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Mitral Valve Regurgitation | Mitral Valve Replacement | Mitral Valve Stenosis

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Mitral Valve replacement

Mitral Valve replacement like valve repair is an open-heart procedure where the patient’s diseased mitral valve is removed and replaced by an artificial or prosthetic valve.

There are two main types of prosthetic valves. They are-

Mechanical or metal valves &

Tissue or bioprosthetic valves

Bioprosthetic valves lasts about 10-15 years. These are usually obtained from animals or human organ donors.

Human Valves are referred as Homograft or allograft. Valves from pigs (porcine) or cows (bovine) can be used and are referred as heterograft or Xenograft. Both these valves have a metal wire or stent in the middle and have a similar design. Stentless valves are also present but are hard to implant.

Tissue valves seem to improve the patient’s hemodynamics, but tend to stiffen in 10-15 years and calcify causing a stenotic valve.

An organ donor’s valve is cryopreserved in liquid nitrogen and used when there is a requirement for the valve. Patients’ chances of rejecting the valve are low. It shows good durability and hemodynamics.

Mechanical valves are purely metal and lasts a lifetime. Complications of blood clots and emboli are common in patients with a mechanical valve. So patients take Coumadin or blood thinners all their life.

The most commonly used valve in the United States is a bileaflet valve called as “ST. Jude”. Incidence of thrombosis in this valve is low.

“Starr-Edwards” is a caged ball valve, which has very long durability but high incidences of thromboembolism.

Since 1952, 30 different valves have been used worldwide and the recent one being a bileaflet valve. The bileaflet valve does not close completely and allows back flow of blood to an extent and therefore is not ideally used.

TTK chitra valve is the only Indian made valve. It is a tilting disc valve, durable and highly cost effective.

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Methods for Mitral Valve Repair: Annuloplasty:In annuloplasty an artificial ring is placed around the annulus of the valve.This ring reinforces the annulus and restores the valve to its normal shape and size. Balloon Valvuloplasty:Balloon valvuloplasty is performed using a catheter, i.e. a very thin flexible tube which can be inserted into the body, with a balloon at the end. The balloon is put inside the valve and is expanded thus stretching the valve and bringing it back to its normal size. For more info: heart-consult.com/articles
tjavailable Friday, February 18, 2011
Patients with a biological valve may need replacement valve of 10-15 years. Mechanical valves may also fail, so patients should inform their doctor if they have symptoms of valve insufficiency. Patients with mechanical valves must take blood-thinning medication at the end of their lives. Because these medicines increase the risk of bleeding in the body, you should always be used in medical notification bracelet and the doctor or dentist that you are taking anticoagulant medicine. Even if you take anticoagulant medication, you should always inform your doctor and dentist to have had valve surgery. If you have any surgery or dentistry, you should take antibiotics before the procedure. The bacteria can enter the bloodstream during these procedures. If bacteria enter the repair or artificial heart valves, can lead to a serious condition called bacterial endocarditis. Antibiotics can prevent bacterial endocarditis. http://www.insideheart.com/
syras Tuesday, December 21, 2010
Mitral Regurgitation also known as mitral insufficiency or mitral incompetence is a disorder affecting the mitral valve of the heart. The cusps or flaps of the mitral valve do not seal tightly in this condition and causes a backflow of blood through the mitral valve from the left ventricle to the let atrium of the heart. The heart valve in this state is referred to as a leaky valve. http://www.heart-consult.com
manuheart123 Saturday, December 18, 2010
Various symptoms are
* Shortness of breath.
* Pulmonary edema or fluid accumulation in the lungs.
* Orthopnea or shortness of breath while lying flat.
* Paroxysmal nocturnal dyspnea or Cardiac Asthma
* Decreased exercise tolerance.
* Swollen feet or ankles.

tjavailable Saturday, November 06, 2010

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