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PubMed · 4062469

Cyclic sinus node dysfunction in a patient with hyperthyroidism.

S Nakagawa·A Higa·H Kondoh·Y Koiwaya·K Tanaka
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Abstract

In a 54-year-old woman with hyperthyroidism, episodic sinus node dysfunction (SND) recurred in a cyclic fashion. The SND occurred suddenly during normal sinus rhythm and progressed to marked sinus bradycardia; occasionally, sinus arrest developed with or without ventricular escape beats. A 1-mg dose of intravenous atropine sulfate suppressed the occurrence transiently. After a 200-mg dose of propylthiouracil and a 20-mg dose of prednisolone every six hours, the SND was completely abolished within 21 hours. It is probable that, together with a pathologic process induced by hyperthyroidism, the autonomic nervous system participated in our patient's episodic SND.

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Arrhythmias, CardiacBradycardiaElectrocardiographyElectrophysiologyFemaleHumansHyperthyroidismMiddle AgedSinoatrial NodeCase ReportsJournal Article

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S Nakagawa, A Higa, H Kondoh, Y Koiwaya, K Tanaka. 1985. Cyclic sinus node dysfunction in a patient with hyperthyroidism.. https://pubmed.ncbi.nlm.nih.gov/4062469/

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