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Arterial Blood Gases - Surgery

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Acid-Base Acid Base Disorders<br />

Compensation<br />

– Change in PaCO PaCO2<br />

to correct pH with<br />

metabolic acid-base acid base imbalance<br />

• e.g., hyperventilation occurs with<br />

metabolic acidosis<br />

– Change in HCO -<br />

3 to correct pH with<br />

respiratory acid-base acid base imbalance<br />

• e.g., HCO -<br />

3 increases with respiratory<br />

acidosis<br />

Compensation<br />

↔<br />

↓<br />

pH ~ HCO 3 -<br />

PCO 2<br />

↓↑<br />

↓↑

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