Living With Aortic Stenosis

Living with aortic stenosis means managing a condition where your heart's main valve narrows, making it harder for blood to flow to your body. This requires regular medical care, lifestyle adjustments, and potentially treatments like valve replacement to relieve symptoms and improve your heart's function, helping you maintain a good quality of life.

What is Living With Aortic Stenosis?

Aortic stenosis (AS) is a heart condition where the aortic valve, which controls blood flow from your heart to your body, becomes stiff and narrow. Living with AS involves understanding how this narrowing affects your heart's ability to pump blood, managing symptoms, and working closely with your doctor to monitor the condition and explore treatment options to maintain your health.

The aortic valve acts like a one-way door, opening to let oxygen-rich blood leave your heart and flow to the rest of your body, then closing to prevent blood from flowing backward. With aortic stenosis, this valve narrows, making it harder for your heart to push blood through. Imagine trying to push water through a pinched hose; your heart has to work much harder to get blood out. Over time, this increased effort can cause the heart muscle to thicken (hypertrophy). While this initially helps the heart pump more forcefully, it can eventually lead to weakening of the heart muscle and reduced pumping ability. Aortic stenosis is a progressive condition, meaning it often worsens over time, requiring ongoing monitoring and management by a healthcare professional. Living with aortic stenosis means actively participating in your care. This includes attending regular check-ups, following your doctor's recommendations for lifestyle changes, and understanding your treatment options. The goal is to manage symptoms, prevent complications, and improve your overall quality of life.

Symptoms

Aortic stenosis often shows no symptoms in its early stages, but as it worsens, you might experience chest pain, shortness of breath, dizziness, or fainting. These symptoms occur because your heart struggles to pump enough blood through the narrowed valve to meet your body's needs, especially during physical activity.

Many people with aortic stenosis do not experience symptoms until the narrowing of the valve becomes severe. When symptoms do appear, they are often a sign that the heart is struggling to pump enough blood to the body or that the heart muscle is under significant strain. Common symptoms include chest pain (angina), which may feel like pressure or tightness, especially during exertion. You might also experience shortness of breath (dyspnea), particularly when you are active or lying flat. This happens because blood can back up into the lungs. Dizziness or lightheadedness, and even fainting (syncope), can occur when your brain doesn't receive enough blood flow, especially after standing up quickly or during physical activity. Other symptoms can include fatigue, a general feeling of tiredness, and heart palpitations, which are sensations of a rapid, fluttering, or pounding heart. If you notice any of these symptoms, it's important to tell your doctor.

Causes & risk factors

Aortic stenosis is most commonly caused by age-related calcium buildup on the valve, but it can also result from a congenital heart defect or past rheumatic fever. Risk factors like high blood pressure, high cholesterol, and smoking can accelerate the condition's progression, making the valve stiffen and narrow over time.

The most common cause of aortic stenosis, especially in older adults, is the gradual buildup of calcium deposits on the aortic valve leaflets. This calcification makes the valve stiff and less able to open fully, a process that is often associated with aging. Another cause can be a congenital heart defect, meaning you are born with it. The most common congenital cause is a bicuspid aortic valve, where the valve has two leaflets instead of the usual three. This abnormal structure can lead to early calcification and narrowing. Less commonly, aortic stenosis can develop as a complication of rheumatic fever, a serious inflammatory illness that can damage heart valves. While rare in developed countries today, it can still affect people who had rheumatic fever in childhood. Several factors can increase your risk of developing aortic stenosis or speed up its progression. These include older age, high blood pressure (hypertension), high cholesterol, and diabetes. Smoking, chronic kidney disease, and a history of radiation therapy to the chest are also recognized risk factors. Managing these conditions and adopting a healthy lifestyle can help reduce your risk or slow the disease's progression.

How it's diagnosed

Aortic stenosis is often first suspected during a physical exam when a doctor hears a heart murmur, an unusual sound caused by turbulent blood flow. Diagnosis is confirmed and severity assessed using tests like an echocardiogram, which provides detailed images of your heart and valve, along with other imaging and electrical activity tests.

The diagnostic process for aortic stenosis usually begins with a physical exam. Your doctor may listen to your heart with a stethoscope and detect a heart murmur, which is an abnormal whooshing sound caused by blood flowing turbulently through the narrowed valve. They will also check your pulse and blood pressure. The most important test for diagnosing aortic stenosis and determining its severity is an echocardiogram. This is a type of ultrasound that uses sound waves to create moving pictures of your heart, showing the structure and function of your aortic valve, how well your heart is pumping, and the extent of any narrowing. Other tests may include an electrocardiogram (ECG), which records the electrical signals of your heart to check for abnormalities, and a chest X-ray, which can show if your heart is enlarged or if there's fluid in your lungs. Sometimes, a cardiac CT scan or MRI might be used for more detailed images. In some cases, a stress test may be performed if your symptoms are mild, or a cardiac catheterization, which is a more invasive procedure, might be used to measure pressures in your heart and blood vessels directly.

Treatment options

Treatment for aortic stenosis depends on its severity and your symptoms. Mild cases may only require careful monitoring and lifestyle changes, while severe cases usually need intervention to replace the narrowed valve. Options include open-heart surgery (surgical aortic valve replacement) or a less invasive procedure (transcatheter aortic valve replacement), along with medications to manage symptoms.

