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  • Title: Pituitary-thyroid axis reaction after myocardial infarction.
    Author: Vanhaelst L, Degaute JP, Golstein J, Bastenie PA.
    Journal: Horm Metab Res; 1976 Jan; 8(1):42-6. PubMed ID: 1248789.
    Abstract:
    Within the first 36 hours following myocardial infarction, serum total thyroxine (T4) levels were supranormal in most cases in contrast to normal thyrotropin values. After one week, T4 levels dropped to normal while TSH values rose significantly. These findings suggest that, in the acute phase of myocardial infarction, the secretion of thyroid hormones is increased, thereby inhibiting the pituitary thyrotropes. The stimulation of thyroid secretion might be due to the high levels of blood catecholamines generally found in patients with myocardial infarction.
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