LECTURES:
1. Vectors & Electrical Axis
2. Vectors & Electrodes
3. Complete ECG Course
4. The EKG Guy Videos

Overview

• Vectors represent electrical impulse created by cardiomyocytes
• Vectors = energy + direction of impulse

Resultant Vector & Electrical Axis

• Represents sum of vectors (electrical impulses) => mean electrical axis
• Each wave & segment on EKG represents sum of vectors as they pass an electrode
• Basics to calculate resultant vector:
• Vectors traveling in same direction => add
• Vectors traveling in opposite direction => subtract
• Vectors traveling at an angle to each other => [add or subtract] + [change direction]