Name of the Procedure:

Duplex Scan of Upper Extremity Arteries or Arterial Bypass Grafts
Common name(s): Ultrasound Doppler of arm arteries, Doppler ultrasound of arterial bypass grafts

Summary

A duplex scan is a non-invasive imaging procedure that uses ultrasound technology to visualize the arteries in the upper extremities (arms). It can also be used to examine arterial bypass grafts. It provides information on blood flow and vessel structure.

Purpose

The duplex scan addresses conditions related to blocked, narrowed, or damaged arteries in the arms. It aims to determine the presence and severity of any arterial issues, ensuring proper blood flow.

Indications

The procedure is indicated for:

• Symptoms of poor circulation (e.g., pain, numbness, weakness in the arm)
• Suspected arterial blockage or narrowing
• Post-surgical evaluation of arterial bypass grafts
• Monitoring known arterial diseases

Preparation

• Wear comfortable clothing.
• No fasting or special preparation typically required.
• Medication adjustments usually not necessary, but follow specific instructions from your healthcare provider.

Procedure Description

1. The patient will lie on an exam table, and a water-based gel is applied to the skin over the area being examined.
2. A transducer (handheld device) is moved over the gel-covered area.
3. The device sends high-frequency sound waves into the body, capturing images of the arteries and measuring blood flow.
4. The technologist will record images and measurements for analysis.

No anesthesia or sedation is required as the procedure is painless.

Duration

The procedure typically takes about 30-45 minutes.

Setting

It is performed in an outpatient clinic or a hospital imaging department.

Personnel

• Vascular technologist or ultrasound technician performs the scan.
• A radiologist or a vascular surgeon interprets the results.

Risks and Complications

• No known risks or complications as the procedure is non-invasive and uses sound waves.

Benefits

• Accurate and detailed assessment of arterial health.
• Immediate results, which can lead to swift treatment decisions.
• Non-invasive and painless.

Recovery

• No recovery time required.
• Patients can resume normal activities immediately after the procedure.

Alternatives

• CT Angiography: Provides detailed images but involves radiation exposure and contrast dye.
• MR Angiography: Offers detailed images without radiation but may be contraindicated in patients with metal implants.
• Traditional Angiography: Invasive with higher risk but offers very detailed images.

Patient Experience

• The patient will feel minimal discomfort from the gel and transducer on the skin.
• No pain involved during the procedure.
• Post-procedure, the gel is wiped off, and the patient can leave immediately.