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

Assessing Blood pressure using a doppler ultrasound01:19

Assessing Blood pressure using a doppler ultrasound

To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Physiology of Urine Formation01:24

Physiology of Urine Formation

Urine formation is an essential function of the human body. It plays a critical role in maintaining homeostasis by regulating the volume and composition of body fluids. The kidneys, the primary organs involved in this process, filter blood to remove waste products and excess substances, ultimately producing urine.
Glomerular Filtration
The first stage in urine formation is glomerular filtration. Each kidney contains approximately 1 million nephrons, the functional units of filtration, with a...
Physiology of the Genitourinary System I: Renal Blood Flow and Glomerular Filtration01:29

Physiology of the Genitourinary System I: Renal Blood Flow and Glomerular Filtration

The kidneys are vital organs responsible for regulating blood filtration, waste excretion, and fluid balance, all of which are crucial for maintaining homeostasis. Renal physiology examines renal blood flow, glomerular filtration, and urine formation, ensuring the body’s internal environment remains stable.Renal Blood FlowThe kidneys receive about 20-25% of the cardiac output, typically around 1200 mL of blood per minute in an average adult. Blood flows into the kidneys through the renal...
Physiology of the Genitourinary System III: Urine Concentration and Dilution01:20

Physiology of the Genitourinary System III: Urine Concentration and Dilution

The kidneys concentrate or dilute urine to maintain water and electrolyte balance. Nephrons, particularly the loop of Henle, play a crucial role in this process through the countercurrent multiplication system. This system establishes a high osmolarity in the renal medulla, which is essential for water reabsorption. In the loop of Henle’s descending limb, water is reabsorbed into the surrounding medulla due to its permeability to water. In contrast, the ascending limb actively transports...
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...
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...

You might also read

Related Articles

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

Sort by
Same author

Pulsed-field ablation versus thermal ablation in the management of atrial fibrillation: A narrative review.

Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing·2026
Same author

Clinical and Genetic Spectrum of Filippi Syndrome: A Systematic Review of Published Case Reports and Case Series.

Health science reports·2026
Same author

Validation of the immune-mediated colitis endoscopic score using a retrospective cohort of patients with immune-mediated colitis.

iGIE : innovation, investigation and insights·2026
Same author

Bioprospection of Metschnikowia species as a biocontrol agent against AFB<sub>1</sub> contamination.

Scientific reports·2026
Same author

Missed Opportunities for Childhood Immunization in Pakistan: Failure to Vaccinate Despite Health System Contact.

Gates open research·2026
Same author

Feasibility and Cost Effectiveness of a Program for Medically and Socially Complex Patients in the Emergency Department.

Academic emergency medicine : official journal of the Society for Academic Emergency Medicine·2026

Related Experiment Video

Updated: Jun 27, 2026

Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test
06:35

Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test

Published on: April 27, 2016

17.4K

Uroflowmetry: nomograms in healthy young Pakistani men.

Masood Ahmed Sheikh1, Shahzad Ali1, Ayesha Khan1

  • 1Department of Urological Surgery and Transplantation , Jinnah Postgraduate medical Centre , Karachi.

JPMA. the Journal of the Pakistan Medical Association
|October 16, 2024
PubMed
Summary

This study developed a nomogram to predict maximal urine flow rate in young Pakistani men. The findings establish a reliable tool for assessing urinary function in this demographic.

Keywords:
Nomogram, Maximum flow rate, Lower urinary tract symptoms, Pakistan.

More Related Videos

Measuring the Carotid to Femoral Pulse Wave Velocity Cf-PWV to Evaluate Arterial Stiffness
05:51

Measuring the Carotid to Femoral Pulse Wave Velocity Cf-PWV to Evaluate Arterial Stiffness

Published on: May 3, 2018

17.4K
Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
05:25

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Published on: August 14, 2019

19.1K

Related Experiment Videos

Last Updated: Jun 27, 2026

Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test
06:35

Ultrasound Assessment of Endothelial Function: A Technical Guideline of the Flow-mediated Dilation Test

Published on: April 27, 2016

17.4K
Measuring the Carotid to Femoral Pulse Wave Velocity Cf-PWV to Evaluate Arterial Stiffness
05:51

Measuring the Carotid to Femoral Pulse Wave Velocity Cf-PWV to Evaluate Arterial Stiffness

Published on: May 3, 2018

17.4K
Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
05:25

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Published on: August 14, 2019

19.1K

Area of Science:

  • Urology
  • Andrology
  • Medical Statistics

Background:

  • Lower urinary tract symptoms (LUTS) assessment often relies on uroflowmetry.
  • Establishing normative data for uroflowmetry parameters is crucial for accurate diagnosis.
  • A nomogram can provide a visual and statistical tool for interpreting uroflowmetry results.

Purpose of the Study:

  • To develop a nomogram for predicting maximal urine flow rate in healthy young males.
  • To establish reference values for voided volume and flow rates in a Pakistani male population.
  • To utilize statistical modeling for creating a predictive tool for urological assessment.

Main Methods:

  • A prospective, cross-sectional study involving healthy young males without LUTS.
  • Uroflowmetry was performed to measure maximum flow rate, average flow rate, and void volume.
  • A best-fit regression model was used to formulate the uroflowmetry nomogram.

Main Results:

  • Data from 432 healthy young Pakistani males were analyzed.
  • Mean maximum flow rate, average flow rate, and void volume were recorded.
  • A statistically significant association between age and uroflowmetry parameters was observed, leading to a predictive model.

Conclusions:

  • The developed nomograms reliably predict maximal flow rate in young Pakistani men.
  • This tool can aid in the early detection and management of potential lower urinary tract dysfunction.
  • The study provides valuable normative data for uroflowmetry in the specified population.