Have you ever listened to your heart beat? That rhythmic "lub-dub...lub-dub..." sound is made when the little door-like parts inside your heart open and close. We call these doors "valves." So today we are going to talk about the most important of these valves, the "Mitral Valve," which acts like the main gate that gives life to our body. Knowing about this is very important for your health as well as the health of your loved ones.
Simply put, what is the Mitral Valve?
Imagine your heart as a small house with four rooms. Two rooms upstairs and two rooms downstairs. Blood flows between these rooms in exactly one direction. For that to happen, the doors between those rooms have to open and close at just the right time. For example, the mitral valve is the gate between the upper chamber (left atrium) and the lower chamber (left ventricle) on the left side of your heart.
Its main function is to open the door for the oxygenated blood from the lungs to pass from the left atrium to the left ventricle. Then, as the left ventricle pumps blood to the rest of the body, these two doors close tightly to prevent the blood from flowing back into the upper chamber. This process is why every cell in your body gets the oxygen and nutrients it needs.
Simply put, the mitral valve is a very important safety gate that allows blood to flow in only one direction.
How is this valve made?
The mitral valve is a very delicate, yet incredibly strong structure. It has several main parts:
- Leaflets: It has two main leaflets made of thin tissue. These are like the two parts of a door that open and close. One is a little bigger, the other is smaller. These two leaflets open and close with each beat of the heart.
- Chordae Tendineae: Like the cords of a parachute, these two leaflets are attached to the lower muscles of the heart by a network of very strong, thin cords. These are what we call ``(Chordae Tendineae)``. Without these cords, the leaflets of the valve could fall back uncontrollably.
- Papillary Muscles: These cords are held together by two small muscle columns in the heart wall. Together, these muscles and cords control the movement of the valve leaflets.
- Annulus: The two leaflets of the valve are attached to a strong D-shaped ring of tissue. This is what gives the valve its stable shape.
It's because all of these things work together and coordinate in an amazing way that the blood flow in your heart is smooth.
What are the common conditions that affect the mitral valve?
Sometimes, for various reasons, the mitral valve can become dysfunctional. Then your heart has to work harder than usual to pump the amount of blood your body needs. Let's take a look at what these conditions are.
| Condition name | Simply put, this is what happens. |
|---|---|
| Mitral Valve Prolapse | When the valve closes, its two leaflets do not close properly, and they slide slightly toward the upper chamber (left atrium). It's like a door that doesn't close properly in the wind. Over time, this can cause blood to leak from the valve. |
| Mitral Valve Regurgitation | Because the valve doesn't close properly, when blood is pumped from the lower chamber (the left ventricle), some of it leaks back into the upper chamber. This is like water leaking from a leaky pipe. |
| Mitral Valve Stenosis | The valve flaps become thick and stiff, and do not open properly. Like a rusty doorknob. This prevents enough blood from flowing from the upper chamber to the lower chamber. |
| Double-orifice Mitral Valve | This is a congenital structural defect. Instead of one opening in the valve, two openings are created. One or both of these openings can become narrow or leak. |
Why do things like this happen?
You're probably wondering, "Why is this happening to these valves?" There could be several reasons for this.
- Aging: As we age, like other parts of our body, the heart valves can gradually weaken and become thickened with calcium deposits.
- Congenital defects: Some people may be born with a congenital valve defect.
- Damage caused by a heart attack: When a heart attack damages the heart muscle, it can also affect the function of the valve.
- Infections and allergies: Conditions such as rheumatic fever, which occurs after untreated throat infections, and infections affecting the inner lining of the heart, such as endocarditis, can damage the valves.
- Other medical conditions: Genetic diseases that affect the body's connective tissues, such as Marfan Syndrome, can also cause valve weakness.
- Radiation therapy: If you received radiation therapy for cancer in the chest area as a child, it may also affect the valves in the future.
How do you know if there is a problem with the valve? What are the symptoms?
