Lt 2 - lung vol and capacity Flashcards
1
Q
what is spirometry
A
measure airflow and changes in lung vol using spirometer
-flow = change in vol/change in time
2
Q
what does penumotachometers measure
A
changes in pressure and changes in the vol directly
3
Q
what is inspiratory reserve vol IRV
A
max vol that can be inspired above tidal vol
4
Q
what is tidal vol (Vt)
A
-volume during normal breathing
5
Q
what is expiratory reserve vol ERV
A
max vol that can be expired below tidal vol
6
Q
what is residual vol
A
vol of air remaining in the lungs afetr expiration
7
Q
what is inspiratory capacity
A
IRV + Vt
8
Q
what is expiratory capacity
A
Vt +ERV
9
Q
what is FRC
A
ERV+RV
- vol after normal expiration
- represents EQB position for RS
10
Q
what is vital capacity
A
IRV+ERV+VT
11
Q
what is total lung capacity
A
IRV+ERV+VT+RV
