Abstract
Background: Increased extra-vascular lung water (EVLW) is common in critical care and correlates with the severity of acute lung injury, length of intensive care unit stay and mortality. Lung ultrasound (LUS) can assess EVLW by determining the amount of ‘B-lines’: artefacts signifying alveolar-interstitial oedema. This study’s aim was to determine whether EVLW estimation with the help of LUS correlates with the more accurate PiCCO2® cardiac output system utilising transpulmonary thermodilution.Methods: This prospective observational study was undertaken at Universitas Academic Hospital, Bloemfontein. Patients were scanned according to a fixed protocol, followed by transpulmonary thermodilution. The cumulative B-line count was compared with the EVLW index generated by the PiCCO2® system.Results: Four males and six females were enrolled. The mean EVLW index was 9.1 ml/kg/m2 (standard deviation 1.45), and the median cumulative B-line count was 14 (interquartile range 6–25). A positive, but not statistically ...
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