Ultrasound, transplanted kidney, real time and duplex Doppler with image documentation
CPT4 code
Name of the Procedure:
Ultrasound, transplanted kidney, real-time and duplex Doppler with image documentation
Summary
An ultrasound for a transplanted kidney uses sound waves to create real-time images and measure blood flow through the kidney's blood vessels. It's a non-invasive procedure that helps monitor the function and health of a transplanted kidney.
Purpose
This procedure assesses the blood flow and function of a transplanted kidney. It helps detect complications such as rejection, blood clots, or other issues that may impair the kidney's function. The goal is to ensure the transplanted kidney is functioning well and to provide prompt treatment if issues are detected.
Indications
- Signs of kidney transplant rejection
- Symptoms of kidney dysfunction (e.g., decreased urine output, pain, swelling)
- Monitoring routine kidney transplant follow-up
- Investigation of abnormalities in blood tests indicating kidney function
Preparation
- No fasting or specific preparation is typically required.
- The patient should wear comfortable clothing and may need to change into a hospital gown.
- Pre-procedure assessments might include blood tests to check kidney function.
Procedure Description
- The patient will lie down on an examination table.
- A water-based gel will be applied to the skin over the transplant site.
- A handheld device called a transducer will be moved over the area to send and receive sound waves.
- Real-time images of the kidney and its blood flow will be displayed on a monitor.
- The duplex Doppler will measure the speed and direction of blood flow.
- Images and measurements will be documented for analysis.
Duration
The procedure typically takes about 30 to 60 minutes.
Setting
It is usually performed in a hospital's radiology department or an outpatient imaging center.
Personnel
- Radiologist or sonographer to perform the ultrasound
- Nephrologist or transplant specialist to interpret the results
Risks and Complications
- Generally safe with no significant risks
- Rarely, patients may feel slight discomfort from the transducer's pressure
- Allergic reaction to the gel (extremely rare)
Benefits
- Non-invasive with no radiation exposure
- Immediate visualization of kidney structure and blood flow
- Early detection and management of complications
Recovery
- No recovery time is needed; patients can typically resume normal activities immediately.
- Follow-up appointments may be scheduled based on the findings.
Alternatives
- CT scan or MRI, both providing detailed images but requiring more preparation and possibly exposure to contrast agents.
- Blood tests to monitor kidney function, though less specific in diagnosing vascular issues.
Patient Experience
- The procedure is generally painless.
- The gel might feel cold, and there can be slight discomfort from the transducer pressure.
- Any discomfort is usually minimal and temporary.
- Patients can communicate with the technician during the exam for comfort adjustments.