9650-0912-01 Rev. N ZOLL R Series Operator’s Guide 9–1
Chapter 9
ECG Monitoring
The R Series products can be used for either short- or long-term ECG monitoring.
R Series products have built-in circuitry to prevent damage to their ECG monitoring circuits
during defibrillation. Monitoring electrodes, however, can become polarized during
defibrillator discharge, causing the ECG trace to briefly disappear from the screen.
High-quality silver/silver chloride (Ag/AgCl) electrodes minimize this effect. Circuitry in the
unit returns the ECG trace to the display within a few seconds.
You can monitor a patient’s ECG using an ECG patient cable, hands-free therapy electrodes, or
through standard defibrillation paddles.
During ECG monitoring, the R Series displays the following information:
• Five seconds of ECG waveforms
• Heart Rate
• Heartbeat indicator
• ECG source lead (I, II, III, aVR, aVL, aVF, or V with ECG cable; PADS, or PADDLES)
• ECG size relative scale factor - x0.5, x1, x1.5, x2, x3
• Alarm indicator
Whenever more than one waveform is displayed, the selected ECG lead appears as the
uppermost trace (unless the unit is configured for Filtered ECG).
ECG leads are a defibrillation-protected Type CF patient connection.
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