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Surgical and Metabolic Causes of Hypocalcemia

Steven D. Schaefer, MD; Willard E. Fee, Jr, MD

Arch Otolaryngol. 1978;104(5):263-266.

Abstract
• Patients undergoing radical surgical treatment of head and neck neoplasms often are seen with a history of cirrhotic liver disease, electrolyte abnormalities, and other stigma of chronic disease. Despite skillful thyroid surgical technique performed as an isolated procedure or in combination with other procedures such as laryngectomy, hypocalcemia can occur. Common causes of lowered serum calcium levels secondary to removal of parathyroid glands, blood transfusions, hypoalbuminemia, gastrointestinal malabsorption, and renal insufficiency are well known.

Less well known is the recently elucidated role of dependence of calcium metabolism on magnesium. Recently, it has been well documented that alcoholism directly lowers serum magnesium levels in both human and animal models without prior liver disease or malabsorption. The fact that three mechanisms are needed to explain calcium homeostasis implies that the magnesium-calcium interdependence is not clearly understood.

(Arch Otolaryngol 104:263-266, 1978)

Author Affiliations
From the Division of Otolaryngology, Stanford (Calif) University Medical Center. Dr Schaefer is now with the University of Texas Health Science Center at Dallas.

Footnotes
Accepted for publication Oct 26, 1977.

Presented at the American Society of Head and Neck Surgery Meeting, Boston, May 12, 1977.

Reprint requests to Division of Otolaryngology, Stanford University Medical Center, Stanford, CA 94305 (Dr Fee).

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