Air in the ductus.
D004373:Ductus Arteriosus / Q000503:physiopathology*; D004618:Embolism, Air / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000209:etiology / Q000503:physiopathology*