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Testers designed to assess the performance of external pacemakers that use invasive (e.g., transthoracic) or noninvasive electrodes; they can usually measure, evaluate, display, and/or record a set of pacemaker parameters and/or waveforms, such as amplitude, rate, and pulse width of the pacing current signals. These testers typically consist of an electronic unit including a display, measuring devices (e.g., current, time), and appropriate sensors; some testers can simulate the electrocardiographic signal and arrhythmia waveform to verify the monitoring capabilities of pacemaker. External pacemaker testers are sometimes used with manikins for training purposes.
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