23. A 47-year-old male is evaluated in the Emergency Department after ingesting an unknown substance in a suicidal attempt. Lab work reveals the following: serum sodium 140 mEq/L, potassium 3.6 mEq/L, chloride 100 mEq/L, and tCO2 15 mEq/L. Arterial blood gas shows pH of 7.40 and PCO2 25 mmHg. Which of the following best describes his acid-base disturbance(s)? High anion gap metabolic acidosis with physiologic respiratory compensation Chronic respiratory alkalosis High anion gap metabolic acidosis + respiratory alkalosis Acute respiratory alkalosis
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The serum sodium level is within the normal range (135-145 mEq/L), the potassium level is slightly low (3.5-5.0 mEq/L), the chloride level is within the normal range (98-106 mEq/L), and the tCO2 (total carbon dioxide) level is low (22-28 mEq/L). Show more…
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