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needle/pen of the ECGs
moves a specific distance depending on the voltage measured; made on ECG paper [p50]
horizontal axis of the ECG paper
time; used to measure the interval between or duration of specific cardiac events; stated in seconds [p52]
the ECG machine's sensitivity must be calibrated so that a 1-mV electrical signal will produce a deflection measuring exactly...
10 mm tall [p52]
aka deflection, is a movement away from the baseline in a positive (upward) or negative (downward) direction [p52]
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