Pulm Function Tests Flashcards
This condition makes the lungs scarred and smaller; containing too little air and are poor at transferring oxygen into the blood.
Restrictive lung disease
This is the measurement of lung volume.
FVC - forced vital capacity
Normal spirometry values are based off what factors?
Age (not under 6) Height Ethnicity Sex
What are provocative tests useful for?
Documenting specific or nonspecific reactivity
Reduced FVC processes are generally termed as what?
Restrictive
To test reversibility of obstruction, what indicates if the airway disease is reversible?
After given a bronchodilator, the FEV1 goes up greater than 12% (asthma)
What test provides the most accurate measurement of oxygenation, the only accurate way to determine PCO2, and the assessment of acid-base status?
Arterial blood gases
What are examples of obstructive lung disease?
Emphysema, asthma, chronic bronchitis, infections
To test reversibility of obstruction, what indicates that the disease in nonreversible?
After given a bronchodilator, the FEV1 does not go up greater than 12% (COPD)
Amount of air you can slowly exhale after you inhale as deeply as possible
Slow vital capacity (SVC)
Difference between the amount of air in your lungs after a normal exhale (FRC) and the amount after you exhale with force (RV)
Expiratory reserve volume (ERV)
Spirometry values are considered abnormal if less than what percent the predicted value?
80% (4L FEV1/5L FVC)
Amount of air in your lungs at the end of a normal exhaled breath
Functional residual capacity (FRC)
How is the FEV1/FVC ratio affected in restrictive disease?
The ratio will be normal or even elevated, because both FEV1 and FVC are reduced
Amount of air you can exhale with force after you inhale as deeply as possible
Forced vital capacity (FVC)
What is the most used spirometry test?
FEV1
How quickly you can exhale
Peak expiratory flow (PEF)
Flow halfway through an exhale
Forced expiratory flow 25% to 75%
Amount of air you can exhale with force in one breath
Forced expiratory volume (FEV)
What are examples of restrictive lung disease?
Extreme overweight, fibrosis, lung cancer, sarcoidosis, scleroderma
This condition makes the lungs contain too much air and take longer to empty; narrowed airways.
Obstructive lung disease
Greatest amount of air you can breath in and out during one minute
Maximum voluntary ventilation (MVV)
Amount of air in your lungs after you have exhaled completely
Residual Volume (RV)
What is an exercise test useful for?
Determining the reason for exercise limitation or shortness of breath
A patient with this condition struggles to get air out of the lungs.
Obstructive disease
A flattening of inspiration (spirometry) indicates what type of defect?
Extrathoracic (vocal cord dyskinesia, trachomalacia)
Amount of air in your lungs after you inhale as deeply as possible
Total lung capacity (TLC)
What type of testing involves the inhalation of a substance that will cause a bronchospastic reaction?
Provocative tests
What are intrinsic causes of restrictive disease?
Pulmonary fibrosis sarcoidosis collagen vascular disease amyloidosis
What are extrinsic causes of restrictive disease?
obesity scoliosis neuromuscular disease
A flattening of expiration (spirometry) indicates what type of defect?
Intrathoracic (Tumor, tracheal stenosis)
What does FEV1 test?
The amount of air exhaled with force in one second.
This condition is an increased resistance to airflow
Obstructive disease
