12 Lead Placement Mason Likar

**Semantic type:** Classification

**Definition:** An electrocardiogram (ECG) lead placement whereby 12 leadpoints are recorded but the standard lead positions have been modified for ECG recording during exercise. Exercise stress testing requires moving the limb electrodes to more central positions on the thorax. The electrodes are placed in bony prominences close to the bases of the respective limbs in order to avoid skeletal muscle artifact, provide stability for recording electrodes and to record waveforms similar to the standard limb sites.

**Synonyms:** - 12 LEAD MASON LIKAR - 12 Lead Mason Likar