Accuracy of FAST and pneumothorax scans
| Mechanism of injury | Scan type | n | Sensitivity (%) | Specificity (%) | PPV | NPV |
|---|---|---|---|---|---|---|
| All | FAST scan | 166 | 92.3 | 100 | 100 | 97.7 |
| Blunt trauma | FAST scan | 123 | 93.1 | 100 | 100 | 97.9 |
| Penetrating trauma | FAST scan | 43 | 90.0 | 100 | 100 | 97.1 |
| All | Pneumothorax | 126 | 84.6 | 100 | 100 | 98.3 |
FAST, focussed assessment with sonography in trauma; NPV, negative predictive value; PPV, positive predictive value.