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The Effect of Dexmedetomidine Sedation on Lower Gastrointestinal Motility in Children-Is It Suitable for Anorectal

Tal David Berger1, Karina Lukovits2, David Cavanaugh3

  • 1Department of Gastroenterology, Boston Children's Hospital, Boston, MA 02115, USA.

Journal of Clinical Medicine
|December 9, 2023
PubMed

Insights

Dexmedetomidine (DEX) may disrupt anorectal manometry (ARM) readings in children. This sedation may alter key measurements like resting intra-anal sphincter pressure and the recto-anal inhibitory reflex, potentially impacting diagnoses.

Area of Science:

  • Pediatric Gastroenterology
  • Gastrointestinal Motility Studies
  • Pharmacology in Pediatrics

Background:

  • Anorectal manometry (ARM) is crucial for diagnosing pediatric gastrointestinal conditions, notably Hirschsprung disease (HD).
  • Sedation during ARM is necessary due to patient discomfort, but current options like nitrous oxide or midazolam are limited.
  • The impact of Dexmedetomidine (DEX) on pediatric anorectal function during ARM has not been previously investigated.

Purpose of the Study:

  • To evaluate the safety and efficacy of Dexmedetomidine (DEX) for sedating children undergoing anorectal manometry (ARM).
  • To determine if DEX administration affects key ARM parameters, including resting intra-anal sphincter pressure (IASP) and the recto-anal inhibitory reflex (RAIR).

Main Methods:

  • A prospective study involving 20 pediatric patients undergoing ARM.
  • ARM measurements (IASP and RAIR) were recorded before and at 1 and 5 minutes after DEX administration (bolus followed by infusion).

Main Results:

  • Dexmedetomidine (DEX) administration led to the absence of the recto-anal inhibitory reflex (RAIR) in 12.5% of patients.
  • Preliminary findings suggest DEX may alter physiological ARM recordings, including resting intra-anal sphincter pressure (IASP).

Conclusions:

  • Dexmedetomidine (DEX) may interfere with anorectal manometry (ARM) measurements in pediatric patients.
  • Further research is needed to confirm the effects of DEX on ARM and its implications for diagnosing conditions like Hirschsprung disease (HD).

Keywords:
childrenconstipationdexmedetomidinemanometryoutcomessedation

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