Article Text

Download PDFPDF
Delivery of 100%, 40%, and blow-by humidity did not differ for change in croup scores in children with moderate croup

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.

OpenUrlCrossRefPubMedWeb of Science

Q In children presenting to the emergency department (ED) with moderate croup, what is the relative effectiveness of 100% humidity with optimally sized water particles, 40% humidity, and humidity delivered by the blow-by technique?


Embedded ImageDesign:

randomised controlled trial (RCT).

Embedded ImageAllocation:


Embedded ImageBlinding:

blinded (healthcare providers, data collectors, and {data analysts}*).

Embedded ImageFollow up period:

30 and 60 minutes.

Embedded ImageSetting:

ED at the Hospital for Sick Children, Toronto, Ontario, Canada.

Embedded ImagePatients:

140 children 3 months to 10 years of age (mean age 25 mo, 69% boys) who presented with croup and had Westley croup scores ⩾2 out of 17 after a 30 minute rest period. Exclusion criteria were need for immediate nebulised epinephrine or intubation, potential alternative cause of stridor, history of chronic pulmonary disease other than asthma, coexistent systemic disease, previous …

View Full Text


  • * Information provided by author.

  • For correspondence: Dr D Scolnik, Hospital for Sick Children, Toronto, Ontario, Canada. dennis.scolnik{at}

  • Source of funding: Physicians’ Services Incorporated Foundation of Ontario.