Spirometry | Notion

Wear nose clip

Maneuver to measure FEV1/FVC:
- Deep inspiration → Forced / rapid expiration from TLC → RV (start of the curve)

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Curve generated with Forced / rapid expiration → With this maneuver, VC is termed ‘FVC’

Volume Time curve: Start at time 0 → without any expiration

Volume Time curve: Start at time 0 → without any expiration

Flow Volume Curve: Start with Expiration (flow is measured by the graph below). Pre/Post = bronchodilator; X = volume of air expired

Flow Volume Curve: Start with Expiration (flow is measured by the graph below). Pre/Post = bronchodilator; X = volume of air expired

Note: FRC/RC (on the right of the curve) cannot be measured with this, you would need a Body Plethysmography
In FV cure: Right in x = less air in the lung
In VT curve: Up in y = less air in the lung