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Test Findings

Baseline Wander



  • This type of interference originates from the interface of the skin and the electrode, and makes interpretation of high amplitude waves (e.g. the T wave or ST segment) difficult. In certain circumstances, baseline wander may mimic life-threatening arrhythmias.
    • Look For

    • Low-frequency variation of the isoelectric line.
    • Baseline Wander
    • Causes of Baseline Wander

    • Patient movement - especially respiration
    • Inadequate contact between electrodes and body surface
    • Improper skin preparation
    • Patient sweating
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