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Validation of weight estimation by age and length based methods in the Western Cape, South Africa population

Heike Geduld1, Peter W Hodkinson, Lee A Wallis

  • 1Division of Emergency Medicine, University of Cape Town and Stellenbosch, Cape Town, South Africa.

Emergency Medicine Journal : EMJ
|October 15, 2010
PubMed

Insights

The Broselow tape and Advanced Paediatric Life Support (APLS) formula are most accurate for estimating paediatric weight in South Africa. Clinicians should use these methods alongside clinical judgment, especially in emergencies.

Area of Science:

  • Paediatric Emergency Medicine
  • Clinical Assessment Tools

Background:

  • Accurate paediatric weight estimation is critical for drug dosing and fluid management in emergencies.
  • Existing weight estimation methods vary in accuracy across different populations.

Purpose of the Study:

  • To compare the accuracy of four common paediatric weight estimation methods: APLS formula, Luscombe and Owens formula, Best Guess method, and Broselow tape.
  • To identify the most reliable method for estimating weight in South African children.

Main Methods:

  • A retrospective analysis of 2832 children aged 1-10 years treated at Red Cross Hospital, Cape Town.
  • Comparison of measured weights against estimated weights from the four methods.

Main Results:

  • The Broselow tape and APLS formula demonstrated the highest correlation with measured weights.
  • Mean errors were 0.9% for the Broselow tape and 3.3% for the APLS formula.
  • The Best Guess and Luscombe and Owens methods tended to overestimate weight significantly (15.4% and 12.4% respectively).

Conclusions:

  • The Broselow tape and APLS formula are the most accurate weight estimation tools for the Western Cape paediatric population.
  • While generally accurate, these methods may slightly underestimate weight; clinical judgment remains essential.
  • In emergency situations, clinicians should prioritize using these validated methods and obtain measured weights whenever feasible.
Abstract

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