A First-Degree AV Block is characterized by a prolonged conduction time through the AV node, resulting in a PR interval greater than 0.20 seconds. Every P wave is still followed by a QRS complex, meaning no beats are actually dropped—it's just a delay. ​Key ECG Finding: PR Interval > 0.20 seconds (or > 5 small boxes) ​Significance: Usually asymptomatic and benign, but important to monitor as it can sometimes progress to a higher-grade block. ​#EKG #ECG #heartblockage #HeartBlock #cardiology | Ho

First Degree Atrioventricular Block - 1st degree AV Block - ECG and Heart Conduction - Electrocardiogram Medical Animation