Sinus bradycardia: When a slow heartbeat signals trouble or health

Sinus bradycardia is a condition where the heart beats slower than usual, often below 60 times per minute. While it can sometimes signal good cardiovascular health in athletes or young adults, it may also point to an underlying medical issue needing attention. Doctors identify sinus bradycardia through a physical exam, medical history review, and tests such as an electrocardiogram (EKG). Symptoms can vary but may include dizziness, fatigue, shortness of breath, chest pain, confusion, or fainting.

The condition has multiple possible causes. These range from heart damage and inflammation to electrolyte imbalances, sleep apnoea, thyroid problems, infections, and certain medications. A condition called sick sinus syndrome may also trigger it. Risk factors overlap with those for heart disease, including older age, family history, smoking, high blood pressure, high cholesterol, obesity, and diabetes. Treatment depends on the root cause. Doctors may adjust medications, address underlying conditions, or, in severe cases, implant a pacemaker. Recovery from pacemaker surgery can take several weeks. Preventive measures focus on heart health. A balanced diet, regular exercise, maintaining a healthy weight, and managing conditions like high blood pressure or cholesterol can all help reduce risks.

Sinus bradycardia can be harmless in some individuals but may require medical intervention in others. Early diagnosis and appropriate treatment can help manage symptoms and improve long-term heart health. Lifestyle changes also play a key role in reducing associated risks.