目的观察急性冠脉综合征(ACS)患者冠脉成形术(PTCA)前后血浆组织型纤溶酶原激活物(t-PA)及纤溶酶原激活抑制剂(PAI-I)的动态变化。探讨PTCA对机体纤溶功能的影响。方法采用发光底物法对36例ACS患者在PTCA前及后4、12、24、48、72 h时间...目的观察急性冠脉综合征(ACS)患者冠脉成形术(PTCA)前后血浆组织型纤溶酶原激活物(t-PA)及纤溶酶原激活抑制剂(PAI-I)的动态变化。探讨PTCA对机体纤溶功能的影响。方法采用发光底物法对36例ACS患者在PTCA前及后4、12、24、48、72 h时间段测定血浆中t-PA和PAI-I的活性。结果PTCA术后4、12、24、48、72 h t-PA活性明显降低,但术后24 h开始t-PA活性呈逐渐升高趋势。PTCA术后4、12、48、72 h PAI-I活性明显升高,但术后24 h开始PAI-I活性呈逐渐下降趋势。结论ACS患者PTCA后存在着明显的纤溶功能低下,纤溶水平的高低与PTCA治疗效果及再梗塞发生有关。提示机体纤溶功能影响PTCA的手术效果。展开更多
Objective The purpose of this study was to evaluate the fibrinolytic response to exercise in patients with unstable angina pectoris(UAP) compared with an age - matched control group. Methods We measuredtissure- type p...Objective The purpose of this study was to evaluate the fibrinolytic response to exercise in patients with unstable angina pectoris(UAP) compared with an age - matched control group. Methods We measuredtissure- type plasminogen activator (t- PA) activity and plasminogen activator inhibitor 1(PAI- 1) activitybefore and after treadmill exercise test in 20 healthy subjects and 25 patients with UAP. ResultsResting t - PA activities were similar between two groups, but resting PAI- 1 activity was higher in UAP groupthan in control. Although both groups showed significant increase in t- PA activity with exercise, post - exerciset - PA activity was significantly lower in patients with UAP than in control (0.96± 0.45IU/ml vs 1.89± 0.68I U/ml,P<0.01), Post - exercise PAI- 1 activity was still much higher in UAP group than in control (8.20±2.28A U/ml vs4.21± 0.68A U/ml, P<0.01). Conclusion There existed impaired fibrinolysis in patients with UAP not only at restbut also alter exercise loading.展开更多
文摘目的观察急性冠脉综合征(ACS)患者冠脉成形术(PTCA)前后血浆组织型纤溶酶原激活物(t-PA)及纤溶酶原激活抑制剂(PAI-I)的动态变化。探讨PTCA对机体纤溶功能的影响。方法采用发光底物法对36例ACS患者在PTCA前及后4、12、24、48、72 h时间段测定血浆中t-PA和PAI-I的活性。结果PTCA术后4、12、24、48、72 h t-PA活性明显降低,但术后24 h开始t-PA活性呈逐渐升高趋势。PTCA术后4、12、48、72 h PAI-I活性明显升高,但术后24 h开始PAI-I活性呈逐渐下降趋势。结论ACS患者PTCA后存在着明显的纤溶功能低下,纤溶水平的高低与PTCA治疗效果及再梗塞发生有关。提示机体纤溶功能影响PTCA的手术效果。
文摘Objective The purpose of this study was to evaluate the fibrinolytic response to exercise in patients with unstable angina pectoris(UAP) compared with an age - matched control group. Methods We measuredtissure- type plasminogen activator (t- PA) activity and plasminogen activator inhibitor 1(PAI- 1) activitybefore and after treadmill exercise test in 20 healthy subjects and 25 patients with UAP. ResultsResting t - PA activities were similar between two groups, but resting PAI- 1 activity was higher in UAP groupthan in control. Although both groups showed significant increase in t- PA activity with exercise, post - exerciset - PA activity was significantly lower in patients with UAP than in control (0.96± 0.45IU/ml vs 1.89± 0.68I U/ml,P<0.01), Post - exercise PAI- 1 activity was still much higher in UAP group than in control (8.20±2.28A U/ml vs4.21± 0.68A U/ml, P<0.01). Conclusion There existed impaired fibrinolysis in patients with UAP not only at restbut also alter exercise loading.