Urology & Urogynecology > Education and Reference

CLINICAL APPLICATION NOTES

Introduction to Urodynamics III: Urodynamic Procedures

Urodynamic Procedures

In the lower urinary tract, the typical urodynamic procedures performed include:

- Uroflowmetry
- Cystometrogram (CMG)
- Valsalva Leak Point Pressure (VLPP)
- Pressure-Flow
- Urethral Pressure (UP) / Urethral Pressure Profile (UPP)
- Electromyography (EMG) - as an additional paramater
- Video Urodynamics

The one procedure performed in the upper urinary tract is the Whitaker Test.

ICS Terms for Urodynamics

Q:	flow
QVol:	voided volume
pves:	vesical or bladder pressure
pabd:	abdominal pressure
pdet:	detrusor muscle pressure/activity
pura:	urethral pressure
pclo:	urethral closure pressure
IVol:	computed (infused) volume
EMG:	external sphincter electromyography

Urodynamic Equipment

Urodynamic equipment comes in a variety of shapes and sizes. Strip chart recorders mounted on an IV pole were some of the earliest urodynamic equipment but are not too common now. Following are photos of two Life-Tech urodynamic systems.

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Intro to Urodynamics TOC

Lower Urinary Tract Anatomy and Physiology

Clinical Indications and Preparation

Urodynamic Procedures