LECTURES:
1. Standard 12-Lead ECG
2. EKG Paper
3. Full ECG Course
4. The EKG Guy Lectures
Standard 12-Lead ECG
- ECG = sum of action potentials of millions of cardiomyocytes; registers heart’s electrical activity (not contraction)
- 6 limb leads + 6 precordial leads ± rhythm strip
- 6 limb leads: I, II, III, aVR, aVL, aVF
- 6 precordial leads: V1, V2, V3, V4, V5, V6
- Duration: 10 s total (2.5 s of each lead)
- Temporal relationship: everything directly above or below occurs at same time
