Maternal Respiratory Changes Flashcards
1
Q
Oxygen Consumption
A
Increase (50%)
2
Q
Minute Ventilation
A
Increase (50%)
3
Q
Tidal Volume
A
Increase
4
Q
Respiratory Rate
A
Increase
5
Q
P02
A
Increase
6
Q
PCO2
A
Decreases (Although production is increases)
7
Q
HCO3
A
Decrease
8
Q
P50
A
Increased
9
Q
Functional residual capacity
A
Decreased (increased risk of hypoxemia)
10
Q
Displacement of diaphragm ___________ due to expanding uterus
A
4 cm superiorly
11
Q
Alveolar Ventilation
A
increase (70%)
12
Q
Dead space, lung compliance, pH, VC, FEV, FEV1 and diffusion capacity.
A
No changes
13
Q
Extreme hyperventilation by mom causes fetal hypoxia and respiratory acidosis by
A
Vasoconstriction of umbilical BF
Left shift of O2-Hb curve
14
Q
Mild hyperventilation is _____.
A
safe ( watch fetal HR !)
15
Q
Airway changes:
A
Edema, difficult intubation and high risk of bleeding (use smaller et tube 6-7)
