Bioelectrical heart function in women with euthyroid nodules

Abstract

Bioelectrical heart function (BEHF) was assessed in 224 women with various morphological variants of euthyroid nodules (ETN). In control group (n=42), BEHF was studied by standard ECG analysis. In all ETN variants, heart rate and ECG wave amplitude were significantly reduced, and ECG wave and interval duration were significantly increased. In 92. 9 % of the cases, cardiac arrhythmias, blockades, repolarization disturbances were observed; combined disturbance rate was as high as 40, 5 %. BEHF disturbances might be explained by mild peripheral hypothyrosis, as TTG level in ETN (3. 1 mkIE/1) was close to upper norm limit.