Pathologic _'s general knowledge of cause of disease of tricuspid stenosis

Pathologic _'s general knowledge of cause of disease of tricuspid stenosis
Cause of disease of disease
The most common cause of disease is wind worry. Pathology changes and is similar to mitral stenosis, but it is relatively light to damage. The persons who exist alone of tricuspid stenosis are extremely rare, often accompany and close complete, bicuspid valve and a damage of aorta. Corpse examine the intersection of wind and worry 15% have tricuspid stenosis, but clinical diagnosis person only 5%. Women meet more, the other rare causes of disease have locking and a kind of cancer syndrome of inborn tricuspid valve,etc..
Pathologic change
Tricuspid stenosis make atrium dextrum and appear the intersection of relaxation and issues of steps poor pressure between the right ventricle. As sport or inhale, make the intersection of tricuspid valve and blood flow volume increase, relaxation issues of right room and pressure steps between the right room increase badly promptly; When exhaling and making the blood flow of tricuspid valve reduce, it can be reduced that the rank of this pressure is bad. If a pressure rank of average relaxation exceeds 053kPa( 4mmHg) badly When, can make the average right room press and raise and cause intravenous extravasated blood of the body, showing as the neck vein is full of, hepatomegaly, ascites and edema,etc.. The atrium dextrum a wave extremely increases, can reach the level of the systolic pressure of right ventricle at the time of sinus rhythm of the heart. The quiet interest heart arranges blood volume to drop, has not also increased at the time of sports; So the atrium sinistrum was pressed, lung arterial pressure and right ventricle can not obviously rise to press.
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