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1·Discuss the pathogenic mechanism of Prinzmetal's variant angina pectoris. 

探讨变异型心绞痛的发生机制。

2·Control analysis of clinical manifestation and coronary angiography in patients with variant angina.

变异性心绞痛临床表现与冠脉造影的对照分析。

3·Objective To approach the relationship of clinical manifestation and condition of coronary artery in patients with variant angina.

目的探讨变异型心绞痛患者临床表现与冠脉病变的关系。

4·Objective to investigate the rule of sudden death and malignant arrhythmia occurred to variant angina pectoris patients and provide basis for clinical treatment.

目的探讨变异型心绞痛发作时恶性心律失常乃至猝死的发生规律，为临床治疗提供依据。