• 2022-05-31
    Which of the followings indicates abnomal P-wave()
    A: P-wave is upright in lead Ⅱ
    B: P-wave is biphasic in lead Ⅲ.
    C: P-wave is inverted in lead av
    D: P-wave is not obvious in lead avVL
    E: P-wave is inverted in lead V5.