A third type of angina, called variant angina, occurs rarely.

第三种心绞痛:变异性心绞痛发病率低.

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Variant angina is caused by a spasm a coronary artery.

变异性心绞痛是由于冠状动脉的痉挛引起的.

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Objective To investigate the clinical and angiographic characteristics and follow - up in patients with variant angina pectoris.

目的研究变异型心绞痛患者的临床、冠状动脉造影特点及随 访 结果.

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Variant angina is rare . It accounts for only about 2 out of 100 cases of angina.

变异性心绞痛相对罕见一些,其占总心绞痛病例的2%左右.

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