# Symptoms and stages of heart valve disease
Heart valve disease does not always progress in clear, sequential stages. Many people have no symptoms for years while the disease progresses in the background. Others suddenly notice symptoms. The course depends heavily on which valve is affected, how severe the disease is, and the overall condition of the heart. Below we describe the most common manifestations and how they typically develop.
Stage 1: Without symptoms (asymptomatic)
In this stage the valve does not function properly, but the body does not yet give clear signals of this. The disease is usually discovered by chance during a heart ultrasound or examination for another purpose.
**What happens:**
Many people with aortic stenosis (narrowing of the aortic valve) or mitral insufficiency (leaking mitral valve) have no symptoms for years or even decades. The heart still works well enough to pump blood around, even though the valve does not function perfectly. Only on examination (ultrasound, listening with a stethoscope) is something abnormal audible or visible.
**In daily life:**
You notice nothing. You feel normal, can do your work and continue your activities without problems. The disease is present, but silently present.
**How long this stage lasts:**
This varies enormously. Some people have no symptoms for decades; others develop symptoms within a few years. Examinations show that in aortic stenosis the progression (deterioration) depends on factors such as age, blood pressure and whether someone has type 2 diabetes. When progression is associated with any of these, doctors speak of months to years before symptoms occur, but this is highly individual.
Because you feel nothing, regular follow-up examination is important. Your doctor will determine how often you need an ultrasound or other examination.
Stage 2: Mild to moderate symptoms
In this stage symptoms begin to appear, usually first during exertion or activity.
**Most common complaints: **
- **Shortness of breath** during exertion (climbing stairs, walking at pace, sports)
- **Fatigue** and lack of energy, especially after activity
- **Slight dizziness** or blurred vision during exertion
- **Chest pain** or chest pressure (especially with aortic stenosis and mitral stenosis)
- **Irregular heartbeat** (especially noticeable when sitting still or at night)
- **Swelling** of feet, ankles or legs (especially if the left heart does not pump well)
**In daily life:**
You are less able to exert yourself than before. You notice that you cannot do as much as you used to. Climbing stairs becomes tiring, walking at pace makes you gasp, and it takes you longer to recover. Some people adjust their lives accordingly — working less hard, moving more slowly — without seeking further medical help. But these symptoms are a signal that the valve needs more attention.
**Numbers:**
In aortic stenosis, the phase of moderate symptoms typically lasts several years, but this varies widely. Once symptoms develop, the risk of serious complications increases. Studies show that patients with symptomatic aortic stenosis without treatment have a median survival of approximately 2–3 years (source: traditional cardiac literature; years may differ by population). However, these are population figures; much depends on age, other diseases and heart function.
Stage 3: Severe symptoms and heart failure
In this stage the heart works increasingly poorly and serious symptoms can develop.
**Most common complaints: **
- **Severe shortness of breath** — even at rest, especially when lying down or at night
- **Orthopnea** (difficulty breathing when lying down; you must sit upright)
- **Night sweats** and restless sleep
- **Permanent fatigue** and weakness
- **Swelling** of legs, abdomen and sometimes the entire body (due to fluid buildup)
- **Heart palpitations** (feeling your heart beating hard or irregularly)
- **Severe chest pain**, sometimes radiating to arm or neck
- **Confusion** or concentration problems (due to reduced blood flow to the brain)
- **Syncope** (fainting), especially during exertion
Many of these symptoms occur because the heart can no longer pump properly and fluid accumulates in the lungs and tissues.
**In daily life:**
The condition dominates your life. Normal activities become difficult. You are probably at home a lot, feel sick and worried, and much energy goes towards managing symptoms — taking medication, restricting fluid intake, attending regular check-ups. Sleeping is difficult. You can no longer work or must let work go. Family and friends notice that you have changed.
**What happens medically:**
In this phase your doctor examines how serious the situation is. Echocardiography (heart echo) shows how well the heart still pumps. Sometimes repair or replacement of the valve is offered — via surgery or via a catheter procedure (minimally invasive). This decision depends on your age, overall health and how quickly you are declining.
**Numbers:**
Without intervention (treatment) patients in this phase usually deteriorate rapidly. Historically, the median survival without valve repair in severe symptomatic aortic stenosis was approximately 2–3 years (source: classical cardiology studies). In mitral stenosis this can be longer, depending on severity. These figures are from large groups and say nothing about your personal course. With modern treatments (surgery, catheter procedure, medication) symptoms can improve greatly and life expectancy can increase.
Phase 4: Severe heart failure and complicated condition
In this phase the heart functions very poorly and life-threatening complications can occur.
**Most common complaints and complications:**
- **Acute heart failure** — sudden severe shortness of breath, sometimes with foamy sputum
- **Shock** (extremely low blood pressure, cold skin, confusion) — this is an emergency
- **Acute fluid accumulation in the lungs** (pulmonary oedema) — you cannot breathe
- **Severe heart rhythm disorders**, sometimes life-threatening (for example ventricular fibrillation)
- **Infection of the valve** (endocarditis) — fever, more severe symptoms
- **Blood clots** in the heart, with risk of stroke or organ damage
- **Organ damage** from insufficient blood flow (kidneys, liver)
**In daily life:**
You are very ill. Much daily functioning is impossible. You are probably in hospital or admitted regularly. You need intensive medical care. Family is very worried.
**Medical interventions:**
At this point there is usually urgent need for valve repair or replacement, intensive medication, or sometimes heart support with devices. Without treatment it deteriorates quickly.
**Numbers:**
Patients in this phase without treatment have a very short life expectancy — days to a few weeks. With aggressive medical care and valve repair many patients can stabilize and live months to years longer. The outcome depends greatly on how quickly treatment starts, how old you are, other illnesses and whether the heart already has permanent damage.
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When to contact your doctor
Contact your cardiologist or GP immediately if you experience the following:
- **Sudden** severe shortness of breath, especially at rest or at night
- **Chest pain** that does not go away
- **Fainting** or feeling like you might faint
- **Severe heart palpitations** or irregular beats that do not stop
- **Very swollen feet, legs or belly** — suddenly worse
- **Fever** together with heart complaints
- **Confusion** or great difficulty thinking clearly
In very severe symptoms (impossible to breathe, loss of consciousness, severe pain) you call 112.
Regular contact with your cardiologist is essential. Your doctor wants to know how you are and whether your symptoms change. Seemingly small changes can be important.
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_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._