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 ...
ECG parameters As covered in part 1, an ECG is a non-invasive method of monitoring the electrical activity of the heart. It is recorded onto specialised ECG paper, which runs at 25mm/second; the ...
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