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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...
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Related Experiment Video

Updated: Jul 7, 2026

A Novel Surgical Technique in a Sheep Model for Suburethral Graft Implantation
13:45

A Novel Surgical Technique in a Sheep Model for Suburethral Graft Implantation

Published on: June 20, 2025

Predicting early voiding dysfunction after tension-free vaginal tape.

J R A Duckett1, A Patil, N S Papanikolaou

  • 1Department of Obstetrics and Gynaecology, Medway Maritime Hospital, Gillingham, UK.

Journal of Obstetrics and Gynaecology : the Journal of the Institute of Obstetrics and Gynaecology
|February 9, 2008
PubMed
Summary
This summary is machine-generated.

Predicting early postoperative voiding dysfunction after tension-free vaginal tape (TVT) surgery is challenging. Factors like non-detrusor voiding, low preoperative flow rates, and general anesthesia showed statistical links but had low predictive value.

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Transvaginal Mesh Insertion in the Ovine Model
10:32

Transvaginal Mesh Insertion in the Ovine Model

Published on: July 27, 2017

Area of Science:

  • Urology
  • Gynecology
  • Surgical Innovation

Background:

  • Postoperative voiding dysfunction is a common complication following anti-incontinence surgery.
  • Accurate prediction of this complication is crucial for patient management and surgical planning.

Purpose of the Study:

  • To identify predictive factors for early postoperative voiding dysfunction before tension-free vaginal tape (TVT) insertion.
  • To evaluate the efficacy of preoperative parameters in predicting voiding difficulties.

Main Methods:

  • Prospective data collection from 500 women undergoing TVT procedures.
  • Analysis of demographic data, surgical history, anesthesia type, and urodynamic studies.
  • Application of univariate analysis and stepwise multiple logistic regression.

Main Results:

  • Early postoperative voiding dysfunction occurred in 5.8% of patients.
  • Predictive factors identified: voiding by other than detrusor contraction (p=0.02), preoperative pressure flow rate <15 ml/s (p=0.04), and general anesthesia (p=0.02).
  • Positive predictive values for these factors were low (11.4%–16.1%), limiting accurate prediction.

Conclusions:

  • While certain preoperative factors are statistically associated with early postoperative voiding dysfunction after TVT, their low positive predictive values hinder reliable clinical prediction.
  • Further research may be needed to identify more robust predictors for this complication.