Pulm Flashcards
1
Q
What is the body’s normal range for pH?
A
7.35-7.45
2
Q
At what lung volume is TPR the lowest in the pulmonary circulation? Why?
A
lowest at FRC (after tidal exhale);
- breathing out more decreases the radial stretch of incoming arteries and ↑ intrathoracic pressure
- inhaling more stretches the capillaries around alveoli
3
Q
What is the most important indicator of alveolar ventilation status? What is the nml range?
A
PaCO2: 33-45 mmHg
low = hyperventilation
high = hypoventilation
