15 Lead Placement Including V7-V9

**Semantic type:** Spatial Concept

**Definition:** An electrocardiogram (ECG) lead placement whereby 15 lead points are recorded using the standard 12 lead ECG positions and 3 additional leads placed on the back of the chest. The positions of these posterior leads V7 to V9 are at the same vertical level as V6 and at the horizontal positions of the left posterior axillary line (V7), left scapular line (V8), and left paravertebral line (V9).

**Synonyms:** - 15 LEAD INCLUDING V7-V9