Question

A patient presents with sudden–onset right leg pain. An investigation was done, and the obtained image is shown below. What is the investigation?

• A. A digital subtraction angiography
• B. Ultrasound doppler
• C. MR angiography
• D. Plethysmography

Answer 1

The Correct Option is B

To determine the correct investigation for a patient with sudden-onset right leg pain, we need to consider the image mentioned and the available options. The investigation method referred to is Ultrasound doppler.

This method is commonly used to assess blood flow and detect blockages or clots in blood vessels, making it suitable for evaluating conditions like a possible thrombosis or occlusion in the leg arteries, causing the patient's pain. Below is a brief explanation of the choices and why they are or aren't suitable:

• Digital Subtraction Angiography (DSA): Though used for vascular imaging, it's invasive and typically not the first choice for acute limb pain.
• Ultrasound Doppler: Non-invasive, cost-effective, and provides real-time information about blood flow, making it apt for acute conditions like these.
• MR Angiography: Also for vascular imaging but more suitable for detailed analysis after initial investigations like a Doppler.
• Plethysmography: Mainly assesses volume changes in an organ, less commonly used for acute assessment of leg pain.

Therefore, based on the provided image and context, Ultrasound Doppler is the investigation performed.