Baseline Wander
April 24th, 2019
Overview
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.
Causes of Baseline Wander
- Patient movement - especially respiration
- Inadequate contact between electrodes and body surface
- Improper skin preparation
- Patient sweating
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