Assessment of changes in body water by bioimpedance in acutely ill surgical patients.

Détails

ID Serval
serval:BIB_8ABDA73A4C9B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Assessment of changes in body water by bioimpedance in acutely ill surgical patients.
Périodique
Intensive Care Medicine
Auteur(s)
Chioléro R.L., Gay L.J., Cotting J., Gurtner C., Schutz Y.
ISSN
0342-4642 (Print)
ISSN-L
0342-4642
Statut éditorial
Publié
Date de publication
1992
Volume
18
Numéro
6
Pages
322-326
Langue
anglais
Résumé
OBJECTIVE: To evaluate the relationship between changes in body bioelectrical impedance (BI) at 0.5, 50 and kHz and the changes in body weight, as an index of total body water changes, in acutely ill surgical patients during the rapid infusion of isotonic saline solution.
DESIGN: Prospective clinical study.
SETTING: Multidisciplinary surgical ICU in a university hospital.
PATIENTS: Twelve male patients treated for acute surgical illness (multiple trauma n = 5, major surgery n = 7). Selection criteria: stable cardiovascular parameters, normal cardiac function, signs of hypovolemia (CVP < or = 5 mmHg, urine output < 1 ml/kg x h).
INTERVENTIONS: After baseline measurements, a 60 min fluid challenge test was performed with normal saline solution, 0.25 ml/kg/min [corrected].
MEASUREMENTS AND RESULTS: Body weight (platform digital scale), total body impedance (four-surface electrode technique; measurements at 0.5, 50 and 100 kHz) and urine output. Fluid retention induced a progressive decrease in BI at 0.5, 50 and 100 kHz, but the changes were significant for BI 0.5 and BI 100 only, from 40 min after the beginning of the fluid therapy onwards. There was a significant negative correlation between changes in water retention and BI 0.5, with individual correlation coefficients ranging from -0.72 to 0.95 (p < 0.01-0.0001). The slopes of the regression lines indicated that for each kg of water change, there was a mean decrease in BI of 18 ohm, but a substantial inter-individual variability was noted.
CONCLUSION: BI measured at low frequency can represent a valuable index of acute changes in body water in a group of surgical patients but not in a given individual.
Mots-clé
Acute Disease, Adolescent, Adult, Body Water/chemistry, Body Weight, Critical Illness, Electric Impedance, Hospitals, University, Humans, Infusions, Intravenous, Intensive Care Units, Male, Middle Aged, Postoperative Complications/diagnosis, Postoperative Complications/epidemiology, Prospective Studies, Sodium/blood, Sodium Chloride/administration & dosage, Sodium Chloride/diagnostic use, Switzerland/epidemiology, Water-Electrolyte Imbalance/diagnosis, Water-Electrolyte Imbalance/epidemiology, Weight Gain
Pubmed
Web of science
Création de la notice
21/01/2008 14:09
Dernière modification de la notice
03/03/2018 19:10
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