The heart's normal electrical rhythm. The SA node fires at 60–100 bpm, impulses conduct normally through the atria, AV node, and ventricles.
SA node fires normally at 60–100 bpm, impulses conduct through normal pathways
The sinoatrial (SA) node in the right atrium acts as the heart's natural pacemaker. It generates electrical impulses that spread through the atria, pause briefly at the AV node, then rapidly conduct through the ventricles via the His-Purkinje system.
Normal finding — no treatment needed