Peak Flow is used in hospitals to diagnose some lung diseases. It measures the maximum rate at which air can be breathed out from the lungs.
How will the Peak Flow for a person with emphysema differ from that for a healthy person?
1 )
It falls as carbon monoxide reduces oxygen-carrying capacity of the blood.
It falls as elastic fibres are damaged in the alveoli.
3 )
It remains constant as the damage to the lungs does not affect the lung volume.
4 )
It rises as larger air spaces make it easier for the air to flow.
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