Prevention is the first priority in management of hypercyanotic spells. Of primary importance, parents of an infant with tetralogy of Fallot must be educated regarding the condition and, in particular, how to reduce risk of a spell. After the infant awakens in the morning, give a fluid feeding, bathe the infant in tepid water no warmer than body temperature, especially if the home is air conditioned. Throughout the day, especially during hot weather or if the infant is sweating, allow the infant to drink extra fluid as desired. The infant must receive adequate dietary iron. Surgical correction is the definitive method of spell prevention. Open heart surgery can be performed safely in the young infant and should not be delayed.