The ECG that Came in from the Cold

Resolution of Complete Atrioventricular Block in a Patient with Severe Hypothyroidism

“…However extensive myocardial fibrotic changes can lead to irreversible conduction delay. Affected patients fail to improve despite proper thyroid hormone treatment [2]. About 4.6 percent of the U.S. population age 12 and older has hypothyroidism [11].…”

“…Hormonal etiology, specifically hypothyroidism, is associated with cardiac arrhythmias [1]. Sinus bradycardia, low voltage, nonspecific T-wave changes and dissociative atrioventricular (AV) abnormalities are some of descriptive electrocardiographic features [2]. In the majority of well know clinical presentations complete AV block requires the insertion of a permanent pacemaker.…”