• Ann Emerg Med · Oct 2013

    Multicenter Study Clinical Trial

    Evaluation of the Mercy TAPE: Performance Against the Standard for Pediatric Weight Estimation.

    • Susan M Abdel-Rahman, Ian M Paul, Laura P James, Andrew Lewandowski, and Best Pharmaceuticals for Children Act-Pediatric Trials Network.
    • Division of Clinical Pharmacology and Medical Toxicology, Children's Mercy Hospitals and Clinics, Kansas City, MO, and the Department of Pediatrics, University of Missouri-Kansas City, School of Medicine, Kansas City, MO. Electronic address: srahman@cmh.edu.
    • Ann Emerg Med. 2013 Oct 1; 62 (4): 332339.e6332-339.e6.

    Study ObjectiveWe assessed the performance of 2 new devices (2D- and 3D-Mercy TAPE) to implement the Mercy Method for pediatric weight estimation and contrasted their accuracy with the Broselow method.MethodsWe enrolled children aged 2 months through 16 years in this prospective, multicenter, observational study. Height/length, weight, humeral length, and mid-upper arm circumference were obtained for each child, using calibrated scales and measures. We then made measurements with blinded versions of the 2D- and 3D-TAPEs. Using height/length data, we calculated the weight estimated by the Broselow method. We contrasted measures with mean error, mean percentage error, and percentage predicted within 10% and 20% of actual.ResultsSix hundred twenty-four participants (median 8.5 years, 27.6 kg, 17.3 kg/m(2)) completed the study. Mean error was 0.3 kg (mean percentage error 1.6%), 0.2 kg (mean percentage error 1.9%), and -1.3 kg (mean percentage error -4.1%) for 2D-, 3D-, and Broselow, respectively. Concordance between both TAPE devices and the Mercy Method was greater than 0.99. The proportion of children predicted within 10% and 20% of actual weight was 76% and 98% for the 2D-TAPE and 65% and 93% for the 3D-TAPE. Excluding the 209 (33%) children who were too tall for the device, Broselow predictions were within 10% and 20% of actual weight in 59% and 91%.ConclusionThe 2D- and 3D-Mercy TAPEs outperform the Broselow tape for pediatric weight estimation and can be used in a wider range of children.Copyright © 2013 American College of Emergency Physicians. Published by Mosby, Inc. All rights reserved.

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