Rectal measurements and their correlation with bowel habits: Evaluation by trans-abdominal ultrasound in children

Samaneh Shapouri1, Rahman Matani1, Ali Salahshoor2

  • 1Pediatrics Medicine Department, Imam Ali Hospital, Alborz University of Medical Sciences, Karaj, Iran.

Insights

Ultrasound rectal measurements like rectal transverse diameter and anterior wall thickness correlate with childhood constipation severity and duration. These findings may help in assessing constipation and potentially reduce the need for digital rectal exams.

Area of Science:

  • Pediatric Gastroenterology
  • Medical Imaging
  • Clinical Diagnostics

Background:

  • Childhood constipation is a prevalent issue impacting children's quality of life.
  • Accurate assessment of constipation is crucial for effective management.

Purpose of the Study:

  • To investigate the relationship between ultrasound-derived rectal measurements and bowel habits in children with functional constipation.
  • To explore the utility of ultrasound in evaluating pediatric constipation.

Main Methods:

  • A cross-sectional study involving 100 children diagnosed with functional constipation.
  • Data collection included questionnaires, physical examinations (including digital rectal examination), and complete abdominopelvic ultrasound.
  • Key ultrasound measurements were rectal transverse diameter (RTD) and rectal anterior wall thickness (RAWT), along with assessment for fecal impaction.

Main Results:

  • The study included 100 children with a mean age of 7.68 years and a mean constipation duration of 15.86 months.
  • Ultrasound revealed a mean RTD of 3.39 cm and RAWT of 2.77 mm, with fecal impaction present in 70% of cases.
  • Rectal transverse diameter and anterior wall thickness showed positive correlations with age, constipation duration, and hard stools, and a negative correlation with defecation frequency (P < 0.05).

Conclusions:

  • Rectal measurements via ultrasound, specifically RTD and RAWT, are associated with constipation duration and stool consistency.
  • Ultrasound data may offer a non-invasive alternative, potentially obviating the need for digital rectal examination in initial pediatric constipation assessments.
Abstract

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