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Hyperthyroidism and complete atrioventricular block--a report of 2 cases with electrophysiologic assessment

Serkan Topaloglu1, Oya Yanik Topaloglu, Ozcan Ozdemir

  • 1Turkiye Yüksek Ihtisas Hospital, Cardiology Clinics, Ankara, Turkey. s.topaloglu@ttnet.net.tr

Angiology
|March 29, 2005
PubMed

Insights

Cardiovascular issues are common in thyroid disorders, but atrioventricular (AV) block is rare in hyperthyroidism. This study presents two cases of complete AV block in patients with thyroid dysfunction, exploring potential mechanisms.

Area of Science:

  • Cardiology
  • Endocrinology
  • Electrophysiology

Background:

  • Cardiovascular manifestations are frequent in thyroid disorders.
  • Atrioventricular (AV) conduction disorders are considered rare complications, particularly in hyperthyroidism.

Observation:

  • The authors present two cases of thyroid dysfunction associated with complete AV block.
  • Electrophysiologic characteristics of these patients were analyzed.

Findings:

  • The exact mechanism linking hyperthyroidism and AV block remains elusive.
  • Review and speculation on similar reported cases are provided.

Implications:

  • Understanding the link between thyroid disorders and AV block can improve clinical diagnosis.
  • Further research into the electrophysiologic mechanisms is warranted.

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