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  • Title: Time course of regression of left ventricular hypertrophy after successful parathyroidectomy.
    Author: Stefenelli T, Abela C, Frank H, Koller-Strametz J, Niederle B.
    Journal: Surgery; 1997 Feb; 121(2):157-61. PubMed ID: 9037227.
    Abstract:
    BACKGROUND: We have shown that primary hyperparathyroidism may induce myocardial hypertrophy that is reversible after successful parathyroidectomy. The present study was designed to assess the time course of regression of left ventricular hypertrophy without further effects of drug treatment or disease states. METHODS: We performed echocardiographic studies in 16 patients with primary hyperparathyroidism and normal resting blood pressure, normal systolic left ventricular function, no evidence of valvular disease, and without any current medication before parathyroidectomy, as well as during intermediate and long-term follow-up after successful parathyroidectomy. RESULTS: Eleven patients (69%) had end-diastolic wall thickness of the interventicular septum and/or posterior wall greater than 11 mm on baseline echocardiogram. After surgical removal of the inciting disease and an average of 12.5 and 45.7 months of follow-up with normocalcemia and normal parathyroid hormone levels a prolonged regression of left ventricular hypertrophy was observed (interventricular septum, -0.68 mm at 12.5 months and -1.69 mm at 45.7 months; p = 0.02; posterior wall, -0.46 mm at 12.5 months and -2.24 mm at 45.7 months; p = 0.02). CONCLUSIONS: We conclude that the removal of the cause of myocardial hypertrophy by successful parathyroidectomy leads to a prolonged reversal of hypertrophy. The progressive reduction of left ventricular wall thickness is not completed within 12 months.
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