User Guide

Directions for use Chapter 4 Adjust monitoring settings and patient information 45
Lead selection: ECG and respiration
Task Clicks at Virtual Monitor Notes
Change the RESP lead. 1. ECG/RESP
2. MORE
3. RESP LEAD
Lead indicators are shown in the respiration waveform areas
of the Virtual Monitor and Waveform Window.
Select or change ECG
lead for display.
Note: If a Virtual Monitor
represents a Propaq
Encore, Propaq CS or
Welch Allyn 1500 Patient
Monitor, the leads that
you select for ECG 1 and
ECG 2 are used also for
arrhythmia analysis.
For details regarding
leads used for arrhythmia
and ST-segment
analyses, for all types of
patient monitors, see
Table 35 on page 191 and
Table 36 on page 193.
1. ECG or ECG/RESP
2. ECG1 LEAD
3. ECG2 LEAD
Available leads:
Monitors using 5-lead ECG cables: Leads I, II, III, aVR, aVL,
aVF and V
Lead indicators: Indicators are shown in ECG waveform
areas of each patient’s Virtual Monitor and Waveform
Window, and in the Wave Select status window.
If you want to review waveforms from all leads, view the
patient’s Waveforms Review window. For instructions, see
page 104.
Propaq Encore, and Propaq CS monitors--changing
leads when they are using two lead vectors:
If you change the ECG1 Lead from a V lead to a limb lead, the
ECG2 Lead changes to a V lead.
If you change the ECG1 Lead from a limb lead to a V Lead, the
ECG2 Lead changes to Lead II.
Welch Allyn 1500 Patient Monitor, Propaq LT monitor--
leads shown at Acuity System and patient monitor:
Select the same leads at both places to view ECG information
from the same leads in both places.
A lead failure for Propaq LT monitor patients can result in lead
selections that are different at the Acuity Central Station.
WARNING Ensure these things to minimize false HR, Arrhythmia Analysis and ST Analysis alarms, and to
achieve optimal event detection and analysis:
•ECG cable, lead wires and electrodes are undamaged.
•Patient’s skin is properly prepared.
•Electrodes are placed using standard good practices.
•5-wire ECG cable is used. A 3-wire cable limits arrhythmia and ST-segment analyses to a single lead, and ST
analysis is disabled when a lead failure occurs.
•LL electrode is connected. Otherwise, only one ECG lead is available and arrhythmia and ST-segment
analyses are effected.
•Patient monitor and Virtual Monitor display these things:
-HR numeric and ECG waveform
-Non-noisy signal. If signal is noisy, reduce patient movement and increase distance from other electrical
devices.
-Correct patient mode for the patient
•Virtual Monitor ECG 1 and ECG 2 display these things:
-ECG waveform
-Waveform amplitude at least 160 µV, peak-to-peak
-QRS complex amplitude at least twice the P or T wave amplitude
WARNING Minimize patient movement during a RELEARN, as movement creates noise during the reading. If
the system learns an abnormal rhythm or learns a rhythm during noise, it designates the learned rhythm as
normal. Thereafter, rhythms of this type might not trigger an alarm. Ensure that the patient remains still for 5
minutes after the RELEARN before allowing them to move.
Table 2. Typical monitoring functions at the Virtual Monitor