Normality in urodynamics studied in healthy adults

Abstract

Purpose: Urodynamic data were evaluated prospectively in symptom-free adults.

Materials and methods: A total of 28 men and 10 women with no history, symptoms or signs of urological disease and a mean age of 24 years were included in the study. Free flow, cystometry and pressure flow studies were performed using standard techniques.

Results: A wide variation was found in all urodynamic parameters. Different and changing flow patterns, low maximum flow rate, large bladder capacity, bladder overactivity and residual urine, which are all usually considered signs of pathological conditions, were seen. Data from free flow and pressure flow studies correlated significantly but maximum flow rate was significantly lower, and voiding time and flow time were significantly longer in pressure flow studies.

Conclusions: Technical urodynamics in their actual form are not physiological but they are the best tests available. Since normality in urodynamics may include so many different features the interpretation of technical urodynamic investigations should be made with caution.