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

Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

Imaging Studies VI: Voiding Cystourethrography and Cystography

2.2K
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...
2.2K
Urodynamic Studies: Uroflowmetry01:19

Urodynamic Studies: Uroflowmetry

5.2K
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...
5.2K
Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

605
Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
605
Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

533
IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
533
Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

1.8K
IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
1.8K
Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

288
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)...
288

You might also read

Related Articles

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

Sort by
Same author

Sacral Neuromodulation for Refractory Overactive Bladder: Closing the Gaps in Anatomy, Mechanisms, and Parameter Selection.

Advances in therapy·2026
Same author

Technique for Implantable Tibial Nerve Stimulator Placement.

International urogynecology journal·2026
Same author

Cost-effectiveness of Antibacterial Envelope for Sacral Neuromodulation Infection Prevention.

Urogynecology (Philadelphia, Pa.)·2026
Same author

Stool Microbiota, Metabolites, and Fecal Incontinence in Women.

Urogynecology (Philadelphia, Pa.)·2026
Same author

Symptoms and subtypes of patients with lower urinary tract dysfunction - insights from the Symptoms of Lower Urinary Tract Dysfunction Research Network.

Nature reviews. Urology·2026
Same author

The Administrative Burden of Overactive Bladder Medications.

Urogynecology (Philadelphia, Pa.)·2026
Same journal

SMA's 6th Annual Physicians-in-Training Leadership Conference Abstract Presentations.

Southern medical journal·2026
Same journal

Potential Impact of Lower Federal Loan Availability on Medical Education in Appalachia.

Southern medical journal·2026
Same journal

Experiential Mentorship Skills Training: The Effect on Real-Life Mentoring.

Southern medical journal·2026
Same journal

Social Pressure: How Early Social Context Shapes Career Interest in Medicine.

Southern medical journal·2026
Same journal

Comparing Speed and Accuracy of Artificial Intelligence Large Language Models on the Orthopedic In-Training Examination.

Southern medical journal·2026
Same journal

Don't Wait to Talk about Weight: A 2-Hour Interactive Curriculum Improves Medical Student Skills with Weight Management.

Southern medical journal·2026
See all related articles

Related Experiment Video

Updated: Feb 17, 2026

Urethral Stricture Induction Followed by Buccal Mucosa Graft Urethroplasty in a Rat Model
05:09

Urethral Stricture Induction Followed by Buccal Mucosa Graft Urethroplasty in a Rat Model

Published on: April 28, 2023

1.6K

Improving Postoperative Efficiency: An Algorithm for Expedited Void Trials After Urogynecologic Surgery.

A Rebecca Meekins1, Nazema Y Siddiqui1, Cindy L Amundsen1

  • 1From the Departments of Obstetrics and Gynecology and Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina, and the Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill.

Southern Medical Journal
|December 3, 2017
PubMed
Summary
This summary is machine-generated.

A new algorithm for void trials after urogynecologic surgery can reduce the need for postvoid residual volume (PVR) assessment. Voided volumes of ≥200 mL indicate success, while <100 mL indicates failure, potentially eliminating PVR in 85% of patients.

More Related Videos

Vessel-sparing Excision and Primary Anastomosis
08:09

Vessel-sparing Excision and Primary Anastomosis

Published on: January 7, 2019

12.1K
Photoselective Vaporesection of the Prostate via an End-firing Lithium Triborate Crystal Laser
07:17

Photoselective Vaporesection of the Prostate via an End-firing Lithium Triborate Crystal Laser

Published on: May 9, 2018

8.5K

Related Experiment Videos

Last Updated: Feb 17, 2026

Urethral Stricture Induction Followed by Buccal Mucosa Graft Urethroplasty in a Rat Model
05:09

Urethral Stricture Induction Followed by Buccal Mucosa Graft Urethroplasty in a Rat Model

Published on: April 28, 2023

1.6K
Vessel-sparing Excision and Primary Anastomosis
08:09

Vessel-sparing Excision and Primary Anastomosis

Published on: January 7, 2019

12.1K
Photoselective Vaporesection of the Prostate via an End-firing Lithium Triborate Crystal Laser
07:17

Photoselective Vaporesection of the Prostate via an End-firing Lithium Triborate Crystal Laser

Published on: May 9, 2018

8.5K

Area of Science:

  • Urology
  • Gynecology
  • Surgical Outcomes

Background:

  • Post-surgical void trials are crucial for assessing bladder function.
  • Postvoid residual volume (PVR) assessment is a common but sometimes burdensome method.
  • Minimizing PVR assessment can improve patient experience and resource utilization.

Purpose of the Study:

  • To establish a relationship between voided volume and void trial success.
  • To develop an algorithm for backfill-assisted void trials.
  • To minimize the necessity of postvoid residual volume (PVR) assessments.

Main Methods:

  • Ancillary analysis of deidentified data from a randomized trial.
  • Void trials involved backfilling the bladder and immediate voiding attempts.
  • Voided volumes, PVR measurements, and trial outcomes were collected and analyzed.

Main Results:

  • Voided volumes <100 mL predicted trial failure with high negative predictive value (NPV).
  • Voided volumes ≥200 mL predicted trial success with high positive predictive value (PPV).
  • The proposed algorithm could have eliminated PVR assessment in 85% of the study population.

Conclusions:

  • An algorithm using voided volume thresholds can guide void trial outcomes.
  • Voided volumes ≥200 mL suggest successful voiding, negating PVR need.
  • Voided volumes <100 mL suggest trial failure, necessitating catheterization.