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CLINICAL STUDY

Acute Renal Failure and Hypercalcemia

, M.D., , , M.D., , M.D., , M.D. & , M.D.
Pages 153-159 | Published online: 07 Jul 2009
 

Abstract

Hypercalcemia can result from excessive bone resorption, renal calcium retention, excessive intestinal calcium absorption, or a combination of these conditions. Hypercalcemia may also provoke acute renal failure (ARF) or hypertension, or aggravate the tubular necrosis that is frequently found in cases of ARF. The association of ARF and hypercalcemia was studied retrospectively in eight patients based in the data in their charts. Data are expressed as median and percentile (25th; 75th). Our results show that ARF associated with hypercalcemia was related with comorbidity in all cases (cancer, multiple myeloma, hyperparathyroidism, sarcoidosis, vitamin D intoxication, and leprosy). Maximum median serum creatinine levels were 3.3 mg/dL (2.7, 3.8 mg/dL) before treatment and 1.1 mg/dL (0.9, 1.3 mg/dL) after treatment. Maximum total median serum calcium was 15.9 mg/dL (13.5, 19.8 mg/dL) before treatment and 9.1 mg/dL (8.4, 9.7 mg/dL) after treatment. Maximum median ionized serum calcium was 2.1 mmol/L (1.8, 2.2 mmol/L) before treatment and 1.1 mmol/L (1.0, 1.2 mmol/L) after treatment. Different kinds of treatment induced a rapid fall in serum calcium concentration. All patients were treated with hydration and diuretics, and three patients also received calcitonin. Serum creatinine concentration always fell simultaneously with the decrease in serum calcium in all cases. All patients progressed with nonoliguric renal failure. In conclusion, in ARF, patients are frequently hypocalcemic. Usually, the presence of hypercalcemia associated with ARF is indicative of the presence of comorbidity, as observed in all eight patients studied here. There was an improvement of renal function in all cases as serum calcium levels decreased.

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