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 患者男性,50岁。无心脏病史。因“直肠病变”行手术治疗,术前心电图检查。【心电图表现】P波:规律发生,P-P间距0.80s,频率75次/分钟,宽0.10s,电压0.15mV。Ⅰ、Ⅱ、Ⅲ、aVF导联为正向,aVR、aVL导联为负向,P电轴正常。胸导联V1呈正负双向 (共 467 字) [阅读本文] >>