Relation between endothelial nitric oxide synthase genetic polymorphisms and pulmonary arterial hypertension in newborns with congenital heart disease

To investigate whether endothelial nitric oxide synthase (Genotyping for theThe genotype and allele frequency distributions ofThe T allele could be a risk factor for PAH in newborns with CHD in South Fujian through decreased levels of nitric oxide production by the endothelium.