PFT
Volume of air inhaled after normal inspiration
IRV
Lung condition causing FVC to be lower than VC due to increased RAW
Obstruction
Amount of time associated with apnea to diagnose sleep apnea
10 seconds
Measurement calculated by how much N2 a patient exhales over a set period
FRC
Identify condition associated with predicted values: FVC 55%, FEV1 53%, FEV1/FVC 58%, TLC 112%, RV 107%
Moderate Obstructive
Volume of air exhaled from normal exhalation
ERV
4 values calculated from FVC maneuver
FEV1/FVC, FEF (200-1200), FEF 25-75%, PEFR
Conditions associated with sleep apnea (2)
CHF, Central Nervous System Issues
DLCO reliability is based on repeatability. How much time should be allowed between test
4 minutes
Evaluate the results: FVC 72%, FEV1 71%, FEV1/FVC 82%
Mild restrictive
Volume of air you can exhale after max inspiration
VC
Max flowrate generated during FVC, providing good assessment of large AW
PEFR
Breathing effort with minimal airflow w/ or w/o desaturation
hypopnea
Decreased DLCO is hallmark for what lung condition
emphysema
Interpret the following: FVC 81%, FEV1 80%, FEV1/FVC 74%
Normal
Amount of air inhaled after normal exhalation
IC
Effort dependent test breathing deep & fast for 12 seconds
MVV
Hypopnea criteria
30% airflow decrease & 4% desaturation
Factors that increase DLCO (3)
Polycythemia, Exercise, CHF
Interpret the following: pH 7.37, PaCO2 66, PaO2 62, HCO3 33
Fully compensated respiratory acidosis with mild hypoxemia
Volume of air left in the lungs after normal exhalation
FRC
What is an acceptable range for a PFT 3L calibration syringe
Respiratory pattern with crescendo-decrescendo pattern of hypopnea w/ alternative periods of apnea
Cheyne-Stokes
Most precise methos to measure lung volumes
Body Plethysmography Method
What do you recommend for a patient with: pH 7.37, PaCO2 66, PaO2 62, HCO3 33 on 2LPM N/C
Nothing