Table 3.
Performance of abdominal CT-scan findings in the diagnosis of non-occlusive mesenteric ischemia
| Radiological sign | Definite NOMI (n = 75) (%) | NOMI ruled out (n = 39) (%) | Odds ratio | p | Sensitivity % | Specificity % | PPV % | NPV % |
|---|---|---|---|---|---|---|---|---|
| Abnormal wall enhancement | 62.0 | 28.6 | 4.07 (1.70–9.78) | <0.001 | 62 (50–73) | 71 (54–85) | 81 (69–91) | 48 (34–62) |
| Pneumatosis intestinalis | 32.4 | 15.4 | 2.64 (0.97–7.16) | 0.07 | 32 (22–44) | 85 (69–94) | 80 (61–92) | 40 (29–51) |
| Bowel dilatation | 62.2 | 56.4 | 1.27 (0.58–2.79) | 0.69 | 62 (50–73) | 44 (28–60) | 68 (55–78) | 38 (24–53) |
| Portal venous gas | 18.9 | 5.1 | 4.32 (0.93–20.09) | 0.05 | 19 (11–30) | 95 (83–99) | 88 (62–98) | 38 (28–49) |
| Atherosclerosis | 90.6 | 82.0 | 2.09 (0.68–6.48) | 0.23 | 91 (81–96) | 18 (8–34) | 68 (58–77) | 50 (23–77) |
Values in brackets represent the 95% confidence interval
NOMI non-occlusive mesenteric ischemia, NPV negative predictive value, PPV positive predictive value