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Effect of Carvedilol on the Coronary Vascular Endothelial Function after Percutaneous Transluminal Coronary Angioplasty
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作者 苏显明 马奕 崔长琮 《South China Journal of Cardiology》 CAS 2003年第2期90-92,共3页
Objectives To understand the effect of carvedilol on the coronary vascular endothelial function of the patients with coronary heart disease after percutaneous transluminal coronary angioplasty (PTCA). Methods 51cases,... Objectives To understand the effect of carvedilol on the coronary vascular endothelial function of the patients with coronary heart disease after percutaneous transluminal coronary angioplasty (PTCA). Methods 51cases, having one or more than two branches narrow ( ≥ 70% ) , were diagnosed by coronary angiography. These patients were divided randomly into carvedilol group (n = 28) and control group ( n = 23) who did not take carvedilol. Endothelin (ET) and nitro dioxide (NO) levels of peripheral blood were measured before and after PTCA, before and after two weeks by taking earvedilol. Results Compared with the ET and NO levels before PTCA, ET were markedly increased and NO were decreased after PTCA (p <0. 05) ; compared with the ET and NO levels before taking carvedilol, ET were decreased and NO were increased after two week (p <0.05 ) , but the ET and NO levels of the control group did not change in the period of two weeks observation (p > 0.05). Conclusions Carvedilol may improve the coronary vascular endothelial function after PTCA. 展开更多
关键词 Qercutaneous transluminal coronary angioplasty Endothelin ntro dioxide Vascular endothelial function Carvedilol
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基于PPS的多级水箱控制系统的设计与研究
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作者 张燕 《内燃机与配件》 2017年第20期125-127,共3页
过程控制系统包括对液位、压力、温度等参数的控制,多级水箱控制系统是验证过程控制理论的常用设备之一。本文利用PAC系统强大的运算能力和PPS软件的功能,设计了一套多级水箱控制系统,以满足模拟现代工业企业生产过程控制的要求,实际运... 过程控制系统包括对液位、压力、温度等参数的控制,多级水箱控制系统是验证过程控制理论的常用设备之一。本文利用PAC系统强大的运算能力和PPS软件的功能,设计了一套多级水箱控制系统,以满足模拟现代工业企业生产过程控制的要求,实际运行取得了良好的效果。 展开更多
关键词 多级控制 PPS PAC
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