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CORKSCREW 2013 CORK study of children's realistic estimation of weight
Darko Skrobo1, Gemma Kelleher1
1Emergency Department, Cork University Hospital, Cork, Ireland.
Insights
The Luskin and Owens (LO) formula accurately estimates paediatric weights, significantly outperforming the APLS formula in a large Irish study. This improved accuracy is crucial for effective resuscitation in children.
Area of Science:
- Paediatric emergency medicine
- Clinical pharmacology
- Biostatistics
Background:
- Accurate weight estimation is critical for paediatric resuscitation and management.
- The APLS formula ('2×(age+4)') is widely used but its accuracy is questioned due to rising childhood obesity.
- The Luscombe and Owens (LO) formula ('(3×age)+7') is a proposed alternative for weight estimation.
Purpose of the Study:
- To collect weight and age data for children (1-15 years) at Cork University Hospital (CUH).
- To compare the diagnostic accuracy of the APLS and LO weight estimation formulae in this population.
Main Methods:
- Retrospective data collection from patient charts at CUH, Ireland's sole level one trauma centre.
- Inclusion of 3155 children aged 1-15 years (1344 girls, 1811 boys).
- Analysis of weight underestimation by both the APLS and LO formulae.
Main Results:
- The APLS formula underestimated children's weights by a mean of 20.3% (95% CI 19.7%–20.9%).
- The LO formula demonstrated a significantly lower mean underestimation of 4.0% (95% CI 3.3%–4.6%).
Conclusions:
- The LO formula is a more accurate age-based weight estimation tool for Irish children aged 1-15 years.
- This study validates the LO formula as a simple, safe, and superior alternative to the APLS formula in a paediatric emergency setting.
- The findings support the adoption of the LO formula for improved clinical decision-making in paediatric resuscitation.
Background:
In a resuscitation situation involving a child (age 1-15 years) it is crucial to obtain a weight as most interventions and management depend on it. The APLS formula, '2×(age+4)', is taught via the APLS course and is widely used in Irish hospitals. As the prevalence of obesity is increasing the accuracy of the formula has been questioned and a newer formula has been suggested, the Luscombe and Owens (LO) formula, '(3×age)+7'.
Aims And Objectives:
To gather data on the weights and ages of the Cork paediatric population (ages 1-15 years) attending services at the Cork University Hospital (CUH), and to identify which of the two age-based weight estimation formulae has best diagnostic accuracy.
Setting:
CUH, Ireland's only level one trauma centre.
Methods:
Retrospective data collection from charts in the Emergency Department, Paediatric Assessment Unit and the Paediatric wards of CUH.
Results:
3155 children aged 1-15 years were included in the study. There were 1344 girls and 1811 boys. The formula weight='2×(age+4)' underestimated children's weights by a mean of 20.3% (95% CI 19.7% to 20.9%) for the ages of 1-15 years. The LO formula weight='(3×age)+7' showed a mean underestimation of 4.0% (95% CI 3.3% to 4.6%) for the same age range.
Conclusions:
The LO formula has been validated in several studies and proven to be a superior age-based weight estimation formula in many western emergency departments. This study shows that the LO formula leads to less underestimation of weights in Irish children than the APLS formula. It is a simple, safe and more accurate age-based estimation formula that can be used over a large age range (1-15 years).
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