The heart of the human body as a dynamic blood pump, to promote systemic blood circulation, to maintain a new array of organ tissue Chen Dai
The heart of the human body as a dynamic blood pump, to promote systemic blood circulation, to maintain a new array of organ tissue Chen Daixie. There are four valves in the heart: aortic valve, mitral valve, pulmonary valve, and three cusps. These valves as a "one-way valve" to guarantee the blood circulation and flow through a certain direction. If the valve due to congenital malformation or acquired rheumatic disease, bacterial infection, will lose the normal anatomic structure and physiological function, stenosis or regurgitation, caused by blood obstruction or reflux, thus affecting the heart blood pump function, hypertrophy of the heart for a long time, "pump failure", a threat to life. Valvular heart disease is early clinical symptoms of palpitations, shortness of breath, susceptible to respiratory tract infection, heart failure edema, paroxysmal dyspnea, hepatomegaly, oliguria, arrhythmia, etc..
Mild congenital valvular disease can be observed, follow-up, early rheumatic valvular disease can also be treated with drugs, once the clinical symptoms, cardiac dysfunction, it should be considered surgery. Valvular surgery, including valve, valve repair and valve replacement. For MR of valve leaflet prolapse was cracked, it degenerative disease or mild rheumatic valvular insufficiency, repair surgery often can successfully reconstruct valve function for severe valvular malformation, or thickening, stiff, or bacterial vegetations, require the removal of valve replacement of artificial valve.
Many of the current clinical application of artificial valve type, mainly divided into two categories: one is the use of artificial materials (such as silica gel, polymer, etc.) made of artificial mechanical valve, the other is made of allogeneic or xenogeneic tissue tissue valve. Mechanical valve durability is good, not easy to failure, but the thromboembolic risk, need long-term medication biovalve without anticoagulation, anticoagulation, thrombosis was low, but prone to degeneration, calcification and failure, so the reoperation rate is high. In short, so far, many domestic and foreign experts continue to study, trying to find out a no thrombosis and not easy to damage the perfect artificial heart valve.