Hypercyanotic attacks in Fallot's tetralogy.
D002648:Child; D002675:Child, Preschool; D003490:Cyanosis / Q000209:etiology*; D004418:Dyspnea, Paroxysmal / Q000209:etiology*; D006801:Humans; D000860:Hypoxia / Q000209:etiology*; D013771:Tetralogy of Fallot / Q000150:complications*