Welch Allyn Medical Diagnostic Equipment Medical Alarms 8.1x Manual Do Utilizador

Directions for use

Chapter 4   Adjust monitoring settings and patient information

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 

 on page 187 and 

 on page 189.

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 

.

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.