Autonomic Reactivity With Altered Thyroid Status

作者：Anjali Nadir Bhat; Leela Kalsotra; Sabita Yograj

来源：JK Science : Journal of Medical Education %26amp; Research , 2007.

• Autonomic Nervous System
• Sympathetic reactivity
• Parasympathetic reactivity
• Hyperthyroidism

The study was carried out to test the effect of altered thyroid status on the autonomic reactivity in 60subjects (age group 20-50 years). The para meters recorded and the tests used were pulse rate, bloodpressure, orthostasis, cold pressor test, mental arithmetic and QTc interval for assessment of sympatheticactivity and valsalva ratio, heart rate response, expiratory-inspiratory ratio (E.I. ratio), heart rate variability,standing-lying ratio (S.L. ratio) and 30: 15 ratio for assessment of parasympathetic activity. Our findingsshow that the changes in thyroid hormone levels - in both hypothyroids and hyperthyroids are associatedwith altered sympathetic reactivity, with no significant difference in the parasympathetic activity - ineither hypothyroids or hyperthyroids- as compared to euthyroid controls.

• 出版日期2007