Estimating children's weight in a Rwandan emergency centre

Area of Science:

• Pediatric Emergency Medicine
• Clinical Pharmacology
• Biostatistics

Background:

• Accurate pediatric weight estimation is vital for drug dosages, fluid administration, and ventilator settings.
• Weight measurement is often impractical in emergency situations.
• Existing estimation methods, primarily age or height-based, vary in accuracy.

Purpose of the Study:

• To compare the accuracy of various pediatric weight estimation methods in Rwanda.
• To develop a new, localized age-based weight estimation tool for Rwandan children.

Main Methods:

• Retrospective study of 327 Rwandan children (1-10 years) at Centre Hospitalier Universitaire de Kigali.
• Weight estimation using four Broselow Tape versions and age-based formulas.
• Development of the 'Rwanda Rule' formula and comparison via Bland-Altman analysis.

Main Results:

• The derived 'Rwanda Rule' (weight = [1.7 × age] + 8) and the Advanced Paediatric Life Support formula showed similar accuracy.
• Both formulas were more accurate than other age-based methods (69% within 20% of actual weight).
• The 1998 Broselow Tape demonstrated the highest accuracy (84.8% within 20% of actual weight).

Conclusions:

• This study provides the first comparison of pediatric weight estimation methods in Rwanda.
• The 1998 Broselow Tape is recommended for children aged 1-10 years in this setting.
• The Advanced Paediatric Life Support formula is a viable alternative if the Broselow Tape is unavailable.