症状稳定个体和冠脉造影证实冠脉无病变病人对短期暴露于微粒子污染并不敏感。
Indiiduals with stable presentation and those with angiographically demonstrated clean coronaries are not as susceptible to short-term particulate exposure.
方法观察34例经冠状动脉造影确诊为左冠状动脉狭窄而右冠状动脉无病变的冠心病患者，注射造影剂前后QRS时间和额面电轴的变化。
Methods QRS duration and frontal plane QRS axis were measured before and after injection of contrast medium in 34 patients with left coronary artery disease identified by coronary angiography.
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