Explanation: In a normal ECG the R wave should progressively increase in amplitude as you move from V1 to V2. The R wave should become larger than the S wave for the first time in lead V4. If the R ...
1 Department of Family Medicine, University of Washington, Seattle, Washington, USA 2 Division of Ciology, University of Washington, Seattle, Washington, USA 3 Division of Ciology, Seattle Children's ...
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