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Oved Soffer, MD; Susan K. Fellner, MD; Robert L. Rush, PhD

Arch Intern Med. 1981;141(2):181-183.

Abstract
• Of 90 patients undergoing regular dialysis, 42% had elevated levels of creatine phosphokinase (CPK). The BB isoenzyme was not detected, and only one patient had CPK MB. The elevation of CPK MM level did not correlate with values for calcium, phosphorus, calcium times phosphorus product, dry weight, or parathyroid hormone. Elevated levels of the enzyme correlated directly with muscle weakness in male patients and with hypothyroidism (depressed free thyroxin index) and inversely with treatment with vitamin D₃ supplements. We conclude that high CPK levels in uremia are secondary to skeletal muscle abnormalities and that hypothyroidism and vitamin D₃ deficiency may contribute to so-called uremic myopathy.

(Arch Intern Med 141:181-183, 1981)

Author Affiliations
From the Department of Medicine, Division of Nephrology, Emory University School of Medicine, Atlanta (Drs Soffer and Fellner), and Pathologist's Professional Service Association, Inc, Tucker, Ga (Dr Rush).

Footnotes
Accepted for publication May 29, 1980.

Reprints not available.

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