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From 2011, Advanced Paediatric Life Support (APLS) candidates learn three formulae for paediatric weight estimation,1 covering infants from 1 to 12 months (0.5×age in months +4), children aged 1–5 years (2×age in years +8) and children aged 6–12 years (3×age in years +7). Previously, one formula was taught for ages 1–10 years ((age in years+4)×2)) and is still used in the European Paediatric Life Support course (EPLS); this formula is equivalent to the current APLS formula for 1–5 years.
We note some colleagues say they have difficulty recalling the new APLS formulae and age ranges for children over 1 year of age. To gauge the extent of this difficulty, we conducted a survey of 25 UK paediatric trainees (ST1–ST3) at …