Heart Valve replacement�is a surgery procedure in which a one or more of the patient's heart valve is replaced by a different valve. The valves control the direction of blood flow through your heart. The opening and closing of the heart valves produce the sound of heartbeat.

There are�four valves�in a human heart:

• Aortic valve
• Mitral valve
• Tricuspid valve
• Pulmonary valve

Causes

The heart valve can be affected by a range of diseases; the valve can either become leaky or partially blocked. Heart valve surgery may be recommended if there is a narrowing of the heart valve (stenosis) or leaking of the heart valve (regurgitation).

These problems could be because of birth defects, Congenital, which most often affects the Aortic or Pulmonic valve. Valves may be the wrong size, have malformed leaflets, or have leaflets that are not attached to the annulus correctly.

Bicuspid aortic valve disease�is a congenital valve disease that affects the aortic valve. Instead of the normal three leaflets or cusps, the bicuspid aortic valve has only two. Without the third leaflet, the valve may be stiff (unable to open or close properly) or leaky (not able close tightly).

The structure or your valve can change due to a variety of diseases or infections, including rheumatic fever which is caused by an untreated bacterial infection or�Endocarditis�when germs, especially bacteria, enter the bloodstream and attack the heart valves, causing growths and holes in the valves and scarring.

Symptoms

• Shortness of breath and/or difficulty catching your breath. You may notice this most when you are active (doing your normal daily activities) or when you lie down flat in bed. You may need to sleep propped up on a few pillows to breathe easier
• Weakness or dizziness. You may feel too weak to carry out your normal daily activities. Dizziness can also occur, and in some cases, passing out may be a symptom
• Discomfort in your chest. You may feel a pressure or weight in your chest with activity or when going out in cold air
• Palpitations. This may feel like a rapid heart rhythm, irregular heartbeat, skipped beats or a flip-flop feeling in your chest
• Swelling of your ankles, feet or abdomen. This is called edema. Swelling may occur in your belly, which may cause you to feel bloated
• Rapid weight gain. A weight gain of two or three pounds in one day is possible

There are two types of valves that are used namely Mechanical valves and Tissue valves

Diagnosis

The following tests may be used to conclude and diagnose�valve diseases

* Echocardiography
* Transesophageal echocardiography
* Cardiac catheterization (also called an angiogram)
* Radionuclide scans
* Magnetic resonance imaging (MRI)

During a physical examination the doctor will listen to your heart to hear the sounds the heart makes as the valves open and close. A murmur is a swishing sound made by blood flowing through a stenotic or leaky valve.

There are different types of valves that can be used

Mechanical valves

Mechanical valves are designed to outlast the patient, and have typically been stress-tested to last several hundred years. Although mechanical valves are long-lasting and generally only one surgery is needed, there is an increased risk of blood clots forming with mechanical valves. As a result, mechanical valve recipients must generally take anti-coagulant drugs such as Warfarin for the rest of their lives, which makes the patient more prone to bleeding.

Tissue valves

Tissue heart valves are usually made from animal tissues, either animal heart valve tissue or animal pericardial tissue. The tissue is treated to prevent rejection and calcification.

There are alternatives to animal tissue valves. In some cases a�homograft�- a human aortic valve - can be implanted. Homograft valves are donated by patients and harvested after the patient dies. The durability of homograft valves is probably the same for porcine tissue valves. Another procedure for aortic valve replacement is the Ross procedure. In a Ross procedure, the aortic valve is removed and replaced with the patient's own pulmonary valve. A pulmonary homograft (pulmonary valve taken from a cadaver)is then used to replace the patient's own pulmonary valve. This procedure was first used in 1967 and is used primarily in children

Homograft

A homograft or allograft is a human valve obtained from a donor. This type of valve is particularly beneficial for pregnant women and children, because it does not require long-term anticoagulation therapy. In addition, it can provide excellent hemodynamic performance, allowing for natural function of the surrounding structures. Because the availability of these valves depends on donors, supply is limited.

Valves can be repaired or replaced with traditional heart valve surgery or a minimally invasive heart valve surgical procedure. Heart valves may also be repaired by other procedures such as�percutaneous balloon valvotomy.

General anesthesia is used for this procedure. The surgeon then will make an incision down the center of the chest, separating the breastbone in order to gain access to your heart. In order to operate on the heart, it must be still. To accomplish this, the heart-lung machine is used to take over the job of the heart and the lungs. A special tube is placed in your right atrium. This tube carries blood from the body to the machine, which oxygenates the blood. The machine then pumps the oxygenated blood through another tube that has been placed into the aorta to circulate the blood back through the body. The term bypass is often used to describe this method of bypassing the heart and lungs.

The surgeon then makes another incision in the heart or aorta and removes the damaged valve. The new replacement valve is properly positioned and sewn into place. The incisions in the heart are then closed (sewn); the heart-lung machine is withdrawn; and the heart is started again to circulate blood through the lungs and body. The breastbone is rejoined with wires and the incision closed.

The procedure outlined here is a conventional, open-chest procedure for valve replacement surgery. Recent technology has allowed surgeons to perform�valve replacement�or repair with less invasive techniques. This is not always an option and depends on whether the facility has the technology available. In some cases, the specific nature of the repair needed cannot be performed using the less invasive technology, and conventional surgery is required. The less invasive approach will most likely involve a shorter procedure time, reduced hospital stay, and quicker recovery.

The other Major Cardiac Procedures are:

• Coronary Angioplasty
• VSD (Ventricular Septal Defect Closures) Closures�.. etc

Few Major Hospitals for Heart Valve Replacement are:

• Narayana Hrudayalaya
• Asian Heart Institute and research center
• Piyavate Hospital
• Florence Nightingale Hospital

Thailand,�Malaysia, Singapore, Turkey�and�India�are the most cost effective locations that offer up to almost 80% savings in comparison to the US.

SurgeryPlanet�facilitates a plethora of services to the medical treatment traveler also which includes, a hassle free and discounted travel option, a welcome hand at the airport on arrival, travel in an air-conditioned car, round the clock service & support. Your medical evaluation is pre arranged with the least of waiting time. Once your assessment is complete and found medically fit, the procedure is immediately scheduled without a waiting period. Please read through our Services and Testimonials to understand and select your best options.

• Thailand
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