Abnormal QT Dispersion in Hyperthyroidism
Journal Title: Turkish Journal of Endocrinology and Metabolism - Year 1998, Vol 2, Issue 3
Abstract
Cardiac symptoms have a prominent position in hyperthyroidism. The cardiac and non-cardiac symptoms of hyperthyroidism may in part be related to an Increased sympathoadrenal activity. The thyroid hormones also exert a direct effect on the heart. in this study, we examined the value of OT dispersion as a simple non invasive predictive marker of hyperthyroidism. We examined 20 patients (age: 37±5.4 years, 16 female, 4 male) with hyperthyroidism and 22 age and sex- matched healthy subjects were selected to serve as the control group. Repolarisation dispersion parameters were calculated as the difference between maximal and minimal values of QT, QTc from 12-lead ECG recording at 25 mm/s. Comparisons were made using Student's t- test. QT and QTc dispersions were significantly longer in the patients with hyperthyroidism than in the control group. After treatment, QT and QTc dispersion intervals In the patients' group were not significantly different from these of the control group. in conclusion, striking increases in QT dispersion indicating regional inhomogenity of ventricular repolarization were noted in patients with hyperthyroidism. This new finding may suggest a possible explanation for the presence of ventricular arrhythmias in patients with hyperthyroidism.
Authors and Affiliations
Berrin Çetinarslan, Özhan Güldeli, Dilek Ural, Ayşe Çefle, Ayşen Ağaçdiken, Baki Komşuoğlu
Keywords
Related Articles
- EP ID EP84444
- DOI -
- Views 161
- Downloads 0
Use of Metformin in Pregnancy: A Survey of Turkish Physicians’ Attitudes
Objective: Although metformin crosses the placenta, there is no current evidence whether the use of metformin in pregnancy is associated with increased risk of fetal and maternal complications. The aim of this present st...
Risperidon Tedavisi ile İlişkili Diyabetik Ketoasidoz Vakası
Şizofreni ile diyabet arasındaki ilişki daha önceden bilinmektedir. Buna ilaveten bazı vaka takdimlerinde antipsikotik ajanların diyabet gelişimini veya diyabetin şiddetini arttırabildiği gösterilmiştir. 5 aydır risper...
Correlations of Serum Cu+2, Zn+2, Mg+2 and HbA1c in Type 2 and Type 2 Diabetes Mellitus
Type 2 Diabetes Mellitus (DM) is one of the most frequently seen. Type 2 DM shows identical patophysiological features with Type 1 DM but differs in etiology. There are lots of studies in the area of both types of DM whi...
The Levels of Serum High Sensitivity C-reactive Protein in Subjects with Impaired Fasting Glucose
High-sensitivity C-reactive protein is a well-known risk factor for cardiovascular heart diseases. In this study we aimed to determine the levels of serum high-sensitivity Creactive protein in patients with newly diagnos...
Spontaneous Remission of Acromegaly Due to Apoplexy
Pituitary apoplexy is a rare clinical syndrome characterized by sudden onset of headache and vomiting, accompanied by visual disturbance or ocular motility impairment and pituitary insufficiency. Pituitary apoplexy prese...