For mild to moderate aortic stenosis without symptoms, your doctor may recommend a strategy of careful monitoring. This involves regular check-ups and echocardiograms to track the progression of the condition. Lifestyle changes are also important, including adopting a heart-healthy diet, engaging in regular physical activity as advised by your doctor, quitting smoking, and effectively managing conditions like high blood pressure and high cholesterol. Medications cannot fix a narrowed valve, but they can help manage symptoms and related conditions. For example, diuretics might be prescribed to reduce fluid retention and swelling, or medications to control high blood pressure. These treatments help ease the workload on your heart but do not address the underlying valve problem. For severe aortic stenosis, especially when symptoms are present, valve replacement is usually necessary. The primary treatment options are surgical aortic valve replacement (SAVR) or transcatheter aortic valve replacement (TAVR, also known as TAVI). SAVR is an open-heart surgery where the damaged valve is removed and replaced with a mechanical or biological valve. TAVR is a less invasive procedure where a new valve is delivered through a catheter, typically inserted through an artery in the leg, and deployed within the existing valve. TAVR is often preferred for older adults or those with higher surgical risks. In some cases, balloon valvuloplasty, a temporary procedure to widen the valve, may be used, particularly for children or as a bridge to more definitive treatment.

Recovery & outlook

Recovery after aortic valve replacement typically involves a period of rehabilitation and gradual return to normal activities, with the goal of improving heart function and relieving symptoms. The outlook for people with treated severe aortic stenosis is generally good, significantly improving quality of life and life expectancy compared to untreated severe cases.

Recovery after aortic valve replacement, whether SAVR or TAVR, involves a period of healing and rehabilitation. You will receive specific instructions from your medical team regarding activity levels, wound care, and medication. Physical therapy and cardiac rehabilitation programs are often recommended to help you regain strength, improve heart function, and gradually return to your daily activities. It is crucial to follow these guidelines carefully to ensure a smooth recovery. For individuals with severe aortic stenosis, the outlook without treatment is often poor, with a significant risk of serious complications and reduced life expectancy. However, with successful valve replacement, the prognosis improves significantly. Most people experience a marked reduction in symptoms, improved heart function, and a better quality of life. Long-term management involves regular follow-up appointments with your cardiologist to monitor your new valve and overall heart health. You will also need to continue with heart-healthy lifestyle choices and manage any other existing health conditions. Adherence to medication schedules and ongoing communication with your healthcare team are key to maintaining good health after treatment.

When to see a doctor

It is crucial to contact your doctor immediately if you experience new or worsening symptoms of aortic stenosis, such as increased chest pain, severe shortness of breath, or fainting spells. Seek emergency care for sudden, severe symptoms, or if you develop signs of infection like fever and chills after a valve replacement procedure.

If you have been diagnosed with aortic stenosis, it is important to be aware of symptoms that require immediate medical attention. You should contact your doctor right away if you notice any new or worsening symptoms, such as an increase in the frequency or severity of chest pain, shortness of breath that occurs with less activity or even at rest, or more frequent episodes of dizziness or fainting. Signs of heart failure, such as sudden swelling in your ankles, feet, or abdomen, or rapid weight gain due to fluid retention, also warrant prompt medical evaluation. These symptoms indicate that your heart may be struggling more significantly. If you have undergone an aortic valve replacement, it is essential to watch for signs of infection. Seek emergency care if you develop a fever, chills, unusual pain, redness, or discharge around your incision site. Any sudden, severe chest pain, profound shortness of breath, or prolonged fainting should also prompt immediate emergency medical attention.

Frequently asked questions

Can I exercise with aortic stenosis?

The ability to exercise with aortic stenosis depends on its severity and your symptoms. If your aortic stenosis is mild and you have no symptoms, moderate activity might be safe. However, if it's severe or you experience symptoms like chest pain or dizziness, strenuous exercise is usually not recommended. Always discuss your exercise plan with your doctor to ensure it's safe for your specific condition.

What kind of diet should I follow if I have aortic stenosis?

While there isn't a specific "aortic stenosis diet," a heart-healthy eating plan is generally recommended. This includes a diet rich in fruits, vegetables, and whole grains, low in saturated and trans fats, cholesterol, and sodium. Managing conditions like high blood pressure and high cholesterol through diet can help slow the progression of calcification on the valve. Your doctor or a dietitian can provide personalized guidance.

How often do I need check-ups for aortic stenosis?

The frequency of check-ups for aortic stenosis depends on the severity of your condition and whether you have symptoms. If your aortic stenosis is mild and you are asymptomatic, your doctor might recommend annual check-ups. For more severe cases or if you're experiencing symptoms, more frequent monitoring, possibly every 6 months or sooner, may be necessary. Your cardiologist will determine the appropriate schedule.

Is aortic stenosis hereditary?

While most cases of aortic stenosis are related to age-related calcium buildup, some forms can have a genetic component. For example, a bicuspid aortic valve, where you are born with two valve leaflets instead of the usual three, can run in families. If you have a family history of aortic stenosis or bicuspid aortic valve, it's important to discuss this with your doctor.

Can lifestyle changes reverse aortic stenosis?

Lifestyle changes, such as a heart-healthy diet, regular exercise (as advised by your doctor), quitting smoking, and managing conditions like high blood pressure and cholesterol, cannot reverse existing aortic stenosis. However, these changes are crucial for slowing its progression, managing symptoms, and improving overall heart health, which can delay the need for intervention and improve outcomes.

What is the difference between SAVR and TAVR?

Both Surgical Aortic Valve Replacement (SAVR) and Transcatheter Aortic Valve Replacement (TAVR) replace a narrowed aortic valve, but they differ in how they are performed. SAVR is an open-heart surgery where the chest is opened to directly replace the valve. TAVR is a less invasive procedure where a new valve is delivered through a catheter, usually inserted through an artery in the leg, without opening the chest. TAVR is often preferred for older adults or those with higher surgical risks.

Sources

• MedlinePlus — Living With Aortic Stenosis
• Mayo Clinic — Living With Aortic Stenosis
• Cochrane Library — Living With Aortic Stenosis