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Respiratory physiology during pregnancy
Respiratory alkalosis with metabolic compensation Respiratory changes: Progesterone → maternal tidal volume increases by 50% → increased minute ventilation → PaCO2 ranging from 27 to 32 mmHg at full-term Renal compensation: renal excretion of bicarbonate → net pH approximately 7.44-7.46 High TV → high oxygenation → normal-high PaO2 ...
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