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Lung Volumes & Ventilation
Lung Volumes and Capacities
Clinical Relevance
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Created by
Hiri P
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Cards (6)
Tidal volume:
Adequate
tidal volume
necessary to
maintain
oxygenation
and
co2
clearance
Inspiratory reserve volume:
Required during
cough
& undertaking
exercise
Functional residual capacity:
Essential to
maintain
distal lung
patency
on
expiration
Critical value called
“closing volume”
or “closing capacity"
Residual volume:
Can
increase
in lung
disease
due to
“air trapping”
When
increased
may
alter
respiratory mechanics
Functional Residual Capacity:
Can
reduce
in many clinical situations
Vital capacity:
Critical
value (
1
L ) used to identify if patient is able to maintain
spontaneous ventilation