Tricuspid atresia occurs frequency of 1-3% of all congenital tricuspid valve serdtsa.Atreziya third in frequency among the "blue" heart defects after tetralogy of Fallot and transposition of great arteries. In this case there is no vice post between the right atrium and right ventricle. He was always accompanied by atrial septal defect, left ventricular enlargement and reduced right ventricular size, its underdevelopment. All the venous blood through the hole in the right atrium enters the left atrium. If the hole atrial septum small, right atrial pressure increases and it expands and gets larger. Atrial muscle is thin and weak so blood accumulates in the right atrium and large veins that bring blood from the body. There is a venous stasis. The left atrial venous and arterial blood is mixed. Blood is carried throughout the body with insufficient oxygen enrichment, so the color of the skin of patients has bluish tint. Cardiac pump function performs a left ventricle. The manifestations of defect depends on the degree of pressure in the pulmonary artery.
The classification includes three types of defect, depending on the position of the great vessels (aorta and pulmonary trunk). The presence of stenosis (narrowing of the pulmonary artery) - with or without stenosis, pulmonary artery stenosis. Babies with this defect have a bluish color of skin, which increases with crying, sucking. Over the age of cyanosis (blueness) increases. There are bouts of unconsciousness with blueness of the lips, ears. Develop symptoms - "drumsticks" and "hour-glass" in the blood increases the number of red blood cells and other blood cells. Patients are lagging behind in physical development. During exercise they have a shortness of breath. Gradually developing heart nedostatochnost.Pri absence of surgical treatment, most children die in their first year of life, although there are cases where patients lived to 30 and even 60 years.
Tricuspid atresia valve - Diagnosis
For the diagnosis of tricuspid atresia valve has a value of listening systolic murmur along the left sternal border. Sometimes the noise is heard in systole and diastole. Suspect that heart disease can have on the electrocardiogram. His sign is the increase of the left ventricle in a patient with cyanosis (blueness). On radiographs are changes in the lungs. Angiography contrast medium injected into the right atrium and watch the movement of contrasted blood into the left atrium (normally in the right ventricle) and then into the aorta and pulmonary artery. In the region of the right ventricle of the heart is "light triangle".
Tricuspid atresia valve - Treatment
If the baby's grave can be made immediate surgery. There are various methods of surgical treatment. More often produce immediate expansion of output from the right atrium. If the child's condition is satisfactory operation may be delayed up to 6-12 months. Mortality in the surgical treatment of 2 to 20%. The results of surgery depend on the anatomical features of the defect and the condition of pulmonary blood flow.