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Etomidate versus pentobarbital for sedation of children for head and neck CT imaging
Andrew J Kienstra1, Mark A Ward, Fahimeh Sasan
1Department of Pediatrics, Section of Emergency Medicine, Baylor College of Medicine, Texas Children's Hospital, Houston, TX 77030, USA. kienstra@bcm.tmc.edu
Insights
Pentobarbital demonstrated higher sedation success rates for pediatric head and neck CT scans compared to etomidate. While etomidate offered shorter sedation durations and fewer parental concerns, pentobarbital remains superior for achieving successful sedation in children.
Area of Science:
- Pediatric Radiology
- Anesthesiology
- Pharmacology
Background:
- Sedation is crucial for pediatric head and neck CT imaging.
- Choosing an appropriate sedative agent balances efficacy, safety, and patient/parent experience.
Purpose of the Study:
- To compare the efficacy and safety of etomidate versus pentobarbital for sedating children undergoing head and neck CT scans.
Main Methods:
- Prospective, randomized, double-blinded trial involving children aged 6 months to 6 years.
- Primary outcome: sedation success rate.
- Secondary outcomes: induction time, sedation duration, examination time, side effects, and parental satisfaction.
Main Results:
- Pentobarbital achieved a significantly higher sedation success rate (97%) compared to etomidate (57%-76% depending on dosage).
- Etomidate resulted in shorter induction, sedation, and total examination times.
- Parents reported greater satisfaction and fewer concerns with etomidate post-discharge.
Conclusions:
- Pentobarbital is more effective for achieving sedation success in pediatric head and neck CT imaging at the dosages studied.
- Etomidate offers benefits of shorter sedation duration and improved parental experience, but with lower success rates.
- Further research may explore optimized etomidate dosing or alternative agents.
Objectives:
We compare etomidate to pentobarbital for sedation of children for head and neck computed tomography imaging.
Methods:
We performed a prospective, randomized, double-blinded trial of patients aged 6 months to 6 years enrolled from the emergency department or radiology department at a large urban children's hospital. The primary outcome measure was sedation success rate.
Results:
A total of 61 patients were enrolled in the study (27 etomidate group, 34 pentobarbital group) at 2 different dosing regimens for etomidate. The final analysis group included 17 etomidate patients and 33 pentobarbital patients. The success rate for the etomidate group was 57% at total doses of up to 0.3 mg/kg (n = 7) and 76% at total doses of up to 0.4 mg/kg (n = 17), in contrast to a success rate of 97% for pentobarbital at a total dose of up to 5 mg/kg (n = 33). The success rate for pentobarbital was significantly greater than the final etomidate group (P = 0.04; difference in proportions 20.5%, 95% CI 1.9% to 44.4%). Patients receiving etomidate had significantly shorter induction times (P = 0.02; difference of means 2.1 minutes, 95% CI 0.35 to 3.86), sedation times (P < 0.001; difference of means 31.3 minutes, 95% CI 24.0 to 38.5), and total examination times (P < 0.001; difference of means 53.1 minutes, 95% CI 40.8 to 65.3). Significantly more parents in the etomidate group perceived their child to be back to baseline by discharge from the hospital (P < 0.001; difference of proportions 60.7, 95% CI 29.1 to 92.4) and expressed fewer concerns about their child's behavior after discharge (P = 0.024; difference of proportions 28.6, 95% CI 6.5 to 50.7).
Conclusions:
At the dosing used in this study, pentobarbital is superior to etomidate when comparing success rates for sedation. However, among the successful sedations, the duration of sedation was shorter in the etomidate group than in the pentobarbital group. Pentobarbital is associated with more frequent side effects and parental concerns compared to etomidate.
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