• Precocious pulmonary hypertension in children with Down's syndrome may occur in patients with or without congenital heart disease. Chronic upper airway obstruction, which is common in Down's syndrome, is a well-recognized stimulus of elevated pulmonary artery pressure and may explain the propensity for idiopathic pulmonary hypertension or accelerated pulmonary vascular changes with left-to-right shunts in these children.
(Am J Dis Child 1981;135:1050-1052)
Rowland TW, Nordstrom LG, Bean MS, Burkhardt H. Chronic Upper Airway Obstruction and Pulmonary Hypertension in Down's Syndrome. Am J Dis Child. 1981;135(11):1050-1052. doi:10.1001/archpedi.1981.02130350050016