In what order should segmental pressures be taken during an arterial study?

The correct approach for segmental pressure measurements during an arterial study should follow a specific anatomical sequence for reliable assessments. Starting with the brachial pressure allows for the baseline arterial pressure in the arm to be established. Next, measuring the ankle pressure provides insight into the vascular status of the lower extremities, which is crucial for diagnosing conditions such as peripheral artery disease. After obtaining the ankle pressure, segmental pressures in the calf, above the knee, and high thigh regions are measured sequentially, as this stepwise approach helps to identify the locations of arterial obstruction or stenosis.

This order ensures that clinicians can accurately evaluate blood flow dynamics throughout the limb, determining whether pressures decrease at certain levels, which may indicate the presence of vascular compromise. Following the described sequence not only maintains consistency in testing protocols but also aligns with standard practices in vascular diagnostic imaging.