[Ultrasonic echography as a diagnostic measure before supra-pubic bladder puncture]

It is reported on 40 punctures of the bladder after previous ultrasound diagnostics. In all cases the puncture could be performed successfully without failure at a filling stage of the bladder of 250 to 300 ml. By this possibility to puncture the bladder at a physiological filling stage changes of the urine tests were avoided which appear by the often recommended methods for the increase of diuresis.