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7 Cards in this Set
- Front
- Back
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How does basal oxygen consumption change in pregnancy?
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Increases during early pregnancy up to 20% by term.
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How does PaCO2 change in pregnancy?
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Decrease to 32 mmHg due to increased alveolar ventilation
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How does PaO2 change in pregnancy?
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Increase to 106 mm Hg due to increased ventilation
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How does pregnancy affect pH and why?
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It remains unchanged despite increased alveolar ventilation (decreased PaCO2) because the plasma buffer base decreases from 47 to 42 mEq/L.
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Is a pregnant woman more likely to be slower or faster to become hypoxic during apnea than a non-pregnant woman? Why?
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Faster due to decreased FRC and increased metabolic rate.
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What hormonal changes may exacerbate pre-existing diabetes mellitus in pregnancy?
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Human placental lactogen and cortisol increasing the tendency towards hyperglycemia and ketosis.
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How might increased glucose levels in the mother result in fetal hypoglycemia after delivery?
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Transplacental transfer of glucose can stimulate fetal secretion of insulin that causes hypoglycemia after delivery
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