Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
blue spellPediatrics 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.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.