4:1 block. High-grade AV block (4:1 conduction ratio) Atrial rate is approximately 140 bpm. Ventricular rate is approximately 35 bpm . See High Grade AV Block.
4:1 block. High-grade AV block (4:1 conduction ratio) Atrial rate is approximately 140 bpm. Ventricular rate is approximately 35 bpm . See High Grade AV Block.