Pulmonary valve stenosis

Pulmonary valve stenosis may be related to congenital heart disease, acquired valve degeneration, maternal factors, etc.

1. Congenital heart disease

If there are abnormalities in the fetus 'genes or chromosomes, and there are virus or bacterial infections in the mother during pregnancy, it may cause congenital heart disease in the newborn, resulting in pulmonary valve stenosis.

2. Acquired valve degeneration

If there are calcification and deformation of valve fibers, it may lead to limited valve opening, resulting in pulmonary valve stenosis.

3. Maternal factors

If the mother has rubella during pregnancy, it may lead to toxins remaining in the fetus, resulting in fetal cardiovascular abnormalities, resulting in pulmonary valve stenosis.