Predictive value of extravascular lung water indexed to predicted body weight

Table 1 Baseline characteristics of all severe sepsis patients in a medical intensive care unit

Characteristics	Value
Patients (n)	33
Baseline characteristics
Age (yr)	65.67 ± 15.49
Male	69.7%
APACHE II score	24.39 ± 7.921
BMI (kg/m²)	22.30 ± 5.679
Pneumonia	72.73%
Empyema	3.03%
Primary bloodstream infection	9.09%
Pressure sore infection	6.06%
Urosepsis	9.09%
ARDS	33.30%
Physiology at enrollment
Prior 24 h I/O balance (mL)	2286 ± 1165
Shock (vasopressor requirement)	84.85%
EVLWI (mL/kg)	16.64 ± 11.93
Oxygenation
PaO2/FiO2 ratio	173.4 ± 87.09
CXR score	2.24 ± 1.30
Lung injury score	2.04 ± 0.86
Laboratory data
Albumin (g/L)	0.021 ± 0.007
Platelet (109/L)	170.03 ± 135.47
WBC (109/L)	15.91 ± 9.24

Values are expressed as mean ± SD, frequency (%), unless otherwise noted. APACHE: Acute Physiology and Chronic Health Evaluation; BMI: Body mass index; ARDS: Acute respiratory distress syndrome; EVLW: Extravascular lung water; CXR: Chest X ray; WBC: White blood cell.

Table 2 Area under receiver operating characteristic curve of variables to predict in-hospital survival rate of medical intensive care unit patients with severe sepsis

Variable (s)	Area under curve	P value	95%CI
EVLWIp	0.849	0.001	0.72-0.98
EVLWIa	0.829	0.001	0.68-0.98
APACHE II score	0.721	0.03	0.54-0.90
LIS	0.706	0.04	0.52-0.89
CXR score	0.708	0.04	0.53-0.89

P value compared by receiver operating characteristic curve method to analyze the significance. EVLWIp: Extravascular lung water indexed to predicted body weight; EVLWIa: Extravascular lung water indexed to actual body weight; APACHE: Acute Physiology and Chronic Health Evaluation; LIS: Lung injury score; CXR: Chest X-ray.