目的：探讨心电向量图（VCG）诊断左前分支传导阻滞（LAFB）的准确性及临床应用价值。
Aim: To ascertain the diagnostic accuracy and clinical efficacy of vector-cardiography(VCG) for diagnosing conduction block in left forearm(LAFB).
目的：探讨心电向量图（VCG）诊断左前分支传导阻滞（LAFB）的准确性及临床应用价值。
Aim: To ascertain the diagnostic accuracy and clinical efficacy of vector-cardiography(VCG) for diagnosing conduction block in left forearm(LAFB).
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