blue spell

An episode of hypoxia, cyanosis, dyspnoea, restlessness and syncope with acutely decreased arterial PO2 and decrease of already compromised pulmonary blood flow, seen in Fallot’s tetralogy, but also in other cyanotic congenital heart malformations

blue spell

Pediatrics An episode of hypoxia, cyanosis, dyspnea, restlessness and syncope with acutely ↓ arterial PO2 and ↓ of already compromised pulmonary blood flow, seen in Fallot's tetralogy, but also in other cyanotic congenital heart malformations. See Shunts–right-to-left.
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References in periodicals archive ?
BLUE SPELL Tony Philliskirk is looking forward to facing his old club.
I write upbeat songs to lift me out of a blue spell.
Over the next few weeks Rebecca's blue spells got even worse and tests showed she had Tetralogy of Fallots.
When he came in, he was dusky and blue and he had suffered from blue spells for probably some time," Bailey said.