Table 1 Detailed performances of the BLUE-protocol
Mechanism of dyspnea | Profiles of BLUE-protocol | Sensitivity | Specificity | Positive predictive value | Negative predictive value |
|---|---|---|---|---|---|
Acute hemodynamic pulmonary edema | B-profile | 97% | 95% | 87% | 99% |
(62/64) | (187/196) | (62/71) | (187/189) | ||
COPD in exacerbation or severe acute asthma | Nude profile | 89% | 97% | 93% | 95% |
(74/83) | (172/177) | (74/79) | (172/181) | ||
Pulmonary embolism | A-profile (with deep venous thrombosis) | 81% | 99% | 94% | 98% |
(17/21) | (238/239) | (17/18) | (238/242) | ||
Pneumothorax | A’-profile (with lung point) | 88% | 100% | 100% | 99% |
(8/9) | (251/251) | (8/8) | (251/252) | ||
Pneumonia | B’-profile | 11% | 100% | 100% | 70% |
(9/83) | (177/177) | (9/9) | (177/251) | ||
A/B profile | 14.5% | 100% | 100% | 71.5% | |
(12/83) | (177/177) | (12/12) | (177/248) | ||
C-profile | 21.5% | 99% | 90% | 73% | |
(18/83) | (175/177) | (18/20) | (175/240) | ||
A-V-PLAPS profile | 42% | 96% | 83% | 78% | |
(35/83) | (170/177) | (35/42) | (170/218) | ||
The four profiles | 89% | 94% | 88% | 95% | |
(74/83) | (167/177) | (74/84) | (167/176) |