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Arterial Blood Gases - Surgery

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Metabolic Acidosis<br />

Uncompensated: ↓ pH, ↓ HCO -<br />

3 , nl PaCO Pa<br />

Compensated: nl pH, ↓ HCO -<br />

3 , ↓ Pa<br />

PaCO<br />

CO 2<br />

CO 2<br />

Causes: hypoxia (lactic acidosis), diabetes<br />

(ketoacidosis), renal failure (uremic acidosis),<br />

GI loss of HCO -<br />

3 (diarrhea), renal loss of<br />

HCO -<br />

3 (renal tubular acidosis, diamox),<br />

poisons (aspirin, methanol, ethylene glycol)<br />

Treatment: treat cause, buffer

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