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Emerg Med J. 2018 Nov 27. pii: emermed-2018-207929. doi: 10.1136/emermed-2018-207929. [Epub ahead of print]

Variability of outcome measures in trials of intravenous therapy in acute severe paediatric asthma: a systematic review.

Author information

1
Emergency Department, Women's and Children's Hospital, University of Adelaide, North Adelaide, South Australia, Australia.
2
Emergency Department, Sidra Medical and Research Center, Doha, Qatar.
3
Emergency Department, Weill Cornell University, Doha, Qatar.
4
School of Medicine, Cardiff University, Cardiff, UK.
5
Emergency Department, Royal Children's Hospital, Melbourne, Victoria, Australia.
6
Murdoch Children's Research Institute, Melbourne, Victoria, Australia.
7
University of Melbourne, Melbourne, Victoria, Australia.
8
Children's Emergency Department, Starship Children's Hospital, Auckland, New Zealand.
9
Monash Emergency Research Collaborative, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia.

Abstract

OBJECTIVE:

To determine the variability of primary and secondary outcomes used in trials of intravenous bronchodilators in children with acute severe paediatric asthma.

METHODS:

Systematic search of MEDLINE, EMBASE, Cochrane CENTRAL and the WHO International Clinical Trials Registry Platform for randomised trials in children (less than18 years) with acute severe paediatric asthma comparing intravenous bronchodilator therapy to another treatment. Initial search was performed on 7 January 2016 with an updated search performed on 6 September 2018. Primary and secondary outcomes were collated.

RESULTS:

We identified 35 published papers and four registered study protocols. 56 primary outcomes were found, the most common being a clinical asthma score (23/56; 41%). Other identified primary outcomes included bedside tests of respiratory function (11/56; 20%) and measures of length of stay (9/56; 16%). There were a total of 60 different secondary outcomes, the most common were various length of stay measures (24/60; 40%) and adverse events (11/60; 18%).

CONCLUSION:

Studies comparing intravenous treatment modalities for children with acute severe paediatric asthma exhibit great variation in the type, number and timing of outcome measures used. There are no patient or family-specific outcomes reported. There is a need to develop international consensus.

TRIAL REGISTRATION NUMBER:

CRD42017055331.

KEYWORDS:

paediatric emergency med; respiratory, asthma

Conflict of interest statement

Competing interests: None declared.

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