caa a22 4500 475787455 CHVBK 20180406123703.0 cr unu---uuuuu 170329e20001201xx s 000 0 eng 10.1007/s004140000154 doi (NATIONALLICENCE)springer-10.1007/s004140000154 The calculation of blood ethanol concentrations in males and females [Elektronische Daten] [S. Seidl, U. Jensen, A. Alt] In German-speaking countries, blood ethanol concentrations (BECs) are usually calculated using Widmark's equation. The distribution factor r of this equation is a correction factor needed to obtain a reduced body mass and corresponds to the ratio of total body water and blood water content. To enhance the reliability of Widmark's model equation, the body weight, body height, blood water content and total body water of 256 women and 273 men were measured. The ratio of body water to blood water ranged from 0.44 to 0.80 in women and from 0.60 to 0.87 in men. For both sexes equations were developed by multiple regression analysis which allow the determination of the individual, more realistic distribution factors rFI (for females) and rMI (for males) even when only body height and body weight are known. Drinking experiments revealed a clearly higher congruence of calculated and measured blood ethanol concentrations when rFI or rMI were used instead of rigid distribution factors, i.e. 0.6 for women and 0.7 for men with or without the assumption of a 10% so-called resorption deficit. Additionally, Widmark's equation in combination with rFI or rMI allows a more accurate prediction of blood ethanol concentrations than the equations of Watson and Ulrich. Springer-Verlag Berlin Heidelberg, 2000 Key words Bioelectric impedance analysis nationallicence Total body water nationallicence Widmark's equation nationallicence Watson's equation nationallicence Seidl S. Institute of Legal Medicine, University of Erlangen-Nürnberg, Universitätsstrasse 22, 91054 Erlangen, Germany e-mail: stephan.seidl@recht.med.uni-erlangen.de, Tel.: +49-9131-8522272, Fax: +49-9131-8522274, DE aut Jensen U. Department of Stochastics, University of Ulm, Helmholtzstrasse 18, 89070 Ulm, Germany, DE aut Alt A. Department of Legal Medicine, University of Ulm, Prittwitzstrasse 6, 89075 Ulm, Germany, DE aut https://doi.org/10.1007/s004140000154 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s004140000154 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Seidl S. Institute of Legal Medicine, University of Erlangen-Nürnberg, Universitätsstrasse 22, 91054 Erlangen, Germany e-mail: stephan.seidl@recht.med.uni-erlangen.de, Tel.: +49-9131-8522272, Fax: +49-9131-8522274, DE aut NATIONALLICENCE 700 1- Jensen U. Department of Stochastics, University of Ulm, Helmholtzstrasse 18, 89070 Ulm, Germany, DE aut NATIONALLICENCE 700 1- Alt A. Department of Legal Medicine, University of Ulm, Prittwitzstrasse 6, 89075 Ulm, Germany, DE aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer