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单纯左前支阻滞已为临床工作者所熟悉。然而,下壁心肌梗塞合并左前支阻滞的心电图诊断却甚为困难。因为左前支阻滞可掩盖小范围的下壁梗塞图形,反之下壁梗塞也常常使左前支阻滞的图形表现不出来。近年的研究证实,心电向量图有助于诊断下壁心肌梗塞合并左前支阻滞,这就为本病的动态观察及估计予后提供了方便。本文分析了下壁心肌梗塞合并左前支阻滞病人的临床表现,心电向量图和心电图特征及予后,并讨论了其临床重要性。
Simple left anterior branch block has become familiar to clinicians. However, the diagnosis of inferior myocardial infarction with left anterior branch block is very difficult. Because the left anterior branch block can mask a small area of the inferior wall infarction pattern, conversely the lower wall infarction often makes the left anterior branch block the graphics do not show up. Recent studies have confirmed that the ECG vector chart is helpful in the diagnosis of inferior wall myocardial infarction with left anterior branch block, which provides the convenience for the dynamic observation and estimation of this disease. This article analyzes the clinical manifestations of lower myocardial infarction with left anterior branch block, ECG and ECG characteristics and prognosis, and discusses its clinical importance.