Mid-arm circumference can be used to estimate weight of adult and adolescent patients

G. Cattermole, C. Graham, T. Rainer
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引用次数: 28

Abstract

Objectives Many drug and fluid regimens in emergency medicine are weight dependent in adults, but no standard adult weight estimation tools exist. Paediatric weight is often estimated in emergency situations using methods based on age or height when direct measurement is not possible, and recently, methods based on mid-arm circumference (MAC) have also been developed. The aim of this study was to derive and validate an accurate MAC-based method for weight estimation for use in all age groups. Methods Data were obtained from the US National Health and Nutrition Examination Survey (NHANES). MAC-based methods of weight estimation were derived in 8498 subjects (5595 adults aged 16–80 years, 2903 children aged 1–15.9 years) from the NHANES 2011–2012 dataset, using linear regression. NHANES 2009–2010 was used for validation in 9022 subjects (6049 adults aged 16–79 years, 2973 children aged 1–15.9 years). Results A simplified method of MAC-based weight estimation was derived from linear regression equation: weight in kg=4×MAC (in cm)—50. On validation, results in children aged 1–10.9 years were poor. In adults and children aged 11–15.9 years, over 60%, 90% and 98% of estimates fell, respectively, within 10%, 20% and 30% of actual weights when using the simplified formula. Conclusions In this description of a method for estimating weight in adults, we have derived and validated a simplified formula that is at least as precise in adults and adolescents as commonly used paediatric weight estimation tools in children.
中臂围可用于估计成人和青少年患者的体重
目的急诊医学中许多药物和液体方案对成人体重有依赖性,但没有标准的成人体重估计工具。在无法直接测量的情况下,通常在紧急情况下使用基于年龄或身高的方法来估计儿童体重,最近也开发了基于中臂围(MAC)的方法。本研究的目的是推导并验证一种准确的基于mac的体重估计方法,适用于所有年龄组。方法数据来源于美国国家健康与营养检查调查(NHANES)。采用线性回归方法,对来自NHANES 2011-2012数据集的8498名受试者(5595名16-80岁的成年人,2903名1-15.9岁的儿童)进行基于mac的体重估计。采用NHANES 2009-2010对9022名受试者(6049名16-79岁的成人,2973名1-15.9岁的儿童)进行验证。结果由线性回归方程推导出基于mac的体重估计的简化方法:体重单位kg=4×MAC(单位cm) -50。在验证时,1-10.9岁儿童的结果较差。在11-15.9岁的成人和儿童中,使用简化公式时,超过60%、90%和98%的估计值分别落在实际体重的10%、20%和30%以内。在对成人体重估计方法的描述中,我们推导并验证了一个简化公式,该公式在成人和青少年中至少与儿童常用的儿科体重估计工具一样精确。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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