Table 2.
Positive and negative likelihood ratios and pre- and posttest odds for mortality, given a positive extravascular lung water test
| EVLW alone | Combined with ALI | Combined with ARDS | Combined with sLI | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EVLW index |
LR+ | LR- | Pretest odds |
Posttest odds |
LR+ | LR- | Pretest odds |
Posttest odds |
LR+ | LR- | Pretest odds |
Posttest odds |
LR+ | LR- | Pretest odds |
Posttest odds |
| EVLW/ABW | 1.83 | 0.55 | 0.38 | 0.69 | 2.27 | 0.70 | 0.38 | 0.86 | 1.89 | 0.79 | 0.38 | 0.71 | 4.40 | 0.70 | 0.38 | 1.66 |
| EVLW/PBW | 1.41 | 0.72 | 0.38 | 0.53 | 1.51 | 0.88 | 0.38 | 0.57 | 1.76 | 0.85 | 0.38 | 0.67 | 1.98 | 0.88 | 0.38 | 0.75 |
| EVLW/PBV | 2.11 | 0.59 | 0.38 | 0.80 | 1.76 | 0.85 | 0.38 | 0.67 | 2.11 | 0.86 | 0.38 | 0.80 | 3.52 | 0.78 | 0.38 | 1.33 |
ABW: actual body weight; ALI: acute lung injury; ARDS: acute respiratory distress syndrome; EVLW: extravascular lung water; LR-: negative likelihood ratio; LR+: positive likelihood ratio; PBV: pulmonary blood volume; PBW: predicted body weight; sLI: severe lung injury. A positive EVLW test was defined as EVLW/ABW ratio > 10 ml/kg, EVLW/PBW ratio > 10 ml/kg and EVLW/PBV ratio > 1.5.