Related Experiment Video
Updated: Jun 23, 2026

Clinical Anthropometrics and Body Composition from 3-Dimensional Optical Imaging
Published on: June 7, 2024
Visual estimation of patients' body weight in hospital: the more observers, the better?
Sylvain Goutelle1,2,3, Laurent Bourguignon4,5,6, Nathalie Bertrand-Passeron4,7
1Hospices Civils de Lyon, Hôpital Antoine Charial, ADCAPT - Service Pharmaceutique, 40 Avenue de la Table de Pierre, 69340, Francheville, France. sylvain.goutelle@chu-lyon.fr.
Objective:
Patients are not always weighed in hospitals. A visual estimate of patients' body weight is often used. Little information exists about the validity of this practice. We assessed the visual estimation of body weight in a population of elderly hospitalised patients.
Method:
Three observers performed a visual estimation of weight in 71 geriatric patients. Estimated body weights from each observer were compared to measured body weights. Various panels--three panels of two observers and two panels of three observers--were also evaluated.
Results:
Overall results showed that a three observer panel gave better weight estimates than one or two individuals.
Conclusion:
While further clinical studies are necessary to confirm these findings, using the mean or the median of several visual estimates may be a practical solution for body weight estimation when weighing patients is not possible.
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Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
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Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.

