• Ebrahim Nasiri and Reza Nasiri.
• Department of Anesthesiology, Faculty of Paramedical School, and Traditional and Complementary Medicine of Research Center, Mazandaran University of Medical Sciences, Sari, Iran.
• Anesth Essays Res. 2013 Sep 1; 7 (3): 341-5.

ContextAccurate patient weight is an important factor in the emergency and operating room departments.AimsThe aim of this study is to determine the accuracy of estimation of total body weight by legs and head weight measuring and comparison method in the anesthetized patients.Settings And DesignEducation of hospitals, Mazandaran University of Medical Sciences, prospective, observational study.Subjects And MethodsThis is prospective observational study. Nursing staff were asked to estimated weight that knows about a similar person weight on the operating room and matched together, then told his/her guests. They were measured total body weight before anesthesia and then patient head and legs weight after anesthesia. The main outcome was mean weight of these methods and percent accuracy in weight estimation for each group recorded.Statistical AnalysisDescriptive statistically used.ResultsOverall, 57.3% (243/425) of operating personnel estimations were equal with actual weight. 35.4% (150/425) of the estimations were less 10 kg than the actual weight and only 7.3 (31/425) of the estimations were above 5 kg of actual weight. The accuracy of overall estimations by operating personnel and its comparison to the accuracy of legs weight, head, and sum weight by a similar method is demonstrated.ConclusionsDespite having no formula in the critical intensive care and anesthesia region for estimation anesthetized, for comatose patient weight. We can use this formula, but where possible, should be based on measured weight for drug dose calculation and this is not possible, combination of these formulas is suitable.

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