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J Assoc Physicians India. 2011 Nov;59:735-7.

Hypokalemic periodic paralysis due to proximal renal tubular acidosis in a case with membranoproliferative glomerulonephritis.

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Dept. of Medicine, Medical College, 88, College Street, Kolkata--700073.


Proximal renal tubular acidosis (pRTA) is a rare disorder. Hypokalemia may be associated with it; occasionally leading to features like hypokalemic periodic paralysis. Though pRTA is a tubulointerstitial kidney disease, glomerulonephritis may occasionally lead to pRTA by tubular damage through leaking proteins, cytokines or by inflammatory infiltrates. In our reported case a 27 year old male had recurrent episodes of hypokalemic quadriparesis. Investigations revealed features of pRTA including hypokalemia and non-anion-gap hyperchloremic metabolic acidosis. His urine pH dropped to 5 with NH4Cl loading test. Kidney biopsy showed membranoproliferative glomerulonephritis with tubulointerstitial damage. Hypokalemic periodic paralysis and pRTA are uncommon associations of membranoproliferative glomerulonephritis.

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