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再狭窄产生的不稳定心绞痛(UA)病理生理机制与典型UA不同。继发于再狭窄的UA平滑肌细胞的增殖和血管反应性增高要比血栓形成更重要,在这项调查中,研究人员假设治疗再狭窄导致的UA病人预防缺血反复发作时静脉应用硝酸酯类药物可能更有效,肝素效果较差。对象与方法血管成形术后6月内出现UA的200名住院
The pathophysiology of unstable angina (UA) due to restenosis is different from the typical UA. Proliferation of UA smooth muscle cells secondary to restenosis and increased vasoreactivity are more important than thrombosis. In this survey, investigators hypothesized that the use of nitrates in patients with UA caused by restenosis to prevent recurrent ischemic attacks Drugs may be more effective and heparin less effective. Subjects and Methods 200 hospitalized UA occurred within 6 months after angioplasty