Aim. To investigate whether lung ultrasound can be used to detect extravascular lung water (EVLW) overload in the intensive care unit early after surgery. Methods. This prospective study involved 60 patients without known cardiac or pulmonary diseases admitted to the intensive care unit at our hospital after elective abdominal or vascular surgery. The inferior vena cava collapsibility index (IVCcl), oxygen partial pressure (PaO2) and inspired oxygen pressure (FiO2) ratio (PaO2/FiO2), and appearance of B-lines ≤7 mm were determined upon admission to the intensive care unit and at 6, 12, and 24 h later. Fluid overload was defined as IVCcl ≤ 40% and the presence of B-lines ≤7 mm. Tissue oxygenation impairment was defined as a PaO2/FiO2 ratio \< 200.
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Inferior vena cava collapsibility index (IVCcl)
Timeframe: Baseline- upon admission to the ICU, 6, 12 and 24 hours after admission.
oxygen partial pressure (PaO2) and inspired oxygen pressure (FiO2) ratio
Timeframe: Baseline- upon admission to the ICU, 6, 12 and 24 hours after admission.
Dense B-lines
Timeframe: Baseline- upon admission to the ICU , 6, 12 and 24 hours after admission.