Supra-His complete atrioventricular block in a patient with subclinical hyperthyroidism Subklinik hipertiroidili bir olguda supra-His düzeyde atriyoventriküler tam blok
Turk Kardiyoloji Dernegi Arsivi, cilt.39, sa.8, ss.693-696, 2011 (Scopus, TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 39 Sayı: 8
- Basım Tarihi: 2011
- Doi Numarası: 10.5543/tkda.2011.01574
- Dergi Adı: Turk Kardiyoloji Dernegi Arsivi
- Derginin Tarandığı İndeksler: Scopus, TR DİZİN (ULAKBİM)
- Sayfa Sayıları: ss.693-696
- Anahtar Kelimeler: Atrioventricular block/etiology, electrocardiography, hyperthyroidism/complications
- Sağlık Bilimleri Üniversitesi Adresli: Hayır
Özet
Subclinical hyperthyroidism is a difficult entity to diagnose because of silent clinical features and it may be easily underdiagnosed unless it is suspected and thyroid hormone levels are examined. Although atrioventricular (AV) conduction abnormalities such as complete heart block may occasionally be seen in hyperthyroidism, its association with subclinical hyperthyroidism has not been reported previously. We report on a 50-year-old female patient who did not have any systemic or cardiovascular disease or history of drug use that could affect AV conduction and presented with presyncope and complete heart block with narrow QRS complexes. Thyroid function tests showed subclinical hyperthyroidism and an electrophysiological study showed the supra-His level as the site of complete AV block. After initiation of antithyroid treatment (propylthiouracil), the patient's rhythm improved to second-degree AV block on the third day and returned to normal sinus rhythm on the fourth day. © 2011 Türk Kardiyoloji Derneǧi.