Bradycardia is a condition in which the heart beats more slowly than normal—typically fewer than 60 beats per minute in adults. While some healthy individuals, such as athletes, naturally have a slower heart rate, bradycardia can also indicate a problem with the heart’s electrical system. When the heart beats too slowly, it may not pump enough oxygen-rich blood to the body, leading to fatigue, dizziness, fainting, or even heart failure in severe cases.
At Premier Cardiology, our cardiologists specialize in diagnosing and managing bradycardia, offering a range of treatments to restore normal heart rhythm and improve quality of life.
Causes of Bradycardia
Bradycardia can result from a variety of underlying factors, including:
- Sick sinus syndrome – A disorder of the heart’s natural pacemaker
- Heart block – Partial or complete blockage of electrical signals between the atria and ventricles
- Age-related degeneration of the heart’s electrical pathways
- Previous heart attack or heart disease (Coronary Artery Disease)
- Hypothyroidism (low thyroid hormone levels)
- Sleep apnea
- Certain medications that slow the heart, such as beta-blockers or calcium channel blockers
- Congenital heart defects
Identifying the underlying cause is essential for effective treatment and long-term management.
Symptoms of Bradycardia
Symptoms vary depending on how slow the heart rate is and how well the body compensates. Common symptoms include:
- Fatigue or weakness
- Dizziness or lightheadedness
- Fainting (syncope) (Syncope)
- Shortness of breath
- Chest discomfort
- Confusion or difficulty concentrating
Some individuals may have bradycardia with no noticeable symptoms, which is why regular cardiac check-ups are important.
Diagnosis
Diagnosing bradycardia involves evaluating the heart’s electrical activity over time. Diagnostic tests may include:
- EKG – Records the heart’s electrical signals
- Holter Monitor – Continuous 24–48 hour monitoring of heart rhythm (Arrhythmia Diagnostics)
- Event Monitor – Records heart rhythm during symptoms
- Loop Recorder – Implanted device for long-term monitoring
- Electrophysiology Study (EPS) – Invasive test to pinpoint the source of abnormal heart rhythms
Treatment Options
Treatment depends on the cause of bradycardia and the severity of symptoms.
Lifestyle & Medication Adjustments
- Adjusting or discontinuing medications that slow the heart
- Treating underlying conditions such as hypothyroidism or sleep apnea
Pacemaker Implantation
For persistent or symptomatic bradycardia, a pacemaker may be recommended. This small device regulates the heart’s rhythm, preventing dangerously slow heart rates and improving symptoms such as fatigue and fainting.
Medications
In some cases, medications may be used to control heart rhythm or address underlying conditions, but pacemaker therapy is often the most effective solution for significant bradycardia.
When Bradycardia Becomes Dangerous
Bradycardia can be life-threatening if not treated. Seek immediate care if symptoms include:
- Severe dizziness or fainting
- Shortness of breath
- Chest pain or pressure
- Confusion or difficulty staying alert
With proper diagnosis and management, most patients with bradycardia can lead active, healthy lives.