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. 2008 Feb;16(2):57-9.
doi: 10.1007/BF03086119.

Hypothyroidism as the cause of atrioventricular block in an elderly patient

N Schoenmakers  1 , W E de Graaff, R H J Peters
Affiliations

Hypothyroidism as the cause of atrioventricular block in an elderly patient

N Schoenmakers et al. Neth Heart J. 2008 Feb.

Abstract

Syncope is a common problem in the older patient. Sometimes syncope is caused by extreme bradycardia secondary to atrioventricular (AV) block. We describe a case in which a 90-year-old woman presented with complete AV block due to severe hypothyroidism. After suppletion with levothyroxine, AV conduction was restored. (Neth Heart J 2008;16:57-9.).

Keywords: atrioventricular block; hypothyroidism.

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Figures

Figure 1
Figure 1
ECG from our patient on the day of arrival, showing a third degree atrioventricular conduction block.
Figure 2
Figure 2
The ECG from our patient six weeks after starting treatment with levothyroxine. The AV block had completely disappeared. We see a sinus rhythm of 88 beats/min and a right bundle branch block.
See this image and copyright information in PMC

References

    1. Braunwald E, editor. Heart disease: a textbook of cardiovascular medicine. Philadelphia: Saunders, 2001.
    1. Laurberg P, Andersen S, Bulow Pedersen I, Carle A. Hypothyroidism in the elderly: pathophysiology, diagnosis and treatment. Drugs Aging 2005;22:23-8. - PubMed
    1. Levy EG. Thyroid disease in elderly. Med Clin North Am 1991;75: 151-67. - PubMed
    1. Singh JB, Starobin OE, Guerrant RL, Manders EK. Reversible atrioventricular block in myxedema. Chest 1973;63:582-5. - PubMed
    1. Schantz ET, Dubbs AW, Allentown MD. Complete auriculoventricular block in myxedema with reversion to normal sinus rhythm on thyroid therarapy. Am Heart J 1951;41:613-9. - PubMed

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