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How does the ultrasound method for a post-void residual urine test work?

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With this method, after you pee, the nurse will hold the ultrasound wand against your belly. Pictures of your bladder will show up on a monitor, and your doctor will use them to measure the urine there.

This method has a few advantages over the catheter method.

But an ultrasound might not work for some people. For example, if you’re obese, the machine may not be able to get clear pictures of your bladder.

  • Because nothing goes inside your body, there’s no chance of injury or infection.
  • The sound waves are painless.
  • The nurse doesn’t need to see your private parts.
  • It’s safer for children and doesn’t stress them out as much.

From: What Is a Post-Void Residual Urine Test? WebMD Medical Reference

SOURCES:

Reviews in Urology : “Evaluation of Voiding Dysfunction and Measurement of Bladder Volume.”

National Institute of Diabetes and Digestive and Kidney Diseases: “Urodynamic Testing,” “Urinary Tract Imaging.”

Ontario Health Technology Assessment Series: “Portable Bladder Ultrasound: An Evidence-Based Analysis.”

Canadian Family Physician: “Ultrasound bladder scanner presents falsely elevated postvoid residual volumes.”

Cleveland Clinic: “Bladder Outlet Obstruction.”

Reviewed by Minesh Khatri on February 12, 2018

SOURCES:

Reviews in Urology : “Evaluation of Voiding Dysfunction and Measurement of Bladder Volume.”

National Institute of Diabetes and Digestive and Kidney Diseases: “Urodynamic Testing,” “Urinary Tract Imaging.”

Ontario Health Technology Assessment Series: “Portable Bladder Ultrasound: An Evidence-Based Analysis.”

Canadian Family Physician: “Ultrasound bladder scanner presents falsely elevated postvoid residual volumes.”

Cleveland Clinic: “Bladder Outlet Obstruction.”

Reviewed by Minesh Khatri on February 12, 2018

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