Document Detail

Characterization of anorectal pressure and the anorectal inhibitory reflex in healthy preterm and term infants.
MedLine Citation:
PMID:  11487749     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: To evaluate anorectal motor function in healthy premature and term infants with the use of micromanometric techniques. STUDY DESIGN: Anorectal manometry was performed in 22 healthy neonates (9 female) with a mean postmenstrual age of 32 weeks (range, 30 to 38 weeks) with a micromanometric anorectal assembly (od 2.0 mm). The assembly incorporated a 2-cm-long sleeve sensor for measurement of resting anal sphincter pressures and relaxation, and 4 sideholes recorded anal and rectal pressures. Rectal distension was performed with a latex balloon or direct air insufflation to elicit the anorectal inhibitory reflex (AR). RESULTS: The mean anal sphincter pressure, rectal pressure, and rhythmic wave frequency were 40 mm Hg (range, 7 to 65 mm Hg), 11 mm Hg (range, 1 to 27 mm Hg), and 10/min (range, 8 to 14/min), respectively. A normal AR could be elicited in 21 of the 22 infants studied. CONCLUSION: An anorectal micromanometric sleeve catheter is suitable for use in evaluating anorectal pressures in preterm and term neonates. Insufflation of air without the use of a balloon to elicit the AR is reliable and suitable for use in infants <34 weeks. Premature infants older than 30 weeks' postmenstrual age have normal anorectal pressures and a normal AR.
M A Benninga; T I Omari; R R Haslam; C P Barnett; J Dent; G P Davidson
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of pediatrics     Volume:  139     ISSN:  0022-3476     ISO Abbreviation:  J. Pediatr.     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-08-06     Completed Date:  2001-09-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375410     Medline TA:  J Pediatr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  233-7     Citation Subset:  AIM; IM    
Department of Pediatric Gastroenterology & Nutrition, Academic Medical Center, Amsterdam, The Netherlands.
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MeSH Terms
Anal Canal / physiology*
Analysis of Variance
Gestational Age
Infant, Newborn
Infant, Premature*
Manometry / instrumentation,  methods*

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