Cardiac Vascular Nursing Certification Practice Exam 2026 – Your All-in-One Guide to Exam Success!

The ankle-brachial index (ABI) at rest is the first non-invasive test typically utilized to assess peripheral artery disease (PAD). This test compares the blood pressure measurements in the patient's ankle with those in the arm. A lower ankle pressure relative to the arm pressure suggests the presence of PAD, indicating that there may be blockages or narrowing of arteries in the legs due to atherosclerosis or other vascular conditions.

The ABI is a straightforward, quick, and effective method for diagnosing PAD. It does not require any complex preparation from patients and can often be done in an outpatient setting. Moreover, it provides immediate results, allowing healthcare providers to make timely decisions regarding further evaluation or treatment.

In contrast, other non-invasive test options like the exercise stress test are generally used later in the evaluation process or for assessing functional capacity rather than for initial diagnosis of PAD. While ultrasound can be valuable in visualizing arterial anatomy and flow, it is not the first step in routine PAD assessment. An electrocardiogram (ECG) is primarily used for cardiac assessments rather than for diagnosing vascular diseases such as PAD. Thus, the ABI is the most appropriate and commonly used initial screening tool for this condition.