Bioimpedance-measured volume overload predicts longer duration of mechanical ventilation in intensive care unit patients.

Purpose: Bioelectrical impedance analysis (BIA) is a technology that provides a rapid, non-invasive measurement of volume in body compartments and may aid the physician in the assessment of volume status. We sought to investigate the effect of BIA-measured volume status on duration of mechanical ventilation, 28-day mortality, and acute kidney injury requiring renal replacement therapy in a population of medical/surgical patients admitted to the intensive care unit (ICU).

Methods: Prospective observational study of adult patients who required mechanical ventilation within 24 hr of admission to ICU.