Partial Recovery of Renal Function in Black Patients with Apparent End-Stage Renal Failure due to Primary Malignant Hypertension

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Abstract
We report the largest series in which 12 out of 54 patients with primary malignant hypertension requiring dialysis recovered sufficient renal function to allow withdrawal of dialysis. The patients were divided into recovery (RC; n = 12) and non-recovery (N-RC; n = 42) groups. The two groups were compared for variables which might predict RC. They were also assessed for survival. Nine of the RC and 6 of the N-RC patients presented with acute oliguria (p = 0.01). The initial mean arterial pressure was significantly higher in the RC than the N-RC group (178 ± 17 vs. 160 ± 27 mm Hg; p = 0.03). Although not statistically significant, more females recovered (8 of 12 vs. 16 of 42; p 2 = 4.48; p = 0.03). The renal function RC may be related to the type of dialysis provided (intermittent peritoneal dialysis) and to the use of modern potent peripheral vasodilator antihypertensive agents. Potential renal function RC should always be considered in patients being dialyzed for primary malignant hypertension.

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