's general knowledge what is it about of tricuspid stenosis

's general knowledge what is it about of tricuspid stenosis
Tricuspid stenosis (tricuspid stenosis) Cause a area of tricuspid valve to diminish for various reasons. Women meet more.
The most common cause of disease of tricuspid stenosis of the cause of disease is rheumatic fever, about 15% have tricuspid stenosis in the rheumatic heart disease patient, but only 5% of clinical persons who can diagnose clearly. Other inborn tricuspid valve locking, right room tumour and a kind of cancer syndrome that there are the cause of diseases rarely. The clinical feature of the right room tumour is that symptom develops fast; Kind of cancer syndrome is often with the backflow of tricuspid valve at the same time. Rheumatism tricuspid stenosis seldom exists alone, nearly with a pathological change of bicuspid valve, aorta at the same time, mostly the mitral stenosis.
Pathology changes pathology to change and is similar to mitral stenosis, but it is relatively light to damage. It is obvious the chorde tendinae is merged and shortened, the peak of a leaf merges, form a diaphragm one kind of holes. Tricuspid stenosis can amalgamate the tricuspid valve and can not close completely or exist with the damage of any other valves at the same time. The atrium dextrum is obviously expanded, the atrium wall is increased thick, can also present the signs of serious viscera blood stasis such as liver, splenomegaly.
The physiological tricuspid stenosis of pathology, the blood flows into the right room from the right room and is obstructed, present a pressure rank of relaxation badly between atrium dextrum and right ventricle (step one to press) . When or inhale to make the blood flow volume of tricuspid valve increase in sports, step one to press and increase promptly; When exhaling makes the blood flow of tricuspid valve reducing, it can be reduced that the rank of this pressure is bad. If a pressure rank of average relaxation exceeds 0.67kPa( 5mmHg) badly When, can make the average right room press and raise and cause the intravenous extravasated blood of the systemic circulation, showing as the neck vein is full of, hepatomegaly, ascites and edema,etc.. The right ventricle heart arranges blood volume to drop, does not sometimes increase with sports; So the atrium sinistrum was pressed, lung arterial pressure and right ventricle can not obviously rise to press.
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