ممرض يعلّم مريضاً قياس ذروة التدفق. أي طريقة صحيحة؟

A nurse teaches peak flow measurement. Which technique is correct?

1. Sit, blow slowly and long, and record the average of three
2. Blow slowly with the tongue inside the mouthpiece
3. Lie down and blow once only, straight after the inhaler
4. Full breath in, sharp hard blow, record the best of three

Answer: D) Full breath in, sharp hard blow, record the best of three. Measure standing or sitting upright: full inhalation, then a short sharp forceful blow, repeated three times, recording the highest. Regular readings establish the personal best.