Obstructive sleep apnea (OSA) with persistent daytime hypoxemia,Arteriovenous (AV) malformations in the lower lobe of the lung

Uncommon cause of persistent hypoxia in a patient with obstructive sleep apnea p. 763
Subodh Kumar Mahto, Pankaj Kumar Gupta, Pritam Majumdar, Gwenette Andrea War, Vishakha Mittal, Atul Goel
DOI:10.4103/jfmpc.jfmpc_3_19 
We report a case of hypothyroidism, obstructive sleep apnea (OSA) with persistent daytime hypoxemia. Cause of hypoxemia was two arteriovenous (AV) malformations in the lower lobe of the lung. We must be alert to other causes of hypoxemia in patients of OSA with persistent daytime hypoxemia.