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Related Concept Videos

Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

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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...
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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.
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Changes in bladder function with time following cystostomy in rats.

Yu Lin He1,2, Yan Chen1,2, Yi Bo Wen1,2

  • 1Department of Urology, Pediatric Urodynamic Centre, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.

Neurourology and Urodynamics
|November 30, 2019
PubMed
Summary
This summary is machine-generated.

Optimal bladder function evaluation in conscious rats after cystostomy is between 5 and 15 days post-procedure. This window reveals stable bladder parameters and minimal inflammation, crucial for accurate cystometry studies.

Keywords:
HE stainingMasson stainingbladdercollagencystometrycystostomyrat

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Area of Science:

  • Urology
  • Physiology
  • Surgical Research

Background:

  • Cystostomy is a surgical procedure that can impact bladder function.
  • Understanding the temporal changes in bladder function post-cystostomy is essential for accurate physiological assessments.
  • Previous studies have not clearly defined the optimal window for cystometric evaluation after cystostomy.

Purpose of the Study:

  • To investigate bladder function patterns in conscious rats following cystostomy.
  • To determine the most appropriate time frame for cystometric evaluation of bladder function after this procedure.

Main Methods:

  • Cystostomy was performed on rats, followed by cystometry at various time points.
  • Key urodynamic parameters including basal bladder pressure, maximum bladder pressure, voiding interval, bladder capacity, and voided volume were recorded.
  • Bladder tissue was analyzed histopathologically (hematoxylin-eosin, Masson staining) to assess inflammation and collagen deposition.

Main Results:

  • Bladder function parameters showed dynamic changes in the initial days post-cystostomy, with significant decreases in bladder capacity and voided volume.
  • From day 5 to 15 post-cystostomy, urodynamic parameters stabilized, with no significant differences from control values for bladder capacity, voided volume, and post-voiding residual urine.
  • Histopathology revealed severe acute inflammation early post-procedure, resolving to mild inflammation by days 5-15, with increased collagen deposition by day 21.

Conclusions:

  • The period between 5 and 15 days post-cystostomy represents a stable window for assessing bladder function in conscious rats.
  • This time frame is characterized by normalized urodynamic parameters and reduced inflammation, making it ideal for cystometric evaluations.
  • Cystostomy leads to transient bladder dysfunction and inflammation, which gradually resolves over several weeks.