Clinical Medical Assistant Exam Practice Question

Correct Answer: D

Rationale: For accurate peak flow readings, a patient must take a deep breath and then blow as hard and as fast as possible into the device. This method ensures that the maximum airflow is measured, reflecting the patient’s lung function effectively.

Option A is incorrect because holding the breath prior to exhaling does not allow for a proper measurement of airflow. Option B is also wrong, as gentle exhalation does not provide the force needed for an accurate reading. Option C misguides the patient by suggesting a slow inhalation, which is not relevant to the peak flow measurement process.