During peak flow testing, when might the test be repeated?

• A. May be performed before and after medication
• B. Only before medication
• C. Performed after eating
• D. Never repeated

Answer: (A)

Measuring peak expiratory flow rate helps gauge how open the airways are and how they respond to bronchodilator therapy. Repeating the test before and after giving medication provides a before-and-after comparison, showing whether the medication improves airflow. This comparison is essential for determining effectiveness and guiding treatment decisions.

Why the other options aren’t appropriate: repeating only before medication wouldn’t show the medication’s effect; testing after eating isn’t a standard, reliable practice for this measurement and can introduce unnecessary variability; never repeating the test would miss important information about response to therapy.