Electrocardiogram (ECG) illustration showing a normal ECG wave in lead V4. Under normal circumstances, the sinus P wave of lead V4 is upright, the QRS wave is QRS pattern, and the T wave is upright.V3 and V4 chest leads belong to the transition leads. Under normal conditions, the amplitudes of R wave and S wave are equal, which can be seen in these two leads.

px px dpi = cm x cm = MB
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TOP26665026

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達志影像

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RM

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