Describe how a fixed airway obstruction would change the FEF/FIF 50%?
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equally reduced flows on the FEF/FIF 50%
Define Inspiratory Capacity
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amount of gas that can be inspired after a normal expiration
Formulas for Inspiratory Capacity?
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IRV+ VT
TLC-ERV
Typical value for Forced Expiratory Flow 200-1200
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6L/sec
5 volumes and/or capacities that spirometry can measure
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Vt, IRV, ERV VC
Different Formulas for Expiratory Reserve Volume?
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VC-IC
FRC-RV
inspriatory reserve volume
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maximum volume that can be inhaled after a normal inhalation
Time to hold LABA prior to spirometry testing?
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8 hrs
FEF 25-75% (Forced Expiratory Flow)
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-average flow that occurs during middle 50 of FVC measurement
-this measurement reflects the condition of the MEDIUM to SMALL airways
-decreases w/ age and obstructive lung disease
Significant of FEF 25-75
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Measure flow within the small airways decrease obstructive
MOST SENSITIVE to detect the presence of Early small airway disease
< 30% of patient predicted spirometry predited values is condsidered?
Give this one a try later!
equally reduced flows on the FEF/FIF 50%
Define Inspiratory Capacity
Give this one a try later!
amount of gas that can be inspired after a normal expiration
Formulas for Inspiratory Capacity?
,Give this one a try later!
IRV+ VT
TLC-ERV
Typical value for Forced Expiratory Flow 200-1200
Give this one a try later!
6L/sec
5 volumes and/or capacities that spirometry can measure
Give this one a try later!
Vt, IRV, ERV VC
Different Formulas for Expiratory Reserve Volume?
Give this one a try later!
VC-IC
FRC-RV
inspriatory reserve volume
, Give this one a try later!
maximum volume that can be inhaled after a normal inhalation
Time to hold LABA prior to spirometry testing?
Give this one a try later!
8 hrs
FEF 25-75% (Forced Expiratory Flow)
Give this one a try later!
-average flow that occurs during middle 50 of FVC measurement
-this measurement reflects the condition of the MEDIUM to SMALL airways
-decreases w/ age and obstructive lung disease
Significant of FEF 25-75
Give this one a try later!
Measure flow within the small airways decrease obstructive
MOST SENSITIVE to detect the presence of Early small airway disease
< 30% of patient predicted spirometry predited values is condsidered?
