Bicarbonate level greater than 26 mEq/L indicates which disturbance?

Bicarbonate level greater than 26 mEq/L indicates which disturbance?

• A. Metabolic alkalosis
• B. Metabolic acidosis
• C. Respiratory alkalosis
• D. Respiratory acidosis

Answer: (D)

Elevated bicarbonate signals a metabolic alkalosis. Bicarbonate is the main base in the blood, and the kidneys regulate it along with hydrogen ions. When you see HCO3- above about 26 mEq/L, it means there is a net gain of base or a loss of hydrogen ions, causing the body to be more alkaline. That pattern fits a metabolic alkalosis, which can occur with things like vomiting or diuretic use that remove hydrogen ions or add base. Metabolic acidosis would show a low bicarbonate. Respiratory disturbances affect CO2 and can lead to compensatory changes in bicarbonate, but those are secondary adjustments; the primary disturbance indicated by a high bicarbonate is metabolic alkalosis.

Elevated bicarbonate signals a metabolic alkalosis. Bicarbonate is the main base in the blood, and the kidneys regulate it along with hydrogen ions. When you see HCO3- above about 26 mEq/L, it means there is a net gain of base or a loss of hydrogen ions, causing the body to be more alkaline. That pattern fits a metabolic alkalosis, which can occur with things like vomiting or diuretic use that remove hydrogen ions or add base.

Metabolic acidosis would show a low bicarbonate. Respiratory disturbances affect CO2 and can lead to compensatory changes in bicarbonate, but those are secondary adjustments; the primary disturbance indicated by a high bicarbonate is metabolic alkalosis.