Final answer:
During a pre-treatment evaluation of an internal vascular access, it is important to palpate for a pulse. This involves manually feeling for the pulsation of an artery, commonly using the radial artery in the wrist or the common carotid artery in the neck.
Step-by-step explanation:
When conducting a pre-treatment evaluation of an internal vascular access, one important step is palpating for a pulse. This involves manually feeling for the pulsation of an artery that runs close to the body surface. Common sites to find a pulse include the radial artery in the wrist, the common carotid artery in the neck, and various other arteries throughout the body, such as the femoral artery in the thigh and the popliteal artery behind the knees.