Abstract
Assessment of volume and hydration status is far from easy and therefore technology such as bioelectrical impedance vector analysis (BIVA) may complement our examination techniques. This study highlights the fact that clinical assessment of volume balance and BIVA may correlate, but whether the routine use of BIVA will avoid significant volume overload in the critically ill remains unknown. Further studies are needed but at the moment appear a little way off.
Highlights
Assessment of volume and hydration status is far from easy and technology such as bioelectrical impedance vector analysis (BIVA) may complement our examination techniques
* Correspondence: michael.joannidis@i-med.ac.at 3Division of Intensive Care and Emergency Medicine, Department of Internal Medicine, Medical University Innsbruck, Anichstraße 35, A-6020 Innsbruck, Austria Full list of author information is available at the end of the article
Tracers are distributed within the order of 3–4 hours following oral loading, correction can be made for exchange with non-aqueous hydrogen and total body water can be measured with a precision and accuracy of 1–2 %
Summary
Assessment of volume and hydration status is far from easy and technology such as bioelectrical impedance vector analysis (BIVA) may complement our examination techniques. * Correspondence: michael.joannidis@i-med.ac.at 3Division of Intensive Care and Emergency Medicine, Department of Internal Medicine, Medical University Innsbruck, Anichstraße 35, A-6020 Innsbruck, Austria Full list of author information is available at the end of the article Bioelectrical impedance analysis was originally introduced as a tool for assessing body composition and nutritional status, but early studies highlighted some limitations of this technique with variation in electrolyte levels, acute changes in hydration status and problems with some of the standard equations employed creating some disaffection [6, 7].
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