In many cases, there may be no symptoms for years even if there is a problem with the mitral valve. However, as the condition gradually worsens, symptoms begin to appear.
| Common symptoms | |
|---|---|
| An abnormal heart sound (Heart Murmur) | An abnormal sound heard by a doctor with a stethoscope. This is often the first sign of valve disease. |
| Difficulty breathing (Dyspnea) | Difficulty breathing, especially when you are tired, when climbing stairs, or when you are leaning. |
| Fatigue | Feeling extremely tired for no reason. |
| Dizziness or fainting | Sudden dizziness or loss of consciousness. |
| Chest pain | Feeling of tightness or pain in the chest. |
| Palpitations | Feeling like your heart is beating fast, pounding, or changing rhythm. |
If you have one or more of these symptoms, don't ignore them. It could be normal, but it's best to see a doctor to make sure.
What happens if these situations become serious?
If valve diseases are not treated properly, they can cause serious complications that can even be life-threatening .
- Heart rhythm disorders `(Arrhythmia)`
- Fluid filling the lungs
- Heart Failure
- Pulmonary Hypertension
- Stroke
- Cardiac Arrest
So, if you experience these symptoms, see your doctor as soon as possible. He or she will run the necessary tests and tell you exactly whether you have a problem or not.
What tests check the health of the mitral valve?
Your doctor will ask about your symptoms, examine you, and, if necessary, refer you for several tests like this.
- Auscultation: This is the most basic test. The doctor can hear your heart beating to check for any abnormalities, such as a heart murmur.
- Echocardiogram: This is a scan that takes a video of the heart. It can clearly see the shape of the valve, its movement, and whether it is leaking blood or narrowing.
- Electrocardiogram (EKG): A test that records the electrical activity of the heart. This helps detect changes in heart rhythm.
- Exercise Stress Test: An EKG and blood pressure are monitored while you walk or run on a treadmill. This helps to see how your heart is affected by exertion.
- Chest X-ray: This can be used to check for an enlarged heart and fluid in the lungs.
- Other scans: Sometimes tests such as a `(CT)` scan or `(Heart MRI)` may also be needed.
- Cardiac Catheterization: A thin tube is passed through a vein in the arm or leg into the heart to measure the pressure inside the heart and check its function.
What are the treatments?
If you are diagnosed with mitral valve disease, don't panic. Today, there are very effective treatments for this. Your doctor will determine the best treatment based on the severity of your condition.
- Medications: Various medications are given to control symptoms and prevent complications. For example, diuretics, which remove excess water from the body, medications to control blood pressure, and medications to correct heart rhythm.
- Surgery and other methods:
- Mitral Valve Repair: Whenever possible, doctors will try to repair and fix your own valve. This is the best option.
- Mitral Valve Replacement: If the valve is damaged beyond repair, it is removed and replaced with an artificial valve (made of metal or animal tissue).
- Balloon procedure (Mitral Valve Commissurotomy): In cases where the valve is narrowed (stenosis), a balloon is passed through a vein to open the narrowed valve.
Nowadays, technology has advanced so that many of these surgeries can be performed through very small incisions, without completely opening the chest. Therefore, recovery is faster.
What can we do to keep our heart valves healthy?
Although we cannot prevent some valve diseases, we can maintain the overall health of the heart by following a healthy lifestyle.
- Avoid smoking completely.
- Limit alcohol and caffeine use.
- Manage stress. Things like meditation and yoga can help.
- Keep your teeth and skin clean. Infections that enter the body through these can affect the heart.
- Control blood pressure and cholesterol levels.
- Eat a heart-healthy diet. Choose foods low in saturated and trans fats.
- Stay active most days of the week. Do some exercise, such as walking, for at least 30 minutes a day.
Take-Home Message
- The mitral valve is a small gate in your heart that is essential to life.
- Don't ignore symptoms like shortness of breath, extreme fatigue, chest pain, or palpitations.
- If you have a valve disease, follow your doctor's instructions exactly and attend clinics on time.
- Don't worry! Today, there are very effective and safe treatments for mitral valve disease.
- A healthy lifestyle is the best gift you can give your heart.
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