RT Journal Article SR Electronic T1 Reversible pulmonary hypertension post adenotonsillectomy JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1582 OP 1584 VO 27 IS 10 A1 Al-Saadi, Muslim M. YR 2006 UL http://smj.org.sa/content/27/10/1582.abstract AB An 18-month-old boy presented with signs and symptoms of obstructive sleep apnea and pulmonary hypertension of 12 months duration. Confirmatory laboratory studies, in the form of echocardiography and overnight oximetry, were carried out, which showed hypoxemia and severe pulmonary hypertension. He had adenotonsillectomy, which resulted in complete resolution of signs and symptoms of pulmonary hypertension. Chronic upper airway obstruction should not be overlooked as it is a reversible cause of pulmonary hypertension.