Pulmonary shunt on TTCE | Persons n | PAVM on chest CT n (%) | Transcatheter embolotherapy performed n (% of positive chest CT) | PPV % (95% CI) |
No shunt | 262 | 6 (2.3) | 0 (0) | 0 (0) |
Grade 1 | 201 | 27 (13.4) | 0 (0) | 0 (0) |
Grade 2 | 150 | 68 (45.3) | 38 (55.9) | 25.3 (19.1–32.9) |
Grade 3 | 159 | 147 (92.5) | 123 (83.7) | 77.4 (70.3–83.2) |
Total | 772 | 248 (32.1) | 161 (64.9) |
CT: computed tomography; PPV: positive predictive value.