GE Medical Systems marquette Dash 2000, Operator'S Manual, Page: 167 / 272

Revision C Dash 2000 Patient Monitor 8-27
2005873-001
Problem:
Inaccurate internal
pacemaker detection Solution:
Use pacemaker processing:
1. Select ECG parameter label.
2. Display the lead of ECG with the greatest amplitude in the top
waveform position.
3. Select ANALYSIS SETTINGS.
4. Select DETECT PACE.
5. Select either PACE 1 or PACE 2.
NOTES:
•
In general, be aware that a pacemaker pulse could be falsely
counted as a QRS during asystole.
•
Pace 1 mode analyzes the presence of a pacer spike, assesses the
waveform for residual pacemaker energy, and determines the
presence of an R wave following the pacer spike. If an event occurs
during the first few milliseconds following the pacer spike, it will be
counted.
•
Pace 2 mode analyzes waveforms with the added capability of
minimizing the chance of counting severe residual pacemaker
energy as QRS complexes. In relation to the event rejection
capability of Pace 2 pace mode, certain morphologies may not be
detected. Arrhythmia calls like asystole or pause may be made with
heart rate identified as less than actual.
•
Again, pacemaker patients should be kept under close observation.
The appropriate pace mode may be determined at the time the pacemaker
patient is admitted to the monitoring system. The Pace 2 mode is
recommended for use whenever possible.
Check ECG signal from patient:
1. Check/adjust lead placement; refer to the Electrode Placement for
Pacemaker Patients section in this chapter.
2. Check/perform skin preparation.
3. Check/replace electrodes.