Metabolic acidosis in chronic kidney disease — ABIM Board MCQ
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Correct answer: E — Start oral sodium bicarbonate with volume-status monitoring
The best answer is “Start oral sodium bicarbonate with volume-status monitoring”. Persistent metabolic acidosis in CKD contributes to muscle catabolism and may accelerate progression. Oral alkali is appropriate with surveillance for sodium-related hypertension or volume overload. Acetazolamide worsens bicarbonate loss, fludrocortisone promotes sodium retention, severe protein restriction is harmful, and arterial pH is not required to recognize repeated low bicarbonate.
Reference: KDIGO 2024 CKD Guideline: https://kdigo.org/wp-content/uploads/2024/03/KDIGO-2024-CKD-Guideline.pdf