TITLE

Weight estimation in resuscitation: is the current formula still valid?

AUTHOR(S)
Luscombe, Mark; Owens, Ben
PUB. DATE
May 2007
SOURCE
Archives of Disease in Childhood;May2007, Vol. 92 Issue 5, p412
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Objectives: To gather data on the ages and weights of paediatric patients between 1 and 10 years of age, and to compare these data with the current weight estimation formula weight(kg) = 2(age+4). If a significant difference was found, the data would be used to derive a more accurate formula. Design: Retrospective study using data collected from paediatric attendances at an emergency department (ED). Setting: A large ED in a major UK city, treating both children and adults. Patients: 17 244 children aged 1-10 years, attending the ED between June and December 2005. Main outcome measures: Weight difference between the measured weight and the expected weight, the latter given by weight= 2(age+4). Results: The weights of seriously ill children were recorded in only 41 .5% of cases, necessitating a weight estimate in the remainder. The formula weight = 2(age-i-4) underestimated children's weights by a mean of 18.8% (95% confidence interval (95% CI) 18.42% to 19.18%). Using linear regression and analysis of each individual age group, ten new formulas were tested, Of these formulas, weight(kg) = 3(age)+7 proved the most accurate with a mean underestimate of lust 2.48% (95% CI 2.17% to 2.79%). Conclusions: Weight estimation remains of paramount importance in paediatric resuscitation. This study shows that the current estimation formula provides a significant underestimate of children's weights. When used to calculate drug and fluid dosages, this may lead to the under-resuscitation of a critically ill child. The formula weight(kg) = 3(age)+7 provided a safe and more accurate estimate of the weight of today's child.
ACCESSION #
25374012

 

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