- HPI: A dialysis patient with dyspnea
- Key ECG: The artifact manifests a FIXED relationship to the QRS complex — therefore, it has to be related to the heart beat (or to arterial pulsations); ii) Although in opposite directions, the AMPLITUDE of the artifactual deflection in limb leads I and III is equal — but there is no artifact at all in lead II.
- Link to full case @ Dr. Smith’s ECG Blog: 2018-01-30