降低了患有大动脉狭窄和2型糖尿病的患者的峰值压力梯度
Kosuke Minai1, Kazuo Ogawa2, Toshikazu D Tanaka2
1Division of Cardiology, Department of Internal Medicine, The Jikei University Katsushika Medical Center, Tokyo, Japan.
概括
糖尿病会损害心脏能量代谢,可能会降低左心室 (LV) 收缩性. 在大动脉狭窄患者中,较高的HbA1c表示较低的压力梯度,这表明糖尿病恶化了LV功能,AS严重程度可能仅靠压力就被低估了.
科学领域:
- 心脏病学 心脏病学
- 代谢障碍 代谢障碍 代谢障碍
- 心血管生理学心血管生理学
背景情况:
- 已知糖尿病会损害全身能量代谢,对心脏功能有潜在的影响.
- 糖尿病对左心室 (LV) 收缩性的确切临床影响,特别是在像大动脉狭窄 (AS) 这样增加后负荷的条件下,仍然不完全理解.
- 现有研究强调了糖尿病如何影响AS患者的心脏表现的理解上的差距.
研究的目的:
- 为了研究糖尿病对左心室收缩性的影响,在患有大动脉狭窄症 (AS) 的患者中.
- 确定影响AS糖尿病患者峰值压力梯度 (峰值PG) 的危险因素.
- 通过结构方程建模,阐明糖尿病相关因素对AS严重性的直接和间接影响.
主要方法:
- 分析了276名连续AS患者的数据,这些患者接受了心声扫描,心脏导管和血液采样.
- 使用多普勒心声学和简化的伯努利方程计算峰值大动脉速度和峰值压力梯度 (峰值PG).
- 回归分析和结构方程建模 (SEM) 以评估风险因素 (HbA1c,HOMA-IR,年龄,性别等) 的影响. 在峰值PG和大动脉膜区域 (AVA) 上.
主要成果:
- 较高的糖化血红蛋白 (HbA1c) 水平与降低的峰值PG (P < 0.001) 有关,这表明糖尿病AS患者的LV功能受损.
- 年龄与峰值PG增加 (P = 0.004) 和AVA降低 (P = 0.007) 显著相关.
- 通过HbA1c表示的糖尿病被发现可以降低LV收缩性,而HOMA-IR,性别,高血压和脂质失调症对峰值PG没有显著的直接影响.
结论:
- 糖尿病严重损害左心室收缩性在患有大动脉狭窄的患者.
- 葡萄糖代谢不足可能是导致糖尿病患者观察到的LV功能障碍的一个因素.
- 当仅依赖压力梯度时,糖尿病患者的AS严重程度可能会被低估,因此需要全面的评估方法.
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