Effect of treatment on rectal and sigmoid motility in chronically constipated children

Area of Science:

• Pediatric Gastroenterology
• Colorectal Motility Studies

Background:

• Chronic constipation is a common pediatric issue.
• Rectal and sigmoid motility abnormalities may play a role in constipation.

Purpose of the Study:

• To investigate rectal and sigmoid motility in constipated children.
• To assess the impact of treatment on motility and long-term outcomes.

Main Methods:

• Utilized three pressure transducers to record motility in the lower/upper rectum and sigmoid.
• Compared motility parameters (frequency, duration, amplitude, activity, surface area) between 18 healthy and 18 constipated children.
• Monitored motility changes after 2 months of treatment and at 7-12 months and 3 years post-treatment.

Main Results:

• Constipated children exhibited significantly lower percent activity and surface area in all recording areas compared to controls (P < .05).
• Treatment with milk of magnesia significantly increased motility in constipated children (P < .05), normalizing values compared to controls (P > .1).
• Motility remained normal at 7-12 months and 3 years, though most children still experienced constipation and fecal soiling.

Conclusions:

• Hypomotility in untreated constipated children appears secondary to chronic fecal impaction and rectal distension.
• While not the primary cause, this hypomotility may contribute to constipation severity.
• Normalizing motility through treatment does not guarantee complete symptom resolution, indicating other factors are involved.