North Carolina CNA Written Practice Exam

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What key factor must be assessed when taking blood pressure?

The patient's arm should be at heart level

The assessment of blood pressure is significantly influenced by the position of the patient's arm. When the arm is at heart level, it ensures that the measurement is accurate by accounting for hydrostatic pressure differences that can occur when the arm is either raised or lowered. If the arm is above heart level, the reading can be falsely low, and if it is below heart level, it can be falsely high. Therefore, positioning the patient's arm at heart level is crucial for obtaining a reliable blood pressure reading, which is essential for effective monitoring and assessment of the patient's cardiovascular health.

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The room temperature should be regulated

The patient should be sitting upright

The patient should have not eaten for 12 hours

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