[Comparative bacteriological examinations of bladder-puncture and middle-stream urine].

In 100 patients the bacteriological results of the urine got by suprapubic puncture of the urinary bladder were compared with the results of the mid-stream urine. In the vesicular urine the proportion of the urine samples infected as well as of the mixed flora is essentially lower so that, in contrast to the mid-stream urine, it gives more reliable findings. According to this the puncture of the urinary bladder should be used more frequently, particularly in certain groups of patients. A comparison of the bacteriological investigation of the vesicular urine with the semiquantitative investigation of the sediments of the mid-stream urine resulted in a large proportion of pathological sediments of the urine when the vesicular urine was sterile so that the reliability of this investigation appears restricted in its modern form of performance.