Hypomagnesemia Following the Diuresis of Post-Renal Obstruction and Renal Transplant

Abstract
Three unusual cases are described which demonstrated hypomagnesemia and symptoms resembling magnesium deficiency syndrome. The hypomagnesemia was most likely secondary to urinary losses from diuresis following release of post-renal obstruction and renal homotransplantation. Heretofore, this association has not been described. Case I was unique because of the post-obstructive diuresis in the face of marked renal impairment. Case 2 is noteworthy because of the profound hypomagnesemia, 0.4 mEq/l, and because of the development of congestive heart failure. The rapid improvement noted in cardiac function with magnesium replacement suggests a relationship to magnesium deficiency.

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