Related Experiment Video

Updated: Jun 20, 2026

In Vivo Luminal Measurement of Distension-Evoked Urothelial ATP Release in Rodents
09:17

In Vivo Luminal Measurement of Distension-Evoked Urothelial ATP Release in Rodents

Published on: September 7, 2022

24-hour rectal manometry for overactive bladder

Iben Moeller Joensson1, Soren Hagstroem, Klaus Krogh

  • 1Institute of Clinical Medicine, University of Aarhus, Aarhus, Denmark. iben.jonsson@ki.au.dk

The Journal of Urology
|August 22, 2009
PubMed

Insights

Children with overactive bladder exhibit three distinct rectal motility patterns, with increased activity during the night. No interaction was found between rectal and bladder activity during defecation or urination.

Area of Science:

  • Pediatric Gastroenterology
  • Urology
  • Physiology

Background:

  • Overactive bladder (OAB) in children can impact quality of life.
  • Understanding rectal motor function is crucial for managing OAB symptoms.

Purpose of the Study:

  • To characterize rectal motor activity patterns in children with nonneuropathic overactive bladder.
  • To investigate potential rectum-bladder interactions during defecation and micturition.

Main Methods:

  • Prolonged rectal manometry was performed on 10 children (mean age 9.7 years) with OAB.
  • Urodynamic studies and 24-hour rectal manometric recordings were analyzed visually.
  • Rectal contractions were defined as pressure exceeding 5 cm H(2)O for over 5 seconds.

Main Results:

  • Three distinct rectal motility patterns were identified: slow tonic waves, rectal motor complexes, and single contractions.
  • Nocturnal rectal motor complex duration and total contraction time were significantly greater than during the day (p <0.05).
  • Characteristic rectal activity occurred during defecation and voiding, but no bladder-rectum interaction was detected.

Conclusions:

  • Children with overactive bladder demonstrate three specific rectal motility patterns.
  • The rectum exhibits periodic motor activity, similar to the upper gastrointestinal tract, with increased nocturnal frequency.
  • No association was found between bladder and rectal activity during micturition and defecation in this cohort.
Abstract

More Related Videos

Cystometric and External Urethral Sphincter Measurements in Awake Rats with Implanted Catheter and Electrodes Allowing for Repeated Measurements10:07

Cystometric and External Urethral Sphincter Measurements in Awake Rats with Implanted Catheter and Electrodes Allowing for Repeated Measurements

Published on: January 30, 2018

Related Concept Videos

Urodynamic Studies: Uroflowmetry01:19

Urodynamic Studies: Uroflowmetry

Uroflowmetry is a non-invasive urodynamic test designed to measure various aspects of urination, including volume, flow rate, and the time to void. This test is crucial for diagnosing and assessing conditions such as bladder outlet obstruction, bladder dysfunction, incomplete bladder emptying, incontinence, and urinary tract blockages caused by benign prostatic hyperplasia (BPH) and urethral strictures.Pre-Test Instructions:Before a uroflowmetry test, patients are typically advised to drink...
The Micturition Reflex01:26

The Micturition Reflex

Urination, or micturition involves the coordination of the bladder's detrusor muscle and two sphincters to ensure controlled bladder emptying.
The process begins with bladder filling, where the bladder wall stretches as urine accumulates. This stretching activates the urine storage reflex, mediated by the sacral spinal segments and the pontine storage center. Efferent sympathetic impulses stimulate the detrusor muscle to relax and the internal urethral sphincter to contract, facilitating urine...
Assessment of the Rectum and Anus01:25

Assessment of the Rectum and Anus

Evaluating the rectum and anus plays a crucial role in conducting a thorough physical examination of the gastrointestinal system. Although it may be uncomfortable and often embarrassing for the patient, it holds immense diagnostic value, particularly in detecting gastrointestinal diseases and abnormalities. This guide will explain how to perform this assessment using inspection and palpation methods.
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...
Urinary Bladder01:23

Urinary Bladder

The urinary bladder is a hollow, muscular sac that temporarily stores urine before it is expelled from the body. It can hold approximately 600 mL of urine prior to micturition. The bladder is retroperitoneal and located behind the pubic symphysis in the pelvic floor.
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

Imaging Studies VI: Voiding Cystourethrography and Cystography

Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...
Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...