingly, RCH administration offers a high success rate without vomiting or major adverse effects. This study established the effectiveness of RCH for sedation in children under specialized supervision.