Understanding Third Degree AV Block

 Introduction

If you or a loved one has been diagnosed with a third-degree AV block, you may have questions about what it means and how it affects your health. This article will help you understand the condition in simple terms, covering its symptoms, causes, and management options.

What Is a Third Degree AV Block?

Third-degree AV block, also called complete heart block, is a serious heart condition where the electrical signals between the upper chambers (atria) and lower chambers (ventricles) of the heart are completely blocked. Normally, these signals help your heart beat in a coordinated way. When this communication is disrupted, the atria and ventricles beat independently, leading to an irregular and often dangerously slow heart rate.

Symptoms of Third Degree AV Block

People with third-degree AV block may experience:

Extreme fatigue or weakness

Dizziness or fainting (syncope)

Shortness of breath

Chest pain (angina)

Slow or irregular pulse

Confusion or difficulty concentrating

In severe cases, it can lead to cardiac arrest if not treated promptly.

What Causes Third Degree AV Block?

Several factors can lead to this condition, including:

Ageing (natural wear and tear of the heart’s electrical system)

Heart disease (coronary artery disease, heart attack)

Infections (like Lyme disease or myocarditis)

Medications (certain heart drugs, beta-blockers, calcium channel blockers)

Congenital heart defects (present from birth)

Surgery or trauma affecting the heart

How Does It Affect Health?

Since the heart cannot pump blood efficiently, the body may not get enough oxygen. This can lead to:

Low blood pressure

Organ damage (due to poor blood flow)

Heart failure (if left untreated)

Sudden cardiac arrest (in extreme cases)

Diagnosis and Treatment

If you experience symptoms, your doctor may recommend:

Electrocardiogram (ECG/EKG): To check heart rhythm.

Holter monitor: A portable ECG worn for 24-48 hours.

Echocardiogram: An ultrasound of the heart.

Blood tests: To check for underlying causes.

Health Topic Carousel:

Doctor Speciality: General Physician

Text: Consult Top Specialists

Treatment Options:

1. Pacemaker Implantation: The most common and effective treatment. A small device is placed under the skin to regulate the heart rhythm.

2. Medications: Temporary solutions (like atropine) may be used in emergencies.

3. Lifestyle Adjustments: Avoiding triggers like excessive alcohol or certain medications.

Living with Third Degree AV Block

If you have a pacemaker:

Follow up regularly with your cardiologist.

Avoid strong magnetic fields (MRI machines unless approved).

Stay active but avoid extreme physical strain.

Monitor for symptoms like dizziness or fainting.

Lifestyle Tips for Heart Health

Eat a balanced diet (low in salt, rich in fruits, vegetables, and whole grains).

Exercise moderately (walking, swimming) as advised by your doctor.

Quit smoking and limit alcohol.

Manage stress through relaxation techniques.

When to Seek Emergency Help?

Seek immediate medical attention if you experience:

Fainting spells

Severe chest pain

Extreme shortness of breath

Very slow or irregular heartbeat

Consult a Specialist

If you suspect heart rhythm problems, consult a cardiologist. Early diagnosis and treatment can prevent complications.

Need expert advice?

You can book a consultation or schedule a heart test through Apollo 24|7 for personalised care.

Conclusion

Third-degree AV block is a serious condition, but with the right treatment (like a pacemaker) and lifestyle changes, most people can lead a normal, healthy life. If you or someone you know has symptoms, don’t delay; seek medical help promptly.

Health Topic Carousel:

Doctor Speciality: General Physician

Text: Consult Top Specialists