What is the first step in measuring heart rate at the radial artery?

To measure heart rate at the radial artery effectively, the initial step involves locating the artery properly. Closing your fist helps to tense the muscles in the forearm, which can make the radial artery more prominent and easier to access. This anatomical adjustment enhances the ability to feel the pulse accurately. Once the artery is identified, a gentle pressure can be applied to obtain a reliable pulse count.

The other options do not align with the best practices for accurately assessing heart rate. Pressing down hard could impede blood flow and create discomfort, while counting to ten without moving assumes the pulse is already felt and does not address the initial step of locating the artery. Estimating the pulse rate visually lacks accuracy, as it relies on subjective interpretation rather than direct tactile assessment.