Telemetric urodynamic investigations in normal males.

To study the applicability of telemetry in urodynamics, 10 healthy males were evaluated by both standard and telemetric urodynamic techniques. TV observation made correlation of the data with the actual situation possible. During bladder filling, intravesical pressure could be registrated in a lying, sitting and standing position. Stress conditions such as walking, running, climbing steps, kneebends, push-ups and even handstands were tested. Detrusor instability was detected with telemetric techniques in 6 volunteers, while regular cystometry showed evidence of instability in only 2 cases. Desire to void occurred in telemetric studies at lower bladder volume than in regular cystometry. A normal voiding phase was registered in all telemetric investigations, while 3/10 men displayed an abnormal micturition pattern in regular sitting cystometry. The advantages of telemetric urodynamic investigations are: (1) simulation of several stress conditions because of the patient's independence of stationary laboratory equipment; (2) lowered psychogenic stress as the patient is left undisturbed and can urinate in a normal position and (3) 24-hour investigations. It is indicated in (1) incontinence if no urine loss can be detected by regular cystometry; (2) micturition disorders in psychogenic inhibition of micturition is suspected, and (3) enuresis if 24-hour investigations are desired.