Validity of Broselow tape for estimating weight of Indian children
2017
Background & objectives: The Broselow tape has been validated in both ambulatory and simulated emergency situations in the United States and is believed to reduce complications arising from inaccurate drug dosing and equipment sizing in paediatric population. This study was conducted to determine the relationship between the actual weight and weight determined by Broselow tape in the Indian children and to derive an equation for determination of weight based on height in the Indian children. Methods: This cross-sectional study was conducted at a tertiary care hospital in Mumbai, India. The participants' weights were divided into three groups 18 kg with a total sample size estimated to be 210 (70 in each group). Using the tape, the measured weight was compared to Broselow-predicted weight and percentage weight was calculated. Accuracy was defined as agreement on Broselow colour-coded zones, as well as agreement within 10 per cent between the measured and Broselow-predicted weights. The resulting data were compared with weights estimated by advanced paediatric life support (APLS) and updated APLS formulae using Pearson's correlation coefficient. Results: The mean percentage differences were −11.78, −17.09 and −14.27 per cent for 18 kg weight-based groups, respectively. The Broselow colour-coded zone agreement was 33.3 per cent in children weighing 18 kg group. Agreement within 10 per cent was 53.13 per cent for the 18 kg group. Application of 10 per cent weight correction factor improved the percentages to 79.2 per cent for the 18 kg group. The correlation coefficient between actual weight and weights estimated by Broselow tape (r=0.89) was higher than that between actual weight and weight estimated by APLS method or updated APLS formulae (r=0.68) in 12-60 months age group as well as in >60 months age group (r=0.76). Interpretation & conclusions: Broselow weight overestimated weight by >10 per cent in majority of Indian children. The weight overestimation was greater in children belonging to over 18 and 10-18 kg weight groups. Applying 10 per cent weight correction factor to the Broselow-predicted weight may provide a more accurate estimation of actual weight in children attending public hospital. Weights estimated using Broselow tape correlated better with actual weights than those calculated using APLS and updated APLS formulae.
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