Results of d-dimer, lower-limb ultrasonography and chest computed tomography scan in 48 patients with a clinical suspicion of pulmonary embolism and in 75 patients without clinical suspicion of pulmonary embolism
| Patients with suspicion of pulmonary embolism, n (%) | Patients without a suspicion of pulmonary embolism, n (%) | p Value (suspected v not suspected) | |
|---|---|---|---|
| *Two patients with a deep-vein thrombosis on ultrasonography also had a positive chest computed tomography scan. | |||
| n | 48 (39%) | 75 (61%) | |
| d-dimer <500 μg/l | 11 (23%) | 17 (23%) | 0.97 |
| Positive ultrasonography* | 1 (2.1%) | 1 (1.3%) | 0.63 |
| Positive computed tomography scan | 3 (6.3%) | 1 (1.3%) | 0.13 |