The following best practices are recommended to obtain an ECG
with a stable baseline, free of noise and motion artifacts:
• Ensure surface electrodes are new. Avoid using electrodes from
packaging that was previously opened. Electrodes dry out quickly
after the package is opened.
• Ensure enough electrode gel is on the electrode contact point.
Verifying a Clean ECG
Observing the ECG on the screen
1. Observe the ECG signal on the Model 3120 Programmer screen.
Each ECG signal should have a stable baseline and be free of
noise and motion artifacts.
2. Enter the full screen view to zoom in on the signal by clicking the
magnifying glass
may be adjusted to enhance view. Manual gain adjustments will
not affect AST results or printed reports.
Consider the following troubleshooting tips if noise or a wandering
baseline is observed:
• Replace ECG cables used to collect surface ECGs.
• In particularly difficult cases, re-prepare the skin with some light
abrasion at the electrode sites (using a gauze pad, for example).
• Ask patient to inhale then exhale and hold for 10 seconds to
manage respiratory artifact.
Using the AST Application
The AST application is layed out in tabs. Complete each tab to run the
screening tests.
Information tab
Complete the patient information (Patient Name or ID and Date of Birth
are required fields).
NOTE: This information can be edited at any point in the screening
process.
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button in the upper right-hand corner. Gain