User's Manual

ECG
8-17
Changing the Display Resolution
The MONITOR/EXTENDED key determines the display resolution of the ECG
traces.
• The Monitor mode displays a reduced frequency range, but filters out more
noise for better viewing.
• The Extended mode displays a broader frequency range, and also more
noise.
The factory default setting for display resolution is monitor mode.
Selecting Primary and Alternate Heart
Rate Source
You may select a primary rate source as well as enable alternate rate sources.
Rate sources include ECG, ART (arterial pressure), UA (umbilical artery) and
SpO
2
. If you enable one or more alternate sources, a heart rate will be displayed,
if available, from either the primary or an alternate source. If you do not enable
any alternate sources, a heart rate will only be displayed if the primary rate source
is available.
If a heart rate is not available from any source, the message HR UNAVAILABLE is
displayed in the ECG waveform zone, and ??? replace the rate numbers.
!
• Changing the display resolution does not change the waveform
bandwidth used to analyze the ECG signals for arrhythmia and
ST segment level.
Table 3: Display Resolution
Key Telemetry Non-telemetry
MONITOR 0.5 — 30 Hz 0.5 — 40 Hz
EXTENDED 0.05 — 30 Hz 0.05 — 150 Hz
!
• If ART is to be used as an alternate heart rate source,
Spacelabs Medical recommends setting up each monitor with
only one arterial pressure channel.
•Use of SpO
2
as the primary heart rate source is not
recommended by Spacelabs Medical.
CAUTION:
• Cardiovascular Artifact (CVA) detection is disabled for the
respiration channel when using an alternate heart rate
source.
To change the display resolution:
1 Touch ECG.
2 Touch SETUP.
3 Select MONITOR or
EXTENDED.
To select a primary heart rate
source:
1 Touch ECG.
2 Touch SETUP.
3 Touch RATE SOURCE.
4 Select the desired primary rate
source (ECG, ART, UA, or
SPO2).
To enable alternate rate sources:
1 Touch ECG.
2 Touch SETUP.
3 Touch RATE SOURCE.
4 Set the desired alternate
source(s) to ON (ECG, ART,
UA, and/or SPO2).