sinus bradycardia

Sinus bradycardia is a type of arrhythmia, or abnormal heart rhythm, where the heart rate slows to 60 beats per minute or less. While a slow heart rate can be normal for athletes or during sleep, it can indicate heart disease if accompanied by symptoms like weakness, confusion, palpitations, or fainting (syncope). This specific type of bradycardia occurs when the sinoatrial node, the heart's natural pacemaker, doesn't function properly. In some cases, if bradycardia is severe or alternates with rapid heart rates, an artificial pacemaker may be needed. Other causes can include certain medications or heart block, where electrical impulses are not properly transmitted through the heart.12