Pulm Physiology 2 Flashcards
1
Q
What is:
- Tidal Volume
- Inspiratory Reserve Volume
- Expiratory Reserve Volume
- Residual Volume
A
- Tidal: under resting conditions regular breathing in and out. (the amount of air inhaled and exhaled)
- Inspiratory: inspiration above normal tidal volume (amount of air forcefully inhaled after normal tidal volume inhalation)
- Expiratory: exhalation beyond normal tidal volume (amount of air forcefully exhaled after normal tidal volume exhalation)
- Residual: whats left over after we blow everything out (amount of air remaining in the lungs after a forced exhalation)
2
Q
What is:
- Inspiratory Capacity
- Functional Residual Capacity
- Vital Capacity
- Total Lung Capacity
A
Inspiratory:
-Tidal volume + Inspiratory Reserve Volume
Functional:
-Expiratory Reserve volume + residual volume
Vital:
-TV + IRV + ERV
Total:
-sum of allllllll the lung volumes
TV+IRV+ERV+RV
3
Q
What is obtained from Spirometry?
A
- Forced Vital Capacity(FVC): gas forcibly expelled after taking a deep breath
- Forced Expiratory Volume (FEV): the amount of gas expelled during specific time intervals of the FVC
- Peak expiratory flow rate (how fast they blow out)
- flow volume loop
4
Q
What happens to TLC, FRC, VC, and RV in restrictive/obstructive disease?
A
Obstructive:
- TLC relatively normal, maybe increased
- FRC increased
- RV increased
Restrictive:
- TLC decreased
- FRC decreased
- VC decreased
- RV decreased
5
Q
Alveolar ventilation rate means what? what is the calculation?
A
- flow of gases into and out of the alveoli during a particular time
- AVR=frequency (breaths/min) X (TV-Dead Space)
