Step-by-step guide to calculating heart rate from ECG strips using 300 Rule, 6-Second Method, and 1500 Rule. Includes pitfalls to avoid, irregular rhythm solutions, and real-world tips from ER experience.

Cardiologist's guide to understanding left and right axis deviation on ECG. Learn causes, diagnostic methods, red flags, treatment pathways, and clinical interpretation with practical examples.

Cardiologist's guide to third degree heart block ECG: Recognize critical symptoms, emergency response protocols, pacemaker options compared, survival statistics, and long-term management. Learn why this is a medical emergency.