A first-degree AV node block occurs when conduction through the AV node is slowed, thus delaying the time it takes for the action potential to travel from the SA node, through the AV node ...

A first-degree atrioventricular node block occurs when conduction through the AV node is slowed, thereby delaying the time it takes for the action potential to travel from the sinoatrial node ...

or irregular heartbeat Some people experience asymptomatic and temporary first-degree heart block. It can arise in otherwise healthy young adults when they’re sleeping or at rest. It can be ...