Summary of False-Positive V/Q Scans
| V/Q | Diagnosis |
|---|---|
| Intermediate probability (n = 7) | IPAH (n = 4) |
| IPAH and emphysema (n = 1) | |
| ASD and pulmonary fibrosis (n = 1) | |
| Pulmonary fibrosis (n = 1) | |
| High probability (n = 8) | IPAH (n = 3) |
| PVOD (n = 1) | |
| APAH and ASD (n = 2) | |
| Scleroderma and pulmonary fibrosis (n = 1) | |
| Apical bullae: apical mismatch on V/Q (n = 1) |
IPAH = idiopathic pulmonary arterial hypertension; ASD = atrial septal defect; PVOD = pulmonary venoocclusive disease; APAH = associated pulmonary arterial hypertension.