In a “normal” electrocardiogram (ECG), the transition of the QRS axis in the precordial leads occurs between leads V 3 and V 4 (i.e., there is a dominant S in V 3 and a dominant R in V 4).
Mike Moss: It is true that large scale low pressure systems in the Southern Hemisphere have winds that spiral into them in a clockwise manner, as opposed to the counterclockwise flow around lows in ...
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