User Manual Part 5

Directions for Use Standalone Monitoring 55
Monitoring ECG and Resp
Overview
You can monitor heart signs (ECG) and respiration rate (Resp) using either a 3-lead or a
5-lead ECG cable. Using a 3-lead cable, you can display one signal waveform for lead I, II,
or III. Using a 5-lead cable, you can display either one or two signal waveforms (I, II, III, V;
and if enabled in the configuration, aV
R
, aV
L
, or aV
F
). You can also display the SpO
2
or
Resp waveform in place of an ECG waveform.
Safety
Note
In this manual, lead refers to an ECG electrode or lead wire, and Lead refers to a
waveform source.
WARNING Always monitor and set alarms for SpO
2
when using impedance
pneumography to monitor respiratory function.
WARNING When monitoring respiration via impedance pneumography, always
select the ECG Lead with the most prominent QRS complex. The monitor rejects
cardiovascular artifact, but this function depends upon accurate ECG R-wave
detection.
WARNING Do not place the monitor near another respiration monitor. Resp
measurement frequencies can cause mutual interference.
WARNING Do not perform impedance pneumography on paced patients.
Pacemaker pulses can sometimes be falsely counted as breaths.
WARNING Always keep patient motion to a minimum. Motion artifact can cause
incorrect breath rate or heart rate readings.
WARNING If a disconnected lead is too close to other electrical devices, it can
cause a false heart rate, a false respiration rate, or a failure to display a “Lead Fail”
message.
WARNING The monitor displays + + + for HR numerics between 301-350 beats
per minute. For heart rates above 350 beats per minute, it might display
incorrectly low heart readings, due to intermittent picking of R-waves.