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Peer Reviewed| Volume 23, ISSUE 2, P33-35, March 2004

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The application of heliox in the management of croup by an air ambulance service

      Croup is an acute upper respiratory syndrome, typically viral in origin, that usually is seen in children. A subset of the condition named “spasmodic (recurrent) croup” may be an allergic reaction to viral antigens. In either case, the pathology is the same, and the clinical presentations are similar. Croup is characterized by hoarseness, a barky cough, inspiratory stridor, and varying degrees of respiratory distress.
      • Brown JC
      The management of croup.
      Clinical manifestations are a direct result of the inflammation, edema, and consequent narrowing of the tracheal walls, particularly in the subglottic area where the pediatric upper airway is the narrowest. This condition is in effect a fixed airway obstruction.
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