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Research Article

Doctors and Nurses Estimation of the Weight of Patients: A Preventable Source of Systematic Error

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Pages 611-615 | Published online: 30 Aug 2004
 

Abstract

Background: Although accurate determination of body weight is important in the management of the poisoned patient, many patients have their weight estimated rather than formally measured. Objective: To determine how good medical staff are at estimating patients*** body weights. Methods: Medical staff were asked to estimate the weight of six patients on a poisons ward. Estimated and actual patient weights were statistically compared. Results: Medical staff produced a large range of estimated weights for all patients. Patient weight was incorrectly estimated by greater than 10% in 61% of individual estimations. There was poor statistical correlation between actual and estimated weight. Conclusions: All patients administered medication based on body weight and those treated following an overdose of any substance should have formal body weight determined as part of their standard management.

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