Heart Rate Recovery and Chronotropic Incompetence in Patients with Subclinical Hypothyroidism

Akcakoyun M., Emiroglu Y., Pala S., Kargin R., Guler G. B., Esen O., ...More

PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, vol.33, no.1, pp.2-5, 2010 (SCI-Expanded) identifier identifier identifier


Methods: Twenty-five patients (11 men, 14 women with a mean age of 36 +/- 10 years) who were diagnosed SCH determined by an increased serum thyrothrophine (TSH) concentration (> 4.0 ng/mL) and the normal free triiodothyronine (fT3) and free thyroxin (fT4) levels, were included in the study. The control group of healthy individuals with normal TSH (12 males, 15 females) with a mean age of 36 +/- 3 years was also included. Two groups were well matched for age, sex, and body mass index. Medical history, physical examination, electrocardiogram, treadmill exercise testing, and chest radiogram were performed for all participants.