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Ranitidine-associated interstitial nephritis and Fanconi syndrome
K Neelakantappa1, G R Gallo, J Lowenstein
1Department of Medicine, New York University Medical Center, NY 10016.
Summary
Ranitidine use can cause acute renal failure and Fanconi syndrome, characterized by kidney tubule damage. Prompt diagnosis and prednisone treatment led to the resolution of these adverse effects in a patient.
Area of Science:
- Nephrology
- Pharmacology
Background:
- Ranitidine, an H2 blocker, is commonly prescribed for peptic ulcer disease.
- Acute interstitial nephritis is a known complication of H2 blockers, though rarely reported with ranitidine.
Observation:
- A patient developed acute renal failure and Fanconi syndrome while taking ranitidine.
- Renal biopsy confirmed acute interstitial nephritis.
Findings:
- The patient exhibited renal tubular acidosis, aminoaciduria, glycosuria, uricosuria, and phosphaturia.
- Reduced urea generation was noted, linked to significant urinary nitrogen loss via aminoaciduria.
Implications:
- This case highlights a rare but serious adverse effect of ranitidine.
- Early recognition and corticosteroid therapy may reverse ranitidine-induced nephrotoxicity and Fanconi syndrome.