Urology & Urogynecology > Education and Reference

Voiding PRESSURE-FLOW studies provide definitive diagnostic information for the EMPTYING PHASE of the micturition cycle. This includes the ability of:

• The detrusor to maintain a stable contraction during voiding
• The internal and external sphincters, as well as the urethral striated muscle, to relax appropriately

ICS Terms for Pressure-Flow:

Q	flow
pves	vesical or bladder pressure
pabd	abdominal pressure
pdet	detrusor muscle pressure/activity
EMG	external sphincter electromyography

CMG / Pressure Flow Study

Pressure-Flow Study

Pressure-Flow Analysis (Measurements and Observations):

Pressure-Flow Nomograms and Plots

Pressure-Flow Analysis (Observations/Interpretation) Samples: