Table 3.
Diagnostic value of arterial blood gases in hepatopulmonary syndrome
| Laboratory results |
Frequency
(%) |
Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | P | |
| Pos | Neg | ||||||
| Pa02 < 70 and (A-a)02>30 | 100 | 4.5 | 100 | 92 | 85 | 100 | < 0.0001 |
| Pa02 < 70 | 100 | 4.5 | 100 | 95 | 83 | 100 | < 0.0001 |
| a02 < 65 | 70 | 4.5 | 70 | 98 | 77 | 95 | < 0.0001 |
| Pa02 < 60 | 30 | 4.5 | 30 | 92 | 66 | 87 | 0.039 |
| (A-a)02>15 | 100 | 75 | 100 | 25 | 23 | 10 | 0.1 |
| (A-a)02>20 | 100 | 63.6 | 100 | 36 | 26 | 100 | 0.24 |
| (A-a)02>30 | 100 | 31.8 | 100 | 70 | 88 | 89 | 0.001 |
| (A-a)02>40 | 90 | 11.4 | 90 | 88 | 65 | 75 | < 0.0001 |
| Orthodoxy>10 | 60 | 0 | 60 | 100 | 15 | 93 | < 0.001 |