Table 2.
Computed Tomography Abnormalities in 39 Mechanically Ventilated Patients with Severe COVID-19 Pneumonia
| Computed Tomography Findings | All (N = 39) | |
|---|---|---|
| Aerated lung, % | 23.5 (±16.7) |
|
| Ground-glass opacity, % | 36.3 (±24.7) |
|
| Dense parenchymal opacification, % | 42.7 (±27.1) | |
| Number of Patients | Proportion (%) | |
|---|---|---|
| Pulmonary embolism | 15 | 15/39 (38.5) |
| Dilated peripheral vessels | 21 | 21/33* (63.6) |
| 1–5 segments | 14 | 14/21 (66.7) |
| 6–10 segments | 7 | 7/21(33.3) |
| >10 segments | 0 | 0/21 (0) |
| Dilated peripheral vessels without PE | 10 | 10/21 (47.6) |
| Perfusion defect present | 18 | 18/18† (100) |
| 1–5 segments | 14 | 14/18 (77.8) |
| 6–10 segments | 4 | 4/18 (22.2) |
| >10 segments | 0 | 0/18 |
| Perfusion defects without PE | 8 | 8/18 (44.4) |
| DECT perfusion defect morphology | ||
| Wedge shaped | 3 | 3/18 (16.7) |
| Mottled | 9 | 9/18 (50) |
| Mixed pattern | 6 | 6/18 (33.3) |
| Deep venous thrombosis | 4 | 4/22‡ (18.2) |
Definition of abbreviations: COVID-19 = coronavirus disease; DECT = dual-energy computed tomography; PE = pulmonary embolism.
*
Of 39 patients, 33 had at least two assessable lobes not obscured by dense collapse or consolidation.
†
Of 20 patients, 18 had at least two assessable lobes on pulmonary blood volume color maps.
‡
Twenty-two patients underwent peripheral limb ultrasound or computed tomography venography.