Table 2.
The frequency of Wells’ score items and requested para-clinical data in patients suspicious to pulmonary embolism (PE)
| PE risk factors | Proven PE (n = 85) [n (%)] | Without PE (n = 279) [n (%)] | P* |
|---|---|---|---|
| Previous DVT/PE | 10 (11.7) | 31 (11.1) | 0.846 |
| Surgery | 25 (29.4) | 63 (22.6) | 0.197 |
| Immobilization | 24 (28.2) | 59 (21.1) | 0.185 |
| Clinical DVT | 31 (36.5) | 64 (22.9) | 0.016 |
| No alternative diagnosis | 47 (55.3) | 81 (29.1) | 0.001 |
| Hemoptysis | 12 (14.1) | 16 (5.7) | 0.018 |
| Cancer | 15 (17.6) | 60 (21.5) | 0.540 |
| Tachycardia (HR > 100/min) | 32 (37.6) | 98 (35.1) | 0.699 |
| Requested para-clinical | |||
| ABG analysis | 69 (81.2) | 231 (82.8) | 0.746 |
| ECG | 80 (94.1) | 273 (97.8) | 0.138 |
| Echocardiography | 66 (77.6) | 203 (72.7) | 0.400 |
| D-dimer | 11 (12.9) | 36 (12.9) | 0.999 |
| CDS | 47 (55.3) | 104 (37.3) | 0.004 |
*
Chi-square test
DVT: Deep vein thrombosis; PE: Pulmonary embolism; HR: Heart rate; ABG: Arterial blood gases; ECG: Electrocardiography; CDS: Color Doppler sonography