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Related Experiment Videos

[Anorectal manometry in the newborn]

R Núñez1, I Vargas, R Cabrera

  • 1Servicio de Cirugía Pediátrica, Hospital Universitario Materno-Infantil Infanta Cristina, Badajoz.

Cirugia Pediatrica : Organo Oficial De La Sociedad Espanola De Cirugia Pediatrica
|July 1, 1993
PubMed
Summary
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Anorectal manometry is a reliable method for assessing newborn bowel function. This study found the rectoanal inhibitory reflex (RIR) is typically present in newborns, aiding in diagnosing conditions like Hirschsprung

Area of Science:

  • Neonatal Physiology
  • Gastroenterology
  • Diagnostic Methods

Context:

  • Anorectal manometry is a key diagnostic tool for evaluating neonatal bowel motility.
  • Assessing the rectoanal inhibitory reflex (RIR) is crucial for identifying functional abnormalities.
  • Newborn infants, including preterm and fullterm, present unique physiological considerations.

Purpose:

  • To evaluate the utility of anorectal manometry in neonates.
  • To assess the presence and characteristics of the rectoanal inhibitory reflex (RIR) in newborns.
  • To determine the correlation between anal canal length and infant characteristics.

Summary:

  • Anorectal manometry was performed on 32 newborns (18 preterm, 14 fullterm).
  • The rectoanal inhibitory reflex (RIR) was present in 31 infants, with relaxation correlated to stimulus intensity.

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  • One infant diagnosed with Hirschsprung's disease showed a negative RIR.
  • Anal canal length differed significantly between preterm (10.3 mm) and fullterm (14.7 mm) infants (p < 0.0001).
  • RIR presence was independent of infant weight, gestational age, or birth age.
  • Anal canal length correlated with infant weight.

    • Impact:

    • Anorectal manometry is confirmed as a simple, reliable, and safe method for neonatal anorectal functional assessment.
    • This technique aids in the early diagnosis of conditions like Hirschsprung's disease in newborns.
    • Findings contribute to understanding neonatal bowel development and function.