Welch Allyn Vital Signs Monitor, Propaq Encore - Quick Reference Guide - Manual (Page 38)

32 Patient monitoring Welch Allyn Propaq Encore Vital Signs Monitor
3. If you are using non-gelled electrodes, apply a 1 /
4
to 1 /
2
inch mound of gel over the
electrode contact area.
4. Apply the electrodes to the patient.
5. Support the ECG cable so it does not stress the electrode wires, ECG cable
connectors, or electrodes.
6. If an electrosurgical unit is going to be used, place the ECG cable and electrode wires
as far as possible from the surgical site and from the electrosurgical return electrode
and its cables. This will minimize interference.
By now there should be some kind of ECG waveform displayed on the monitor. A
heart rate should be displayed to the right of the waveform. Depending on how the
Note Some electrodes may be subject to large offset potentials due to polarization.
This effect is most likely when dissimilar metals are used for different electrodes,
and may be severe enough to prevent obtaining an ECG trace. Furthermore,
recovery time after application of defibrillator pulses may be compromised when
using electrodes of dissimilar metals. Squeeze bulb electrodes, even if all of the
same metal, are particularly vulnerable to this effect. Stainless steel needle
electrodes are prone to having large erratic offset drifts, and are not
recommended.
Note Two RESP leads are available. Choose the one that gives you the best signal. If
neither signal is adequate, it may be necessary to experiment with nonstandard
electrode placement such as placing the RA and LA electrodes on the respective
mid-axillary lines just above the level of the nipples.
(G)=LA (-)=RA (+)=LL
G
+
RA LA
LL
If using MCL1, select LEAD II on the
Propaq, and use all three electrodes.
Standard 3-lead
Configuration
Marriott
Configuration
MCL 1
One of six “v lead”
electrode placement
sites for the fifth (c)
lead.
LL
LA
RA
RL
5-lead Configuration
V6 V1
Neonate 3-lead Configuration