35岁及以下患者与65岁以上患者在倾斜试验诱发血管迷走性晕厥期间儿茶酚胺反应的比较。
Comparison of catecholamine response during tilt-table-induced vasovagal syncope in patients <35 to those >65 years of age.
作者信息
Ermis Cengiz, Samniah Nemer, Sakaguchi Scott, Lurie Keith G, Pham Scott, Lu Fei, Benditt David G
机构信息
Cardiac Arrhythmia Center, Department of Medicine, Cardiovascular Division, University of Minnesota Medical School, Minneapolis, Minnesota 55455, USA
出版信息
Am J Cardiol. 2004 Jan 15;93(2):225-7. doi: 10.1016/j.amjcard.2003.09.047.
This study compared alterations in arterial catecholamine concentrations associated with tilt-induced vasovagal syncope that differed in older (>65 years) and younger patients (<35 years). Older patients with tilt-positive tests tended to exhibit higher baseline epinephrine (E) concentrations and lesser E surge before development of syncope than younger patients (<35 years), whereas both groups manifested comparable norepinephrine (NE) responsiveness.
本研究比较了老年（>65岁）和年轻患者（<35岁）因倾斜诱发的血管迷走性晕厥相关的动脉儿茶酚胺浓度变化。倾斜试验阳性的老年患者与年轻患者（<35岁）相比，晕厥发生前往往表现出更高的基线肾上腺素（E）浓度和更小的E激增，而两组的去甲肾上腺素（NE）反应性相当。
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