A patient with salicylic acid poisoning has the following blood gas analysis report, pH = 7.12, PCO2 = 18 mm/hg, HCO-2 = 12 mmol/L. The resulting acid base abnormality can be best explained:
|A||Metabolic acidosis with respiratory alkalosis|
|B||Metabolic acidosis with respiratory acidosis|
|C||Respiratory acidosis with metabolic alkalosis|
Metabolic acidosis with respiratory alkalosis
In salicylic acid poisoning there occurs metabolic acidosis as evidenced by pH of 7.12. To compensate: .
Kidneys looses bicarbonate, so bicarbonate is low (12 mmol/L).
The patient hyperventilates (pC0218 mmHg) causing respiratory alkalosis.