数字血管功能与Framingham心脏研究中的心血管风险因素的截面关系
Naomi M Hamburg1, Michelle J Keyes, Martin G Larson
1Cardiology Section, Whitaker Cardiovascular Institute, School of Medicine, Boston University, Boston, Mass 01702, USA.
数字脉冲振幅增大,这是血管扩展功能的衡量标准,与心血管风险因素有关. 这项研究探讨了脉冲振幅与BMI,胆固醇,糖尿病和吸烟等因素之间的关系.
科学领域:
- 心血管生理学心血管生理学
- 血管功能的评估.
- 流行病学 流行病学
背景情况:
- 数字脉冲振幅增大是一种对外围血管扩张功能的新测量方法,部分由氧化介导.
- 基线数字脉冲振幅反映了外围动脉律.
- 数字脉冲振幅,高血压反应和心血管风险因素之间的社区层面的关系尚未得到充分理解.
研究的目的:
- 调查数字脉冲振幅和数字高血压反应与心血管风险因素之间的关联.
- 探索数字脉冲振幅测量的临床实用性和预测价值.
主要方法:
- 1957年利用指尖外围动脉度计 (PAT) 测量数字脉冲振幅,来自弗雷明汉第三代队列的参与者.
- 评估由前臂袖口封闭引起的反应性高血压,测量脉冲幅度随时间变化.
- 计算了PAT比率 (脉冲振幅比的对数) 来量化高血压反应,调整了基线和系统效应.
主要成果:
- 心血管风险因素与PAT比率的关系在90-120秒后膨胀间隔中表现最强.
- 男性的性别,较高的体重指数,高的总和高血脂胆固醇比率,糖尿病,吸烟和降脂治疗与PAT比率相反相关.
- 年龄的增加与PAT比率有积极的关联,表明血管反应发生了变化.
结论:
- 反应性高血压表明指尖脉冲振幅的时间依赖性增加.
- 通过PAT比率测量数字血管扩展功能,与多种传统和代谢性心血管风险因素有显著关系.
- 需要进一步的研究来确定数字脉冲振幅在心血管风险评估中的临床实用性和预测价值.
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