[Malnutrition detected by "bioelectrical status" of total and segmental body mass to nutritional management of patients].
We examined 182 controls with Body Mass Index (BMI) between 20 and 25 kg/m2 and 246 hospitalised patients divided into 3 groups: the first one consisted of 70 severe malnourished with (BMI) < 20 kg/m2, the second one of 43 light malnourished with BMI between 20 and 25 kg/m2 and the last one of 133 obese with BMI > 25 kg/m2. The Resistance (Rs) and Reactance (Xc), with the Phase angle ((phi), are detected from total and segmental (Arm and "Trunk + Leg") body. We analysed electric parameters plotting them on 4 different graphs which reported the values of: 1) total Rs vs total Xc; 2) segmental Rs vs segmental Xc; 3) total Rs/height vs weight/ height; 4) total Xc/height vs weight/height. Rs and Xc were different in all groups: the severe malnourished patients (1st group) gave evidence of a paradoxical increase of Rs and a decrease of phi. The mean values decreased for the patient of the 2nd and 3rd group (the (phi reduced especially for the 2nd group). Referring to the segmental measures, "Trunk + Leg" biases total Rs and Xc much more than Arm. In addition the phi of "Trunk + Leg" is more similar to the total o than the Arm one. If compared with the total, this last one highly decreases in the patients of the 1st and 2nd group. We conclude that segmental bioelectrical values (Rs, Xc, phi) integrate the total one, because they allow to find out the correlation between total parameters and a specific body segment. Total and segmental Rs, Xc (and phi) values and segmental phi ratio are related to the malnutrition. The approach together with the analysis of the Graphics result to a prompt inspection of the individual bioelectrical status in subjects.
Miggiano
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Centro di Ricerca in Nutrizione Umana, Istituto di Biochimica e Biochimica Clinica, Facoltà di Medicina e Chirurgia, Università Cattolica S. Cuore, Roma, Italia.
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D000465:Algorithms; D001823:Body Composition; D015992:Body Mass Index; D016022:Case-Control Studies; D003196:Computer Graphics; D017097:Electric Impedance; D005260:Female; D006801:Humans; D008297:Male; D044342:Malnutrition / Q000175:diagnosis* / Q000628:therapy