Measurement of post-voiding residual urine and/or bladder capacity by ultrasound, non-imaging
CPT4 code
Name of the Procedure:
Measurement of Post-Void Residual (PVR) Urine and Bladder Capacity by Ultrasound, Non-Imaging
Summary
This procedure measures the amount of urine left in your bladder after you have urinated and determines your bladder's capacity without creating an actual image. Instead of visualizing the bladder, the ultrasound device calculates the volume by measuring sound waves as they bounce off the bladder.
Purpose
This procedure helps diagnose conditions like urinary retention, which can be due to a variety of reasons such as bladder dysfunction, obstruction, or nerve problems. By knowing how much urine remains in your bladder and your bladder's overall capacity, doctors can tailor treatment options more effectively.
Indications
- Frequent urination
- Difficulty emptying the bladder completely
- Incontinence (lack of bladder control)
- Recurring urinary tract infections (UTIs)
- Symptoms suggestive of bladder outlet obstruction or neurogenic bladder
Preparation
- Generally, no special preparation is needed.
- You may be asked to arrive with a moderately full bladder.
- Inform the healthcare provider about all medications you are taking.
- Wear comfortable clothing.
Procedure Description
- You will be asked to urinate as you normally would.
- After you urinate, you will lie down on an examination table.
- A healthcare professional will apply a water-based gel to your lower abdomen.
- A handheld ultrasound device (transducer) will be placed on your abdomen.
- The device sends sound waves through the skin and into the bladder area.
- The machine calculates the amount of urine left in your bladder and its capacity based on the sound waves' echo return.
- Measurements are immediately available.
Duration
The procedure typically takes about 10-15 minutes.
Setting
This procedure can be performed in various settings, including outpatient clinics, hospital urology departments, and sometimes in primary care offices.
Personnel
- A trained nurse or ultrasound technician usually performs the procedure.
- In some instances, a urologist or primary care physician may also be involved.
Risks and Complications
- The procedure is non-invasive and has minimal risks.
- Rarely, discomfort might occur due to the pressure of the transducer.
Benefits
- Instant results.
- Helps diagnose conditions like urinary retention and evaluate bladder function.
- Guides subsequent treatment or management strategies.
Recovery
- No specific post-procedure care is required.
- You can resume normal activities immediately.
- Follow-up appointments may be scheduled to discuss findings and treatment plans.
Alternatives
- Invasive catheterization to measure post-void residual urine (more uncomfortable and carries a higher risk of infection).
- Imaging ultrasound of the bladder (takes longer and involves more equipment).
- Urodynamic studies (more comprehensive but also more invasive and time-consuming).
Patient Experience
- The procedure is generally painless.
- You might feel slight pressure when the transducer moves on your abdomen.
- The gel might feel cool initially.
- Overall, it's quick and comfortable, with minimal discomfort.