The Effect of Antithyroid Treatment on Atrial Conduction Times in Patients with Subclinical Hyperthyroidism

Abstract

SH is associated with prolonged atrial conduction time. After achievement of euthyroid state, decrement in atrial conduction time may reveal how the antithyroid treatment may prevent the development of atrial fibrillation in these patients.

History of hyperthyroidism and long-term outcome of catheter ablation of drug-refractory atrial fibrillation

“…[31][32][33] However, we did not find any differences in terms of LA size and LA voltage between patients with history of hyperthyroidism and those without. Nevertheless, we demonstrated that the mean RA voltage was significantly lower in patients with history of hyperthyroidism.…”

Is Atrial Electromechanical Coupling Delayed in Patients with Secundum Atrial Septal Defect?

“…Abnormal rhythms, particularly atrial fibrillation but also flutter and paroxysmal tachycardia, occur commonly in patients with ASD. 11,16,17 In our study, we found that both intra-atrial and inter-AEMCT were not prolonged in patients with ASD than control subjects. 3 In various reports, arrhythmias have been noted in about 15-50% of patients beyond the age of 20 years; the incidence increases with advancing age.…”

Evaluation of Atrial Electromechanical Delay and Diastolic Functions in Patients with Hyperthyroidism

“…There are scarce data about the effects of hyperthyroidism on atrial electromechanical duration in the literature. Nacar et al . reported that subclinical hyperthyroidism was associated with prolonged atrial conduction time that might be improved by achievement of euthyroid state.…”