While most people worry about their heart racing too fast, a slow heart rate can be just as concerning. Medically known as bradycardia, this condition means your heart is beating slower than normal—typically under 60 beats per minute when you’re at rest.

Now, for athletes and highly conditioned individuals, a slower heart rate may simply be a sign of a strong, efficient heart. But for many others, bradycardia could indicate an underlying problem with the heart’s electrical system—one that requires medical attention. Let’s walk through what this condition really means, why it happens, and when to seek help.

What Is Bradycardia?

Bradycardia is defined as a resting heart rate that’s consistently below 60 beats per minute (bpm). That doesn’t mean every low reading is a red flag—your heart rate naturally slows during sleep or periods of deep relaxation. But if your pulse is too slow and you’re experiencing symptoms, it could mean your heart isn’t pumping enough oxygen-rich blood to the rest of your body.

Think of your heart like an engine. When it idles too low, it may not generate enough power to keep all systems running.

What Causes Bradycardia?

Bradycardia occurs when the heart’s electrical system (specifically the sinus node, which acts as the natural pacemaker) fires signals too slowly or inconsistently. Causes include:

• Aging or heart tissue damage from a previous heart attack

• Congenital heart defects

• Electrolyte imbalances, such as abnormal potassium or calcium levels

• Hypothyroidism (underactive thyroid)

• Sleep apnea

• Certain medications, including beta-blockers or sedatives

• Infections like myocarditis or Lyme disease

• Sick Sinus Syndrome or AV block, conditions that directly affect how electrical signals travel through the heart.

Symptoms of Bradycardia

Some people with bradycardia feel fine—especially if they’re young and athletic. But when the heart beats too slowly for your body’s needs, symptoms may appear, including:

• Fatigue or weakness

• Dizziness or lightheadedness

• Shortness of breath

• Chest pain

• Fainting (syncope) or near-fainting spells

• Memory problems or confusion

These signs occur because the brain and body aren’t receiving enough oxygenated blood.

Is Bradycardia Dangerous?

Yes—and no. In a healthy, active person, bradycardia might not be a concern. But when it’s tied to structural heart problems or electrical conduction issues, it can lead to:

• Heart failure

• Low blood pressure

• Sudden cardiac arrest

The danger lies in how slow the heart is beating and whether it’s causing symptoms or affecting organ function.

Diagnosing Bradycardia

A slow heart rate isn’t a diagnosis in itself—it’s a symptom that needs context. At Apex Heart & Vascular Center, we begin with:

• Electrocardiogram (EKG) – to identify rhythm issues

• Holter monitor – 24- to 48-hour monitoring of heart rhythm

• Event monitor – to capture intermittent slow heart episodes

• Echocardiogram – to evaluate heart structure and function

• Blood tests – to check thyroid, electrolyte levels, or underlying infections

We assess your overall cardiovascular health, medications, and lifestyle to understand the big picture.

How Bradycardia Is Treated

Treatment depends on what’s causing the slow heart rate. Some cases require no treatment, while others need intervention:

• Adjusting medications that may be slowing your heart

• Treating underlying conditions like hypothyroidism or sleep apnea

• Pacemaker implantation for advanced bradycardia or heart block—this small device regulates your heartbeat, ensuring your body gets the oxygen it needs.

When to See a Cardiologist

If you’re feeling unusually tired, faint, short of breath, or notice a persistently slow pulse, don’t ignore it. These could be signs your heart is struggling to keep up.

At Apex Heart & Vascular Center, with locations in Houston, Tomball, and Cypress, our board-certified heart specialists are here to help. We offer comprehensive evaluations, advanced diagnostics, and personalized treatment for all types of heart rhythm issues—including bradycardia. Your heart’s rhythm is your body’s rhythm. When it slows down, it’s time to speak up.  Call us at (832) 305-5977 or Book Your Consultation Online to find answers, relief, and peace of mind.

Disclaimer: This blog is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider. In case of a medical emergency, call 911 immediately.