高血压伴冠心病患者冠状动脉狭窄与周围动脉功能关系的研究

目的分析冠状动脉的病变支数及狭窄程度与周围动脉弹性功能的关系。方法对88例高血压病患者与41例无高血压病临床怀疑冠心病的患者,在冠状动脉造影前后采用美国FDA批准的PULSEMETRIC动脉功能测定仪通过测定肱动脉脉搏图计算出反应血管弹性的参数,包括系统血管顺应性（SVC）、系统血管阻力（SVR）、肱动脉顺应性（BAC）及肱动脉阻力（BAR）,分析高血压伴及不伴冠状动脉病变者的动脉弹性的特点。结果（1）高血压组严重冠状动脉病变（冠状动脉病变〉12支以上）发生率[64．7％（57／88）]高于血压正常组[27．1％（11／41）,P〈0．05）;（2）高血压组的SVC[（0．85±0．10）ml／mmHg（1mmHg=0．133kPa）]、BAC[（0．047±0．011）ml／mmHg]明显低于非高血压组[SVC（1．17±0．11）ml／mmHg,BAC（0．063±0．010）ml／mmHg,均P〈0．05],高血压组的脉压则明显高于非高血压组[（78±20）mmHg比（47±19）ml／mmHg,P〈0．01];（3）高血压组内,动脉弹性有随冠状动脉病变加重而下降的趋势,而动脉弹性功能参数在不同的性别存在不同的变化;（4）当血压水平达到2～3级,SVC有随冠状动脉病变程度加重而降低的趋势。结论在高血压病患者中,无创方法测得的动脉功能参数在一定程度上可以反映其冠状动脉病变程度。

Association between coronary artery stenosis and peripheral artery function in normotensive and hypertensive patients with coronary artery disease

OBJECTIVE: To observe the relationship between the parameters of artery elasticity and coronary artery stenosis in normotensive and hypertensive patients with coronary artery disease (CAD). METHODS: Systemic vascular compliance (SVC), systemic vascular resistance (SVR), brachial artery compliance (BAC) and brachial artery resistance (BAR) were measured by Dynapulse 200M (Pulse Metric, Inc., USA) in 88 hypertensive and 41 normotensive patients with chest pain before coronary artery angiography. RESULTS: (1) The prevalence rate of severe coronary disease (> or = 2 coronary branches) was higher in hypertensives than in normotensives (64.7% vs. 27.1%, P < 0.05); (2) the peripheral artery buffering function was significantly lower in hypertensives than in normotensives [SVC: (0.85 +/- 0.10) ml/mm Hg (1 mm Hg = 0.133 kPa) vs. (1.17 +/- 0.11) ml/mm Hg; BAC: (0.047 +/- 0.011) ml/mm Hg vs. (0.063 +/- 0.010) ml/mm Hg, all P < 0.05]; (3) Lower arterial elasticity was associated with severe coronary artery stenosis. CONCLUSION: The non-invasive obtained artery elasticity is associated with the degree of coronary artery stenosis in hypertensive patients with CAD.