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Pediatric sedation: short-term effects

T L Slovis1, C Parks, D Reneau

  • 1Children's Hospital of Michigan, Department of Radiology, Detroit 48201.

Pediatric Radiology
|January 1, 1993
PubMed
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This study evaluated sedation for pediatric MRI scans. Most children recovered quickly, but pentobarbital caused hyperactivity in older children and prolonged sleep in younger ones.

Area of Science:

  • Pediatric Sedation
  • Magnetic Resonance Imaging (MRI)
  • Pharmacology

Background:

  • Sedation is frequently required for pediatric magnetic resonance (MR) imaging to ensure patient cooperation and image quality.
  • Various pharmacologic agents are used, each with a unique safety and efficacy profile.
  • Optimizing sedation regimens is crucial for minimizing patient distress and procedural complications.

Purpose of the Study:

  • To prospectively evaluate the short-term safety and efficacy of different sedation regimens in nonhospitalized pediatric MR patients.
  • To compare the effects of chloral hydrate, pentobarbital, midazolam, and diazepam, with fentanyl as an adjunct.
  • To identify potential adverse effects associated with specific sedation protocols.

Main Methods:

  • A prospective investigation involving 549 nonhospitalized pediatric patients undergoing MR examinations.

Related Experiment Videos

  • Administration of sedation using chloral hydrate, pentobarbital, midazolam, or diazepam, with fentanyl used as an enhancement agent.
  • Assessment of sedation efficacy, duration of sleep, post-procedure drowsiness, unsteadiness, activity resumption, and adverse events like hyperactivity.

    • Main Results:

    • All evaluated sedation regimens demonstrated good overall safety and efficacy.
    • 84% of children slept less than 8 hours post-examination; 90% were drowsy/unsteady for less than 8 hours.
    • 97% resumed usual activities within 24 hours. Pentobarbital was associated with significant hyperactivity in 8.4% of children over 8 years.
    • A multiple-dose pentobarbital and fentanyl regimen prolonged sleep (>8 hours) in 35% of children under 8 years.
    • Midazolam was effective in 9 out of 10 children requiring repeat sedation after pentobarbital failure or multiple doses.

    Conclusions:

    • Sedation regimens for pediatric MR imaging are generally safe and effective.
    • Pentobarbital carries risks of hyperactivity in older children and prolonged sedation in younger children, especially with multiple doses or fentanyl.
    • Midazolam appears to be a viable alternative for children who have previously failed or required multiple doses of pentobarbital.