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Lab Exercise 6
Question | Answer |
---|---|
Obstructive Pulmonary Diseases | where airflow in and out of lungs is reduced/restricted, like asthma. Diagnosis requires tests for flow rates |
Restrictive Pulmonary Diseases | affect ability to inflate and deflate lungs. Diagnoses require tests for flow volumes and capacities |
Tidal Volume | amount of air inhaled and exhaled with each breath under resting conditions |
Inspiratory Reserve Volume | amount of air forcefully inhaled after a normal tidal breath |
Expiratory Reserve Volume | amount of air forcefully exhaled after a normal tidal breath |
Vital Capacity | maximum exchangeable air in lungs. VC = TV + IRV + ERV |
Minute Respiratory Volume | amount of air in one minute = Tidal Volume x respirations per minute |
Forced Expiratory Volume | a test in which a limit is placed on the length of time Subject has to expel vital capacity air. For OPD |
Percentage of Vital Capacity | FEV1, FEV2, FEV3, amounts that can be forcibly expelled after a maximal inhalation in the period of 1, 2, and 3s . For OPDs |
With obstructive pulmonary diseases, the issue lies within the (airflow / lung volume), while in restrictive pulmonary diseases, the (airflow / lung volume) is affected | airflow, lung volume |
To diagnose obstructive pulmonary diseases, you would most often use (tests of lung volumes / tests of pulmonary flow rates) | tests of flow rates |
What is the difference between lung volume and lung capacity? | capacities are often the sum of two or more volumes, hence they are larger |
T/F: it is NOT possible to have both an obstructive and restrictive pulmonary disease at the same time. | False |
The average inspiratory reserve volume is approximately | 3100mL |
The term used to describe the average amount of air inhaled or exhaled during a resting breath | tidal volume |
If one's inspiratory capacity is 3800mL and inspiratory reserve volume is 3200mL, what would be the tidal volume? | 600mL |
Calculate Vital Capacity | VC = TV + IRV + ERV |
T/F: the inspiratory reserve volume represents the amount of additional air that can be forcefully inhaled after taking a normal breath | True |
Calculate Minute Respiratory Volume | Tidal Volume x respirations per minute |
If an individual has completed the Forced Expiratory Volume test and has a normal FEV1, FEV2, and FEV3, but an abnormally low Vital Capacity, what is the diagnosis? | Restrictive Pulmonary Disease |
If an individual has completed the Forced Expiratory Volume test and has FEV1, FEV2, and FEV3 all below normal, but vital capacity in normal limits, what is the diagnosis? | Obstructive Pulmonary Disease |
FEV | percent of air forced out after 3 seconds |
How are vital capacity and FEV1 affected with asthma? | vital capacity is normal, FEV1 is low |
How are vital capacity and FEV1 affected with fibrosis? | vital capacity is low, FEV1 is normal |