Our aim was to investigate effects of chronic hypoxia on endocrine function in pediatric patients with cyanotic congenital heart disease (CHD). Thirty patients with cyanotic CHD (16 boys, 14 girls), and 35 control subjects (22 boys, 13 girls) were enrolled. Age means of patients and controls were 4.37±4.51 and 4.28±4.96 years, respectively. Standard deviation scores (SDS) of height and weight w...