Abstract
Although cardiovascular manifestations in thyroid disorders are frequently encountered in clinical practice, atrioventricular (AV) conduction disorders, especially in hyperthyroidism, are rare. There are some proposed mechanisms for AV blocks in hyperthyroidism but the exact mechanism is still unknown. The authors report 2 cases with thyroid function disorders and complete AV block, and the electrophysiologic characteristics of these 2 patients, and they review and speculate on similar reported cases.
MeSH terms
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Aged
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Bundle of His / physiopathology
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Coronary Angiography
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Coronary Disease / complications
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Coronary Disease / diagnosis
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Coronary Disease / physiopathology
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Electrocardiography*
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Female
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Goiter, Nodular / complications
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Goiter, Nodular / diagnosis
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Goiter, Nodular / physiopathology
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Heart Block / diagnosis
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Heart Block / etiology*
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Heart Block / physiopathology
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Humans
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Hyperthyroidism / complications*
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Hyperthyroidism / diagnosis
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Hyperthyroidism / physiopathology
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Male
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Middle Aged
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Signal Processing, Computer-Assisted
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Thyroid Hormones / blood