• 用簡單量度吹氣速度的方法來對肺功能作初步的評估. (一般較多用於對哮喘病的評估)
• 透過量度計的數字來表達你吹氣的力度.
• A peak flow meter is used to check your asthma, as a thermometer is used to check a temperature. During an asthma episode the airways in the lungs become
  narrow, and the peak flow number may be low, showing that air is not moving easily through the lungs.
• Using a peak flow meter can also help you and your doctor decide if the Asthma Action Plan is
  working well
  - decide when to add or stop medicine
  - decide when to seek emergency care
• Measure your expiratory flow rate. In simple terms this means how hard and quickly you blow air out of your lungs.                         
• The meter has a marker that slides up the scale as you blow out.
• The harder you will be able to blow out and the higher your peak flow score will be.
•  Peak flow readings are measured in litres per minute.
• You will be able to tell what is going on in your airways rather than just guessing by the way you feel.

使用說明 / To take a peak flow reading you should:

• 先將量度計的數字調較至 "零" 度 
• 不論坐或站立, 讓身體調適至最舒服和自然平穩的狀態.
• 把吹管口橫放貼平咀邊
• 先作深深的吸一口氣, 後用力把這口氣經管道吹出 
• 量度計會顯示出你剛吹出的速度
• 把有關的量度數字記下, 交與醫護人員作專業的評估
• Check that the pointer is at point "zero".
• Preferably stand or sit in a comfortable & upright position.
• Holding the peak flow meter level (horizontally) and keep your fingers away from the pointer.
• Take a deep breath and close your lips firmly around the mouthpiece.
• Then blow as hard as you can -  remember it is the speed of your blow that is being measured.
• look at the pointer and check your reading.
• reset the pointer back to zero.
• do this three times and record the highest reading in your daily asthma diary.
• 上述資料只供參考, 詳情請聯絡你的醫生作進一步的查詢 The above information are just be for your reference only, pls consult your doctor for more full details.