The amount of leftover (residual) urine can be measured by draining the
bladder with a thin flexible tube (catheter) or by using ultrasound. The
catheter method has a slight risk of causing infection or injury to the tube
leading from the bladder (urethra). But the catheter method is safe when
done carefully, and it may be less expensive than ultrasound.
It isn't clear how the results of the PVR test can be used to
predict outcomes in men with
WebMD Medical Reference from Healthwise
March 23, 2010
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