Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

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...
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 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...
Anatomy of the Genitourinary System II: Bladder and Urethra01:19

Anatomy of the Genitourinary System II: Bladder and Urethra

The lower urinary system consists of the urinary bladder and urethra, which are essential in storing and expelling urine from the body. Together with the internal and external sphincters, these structures work together to regulate urination effectively.Anatomy of the BladderThe urinary bladder is a muscular, stretchable organ behind the pubic bone and in front of the rectum. In females, the bladder is positioned anterior to the vagina and inferior to the uterus, while in males, it is located...
Disorders of the Urinary System01:20

Disorders of the Urinary System

The urinary system is responsible for eliminating waste and excess fluids from the body. However, disorders of the urinary system can arise due to various reasons like infections, stress, age, congenital abnormalities, and lifestyle.
Urinary tract infections (UTIs) are one of the most common urinary system disorders. They are caused by bacteria that enter the urethra and can spread to the bladder resulting in cystitis. Pyelonephritis is the result of a UTI that has ascended to the level of the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Standardizing terminology and management of testicular developmental disorders: A comprehensive review and international expert consensus.

Journal of pediatric urology·2026
Same author

Can urinary exosomal lncRNAs HOTAIR and MALAT1 predict surgical need and outcomes in unilateral antenatal hydronephrosis?

Pediatric surgery international·2026
Same author

Complementary ROC-Derived Indices for Screening Improper Expression Profiles in RNA-Seq Differential Expression Analysis.

Balkan medical journal·2026
Same author

Clinical Significance of Achieving No Evidence of Disease in HER2-Positive Metastatic Breast Cancer: A Multicenter Study by Turkish Oncology Group (TOG).

Cancers·2026
Same author

Contrast-Enhanced Mammography vs. Breast MRI for Assessing Neoadjuvant Chemotherapy Response: A Prospective Clinical Comparison Study.

Diagnostics (Basel, Switzerland)·2026
Same author

Differential Metastatic Patterns and Prognostic Value of Systemic Inflammation Scores in Anaplastic Lymphoma Kinase Rearranged Versus Anaplastic Lymphoma Kinase Negative Non-Small Cell Lung Cancer.

Cancers·2026

Related Experiment Video

Updated: Jul 5, 2026

Detrusor Underactivity Model in Rats by Conus Medullaris Transection
03:26

Detrusor Underactivity Model in Rats by Conus Medullaris Transection

Published on: August 28, 2020

Positional changes in voiding dynamics of children with non-neurogenic bladder dysfunction.

Nihat Uluocak1, Tayfun Oktar, Omer Acar

  • 1Department of Urology, Gaziosmanpasa University School of Medicine, Merkez/Tokat, Turkey. nihatuluocak@gmail.com

Urology
|May 27, 2008
PubMed
Summary

Voiding positions significantly impact bladder dysfunction dynamics in children. Sitting and squatting positions improved urinary flow rates and reduced pressure in girls compared to boys.

More Related Videos

Nerve-sparing Mid-urethral Obstruction (NeMO) in Female Small Rodents
07:42

Nerve-sparing Mid-urethral Obstruction (NeMO) in Female Small Rodents

Published on: April 25, 2017

Related Experiment Videos

Last Updated: Jul 5, 2026

Detrusor Underactivity Model in Rats by Conus Medullaris Transection
03:26

Detrusor Underactivity Model in Rats by Conus Medullaris Transection

Published on: August 28, 2020

Nerve-sparing Mid-urethral Obstruction (NeMO) in Female Small Rodents
07:42

Nerve-sparing Mid-urethral Obstruction (NeMO) in Female Small Rodents

Published on: April 25, 2017

Area of Science:

  • Pediatric Urology
  • Urodynamics
  • Bladder Dysfunction

Background:

  • Non-neurogenic bladder dysfunction is common in children.
  • Standard urodynamic assessments typically use a single voiding position.
  • The influence of voiding posture on pediatric voiding dynamics is not well-established.

Purpose of the Study:

  • To investigate the effect of different voiding positions on voiding dynamics in children with non-neurogenic bladder dysfunction.
  • To compare pressure-flow parameters across various postures.

Main Methods:

  • 29 children (10 male, 19 female) with non-neurogenic overactive bladder participated.
  • Voiding dynamics including maximum urinary flow rate (Qmax), detrusor pressure (Pdet-Qmax), and intra-abdominal pressure (Pabd-Qmax) were measured in sitting, squatting, and standing (males only) positions.
  • Measurements were repeated with and without a catheter, and residual urine was assessed via ultrasonography.

Main Results:

  • Girls exhibited significantly higher mean Pdet-Qmax in sitting (43.11 cm H2O) and squatting (35.21 cm H2O) positions compared to boys (P = .028).
  • Girls demonstrated significantly higher Qmax in sitting and squatting positions compared to boys.
  • The presence of a catheter significantly reduced mean Qmax in both sitting and squatting positions.

Conclusions:

  • This study is the first to show that voiding positions affect pressure flow study results in children.
  • Voiding dynamics in children with non-neurogenic bladder dysfunction are demonstrably influenced by posture.