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According to the polarity of QRS main wave in lead I and aVF, combined with raising or lowering the left and right hands, the frontal QRS electric axis can be visually measured.

According to the polarity of QRS main wave in lead I and aVF, combined with raising or lowering the left and right hands, the frontal QRS electric axis can be visually measured.

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Size Width Height Mp
s 490 px 500 px 0.5
m 980 px 1000 px 2
l 1959 px 2000 px 8
xl 10000 px 10208 px 15

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