Aortic Valve Disease

Aortic valve disease refers to conditions affecting the valve between the heart’s left lower chamber (left ventricle) and the aorta, the body’s largest artery. This valve ensures blood flows in the right direction. A diseased aortic valve can disrupt blood flow, affecting the heart and other organs.

Types of Aortic Valve Disease

1. Aortic Valve Stenosis
   • Occurs when the valve flaps (cusps) become thickened, stiff, or fused, narrowing the valve opening.
   • Results in restricted blood flow from the heart to the body.
2. Aortic Valve Regurgitation
   • Occurs when the valve doesn’t close properly, allowing blood to flow backward into the left ventricle.

Symptoms

Many people with aortic valve disease may remain asymptomatic for years. When symptoms appear, they can include:

• Chest pain or tightness.
• Dizziness or fainting.
• Fatigue after activity.
• Shortness of breath, especially during activity or when lying down.
• Irregular heartbeat or sensations of a pounding heart.
• Swollen ankles or feet, indicative of heart failure in severe cases.
• In children with aortic valve stenosis:
  • Poor appetite.
  • Failure to gain weight.

When to See a Doctor

Seek immediate medical attention for:

• Sudden chest pain.
• Symptoms of heart failure, such as persistent fatigue, shortness of breath, and swelling in the ankles or feet.

Make an appointment if you notice signs such as shortness of breath, fatigue during physical activity, or irregular heartbeats.

Causes

Aortic valve disease can be congenital (present at birth) or acquired later in life. Common causes include:

1. Age-Related Changes:
   • Calcium buildup on the valve can stiffen and narrow it over time.
2. Congenital Heart Defects:
   • Missing, extra, or fused valve flaps increase the risk of valve dysfunction.
3. Infections:
   • Rheumatic fever can result in rheumatic heart disease, leading to valve stenosis.
   • Endocarditis, an infection of the heart’s lining, can damage the valve.
4. Other Causes:
   • High blood pressure.
   • Chest injury.
   • Chronic conditions like kidney disease, lupus, or connective tissue disorders (e.g., Marfan syndrome).

Risk Factors

• Older age: Increases risk due to calcium deposits.
• Congenital defects: Structural abnormalities from birth.
• Rheumatic fever: A past complication of untreated strep throat.
• Radiation therapy: Previous treatment for cancers in the chest.
• Chronic illnesses: Conditions like lupus or kidney disease.

Complications

If untreated, aortic valve disease can lead to serious complications:

• Blood clots.
• Stroke.
• Heart failure.
• Arrhythmias (irregular heart rhythms).
• Sudden cardiac death.

Diagnosis

To diagnose aortic valve disease, your doctor may recommend:

1. Imaging Tests:
   • Echocardiogram: Evaluates valve structure and function.
   • Chest X-ray: Checks for heart enlargement or fluid in the lungs.
   • MRI or CT scans: Provide detailed images of the heart and aorta.
2. Electrocardiogram (ECG): Detects heart rhythm abnormalities.
3. Cardiac Catheterization: Measures pressure and blood flow in the heart.

Treatment

Medications

• To manage symptoms or prevent complications, such as:
  • Blood pressure medications (e.g., beta blockers).
  • Diuretics to reduce fluid buildup.

Surgical and Interventional Options

1. Valve Repair:
   • Preferred for some cases of valve regurgitation.
2. Valve Replacement:
   • Indicated for severe valve stenosis or regurgitation.
   • Types of replacement valves:
     • Mechanical valves: Long-lasting but require lifelong blood thinners.
     • Biological valves: Made from animal or human tissue; may need replacement over time.
3. Transcatheter Aortic Valve Replacement (TAVR):
   • A minimally invasive option for high-risk patients.

Prevention

While some causes of aortic valve disease can’t be prevented, the following steps can reduce the risk:

1. Manage Chronic Conditions:
   • Control high blood pressure and cholesterol.
2. Prevent Infections:
   • Take antibiotics as prescribed for conditions like strep throat to prevent rheumatic fever.
3. Heart-Healthy Lifestyle:
   • Avoid smoking.
   • Eat a balanced diet low in salt and rich in fruits and vegetables.
   • Exercise regularly.
4. Regular Monitoring:
   • For congenital heart defects or a history of rheumatic fever, routine follow-up with a cardiologist is essential.

Outlook

With timely diagnosis and appropriate treatment, many people with aortic valve disease can lead normal, active lives. However, ongoing care and lifestyle changes are crucial to prevent complications and maintain heart health.