Bladder Ultrasound and Post Void Residual


Bladder Ultrasound and Post Void Residual (PVR) is for patients who have urinary retention problems (inability to empty the bladder completely) post-void residual measurement is a way to evaluate the amount of urine remaining in the bladder once urination (or voiding) has occurred. Post-void residual (PVR) urine volume is the volume remaining in the bladder immediately after completion of voiding.

The procedure is usually done within five to ten minutes after urination and can be done with a physical exam, an ultrasound or catheterization. If a patient has high post-void residual volume of urine left in the bladder, it could indicate a urinary tract infection, a renal deficiency or benign prostatic hyperplasia(BPH). The condition may also be caused by certain drugs or medications or by certain disorders such as multiple sclerosis, diabetes or Parkinson’s.

What to expect during the ultrasound

This study is done with an ultrasound. You will be asked to lie flat on the exam table. Gel is placed on the skin over your bladder. The ultrasound probe will be placed over this area, and a recording will be made. You will have no side effects as a result of this study, and your doctor will be able to go over the results with you immediately. It usually takes just a minute or so.