甲状腺功能障碍的血液动力学:心脏工作增加和与血管扩张相关的发现
Nelli Suonsyrjä1, Saara Metso2, Eeva Moilanen3
1N Suonsyrjä, Tampere University, Tampere, 33014, Finland.
European thyroid journal
|October 2, 2024
概括
甲状腺功能障碍症会导致高动力循环,心率和心脏输出增加,以及血管阻力降低. 这导致冠状动脉输液的不利变化和心脏工作量增加,影响心血管健康.
科学领域:
- 心血管生理学心血管生理学
- 内分泌学 在内分泌学.
- 非侵入性的血液动力学.
背景情况:
- 甲状腺功能障碍与心血管疾病和死亡率的增加有关.
- 在甲状腺功能障碍的这些风险背后的精确的血液动力学机制仍然不完全理解.
研究的目的:
- 为了比较甲状腺功能高的患者和匹配的甲状腺控制体之间的非侵入性血液动力学参数.
- 阐明导致甲状腺功能障碍的心血管并发症的血液动力学变化.
主要方法:
- 在20名甲状腺过高患者和60名年龄,性别,BMI和吸烟匹配的甲状腺控制组中进行了非侵入性血液动力学测量.
- 测量包括全身阻抗心脏图,辐射脉冲波分析,以及休息和抬头倾斜时的手指血压.
- 在开始抗甲状腺药物治疗后的中位数6天内收集了数据,而患者仍然是甲状腺功能高的.
主要成果:
- 甲状腺过高患者表现出高动态循环:心率增加 (+19bpm),心脏指数 (+28%),左心脏工作 (+31%) 与系统血管阻力降低 (-18%).
- 甲状腺功能障碍症患者的外周手指血压较低,尽管有类似的中央大动脉和辐射压力.
- 高甲状腺症患者的脉压放大率更高,心下内脏活力比率降低了19%,表明冠状动脉输液受损.
结论:
- 甲状腺功能障碍诱导了高动态的循环状态,其特征是血管阻力降低和周围血压变化.
- 在甲状腺功能高的患者中观察到左心脏工作量增加和冠状动脉 perfusion 条件减少.
- 这些血液动力学变化可能会导致与甲状腺功能障碍相关的心血管风险升高.
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