The axis of the ECG is the major direction of the overall electrical activity of the heart. It can be normal, leftward (left axis deviation, or LAD), rightward (right axis deviation, or RAD) or ...
A rather anxious 23-year-old man attends with palpitations. A careful history suggests simple ectopic beats, perhaps exacerbated by his anxiety. There are no red flags in the history, he is a ...
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