Table 5.
Metric | Sensitivity, % | Specificity, % | Confidence interval sensitivity | Confidence interval specificity | PPV, % | NPV, % | p value |
---|---|---|---|---|---|---|---|
Novel metrics | |||||||
VTI diastolic systolic ratio (>0.31) | 45 | 100 | 0.27–0.52 | 0.89–1.0 | 100 | 78 | <0.01 |
AAo-DAo angle (<21°) | 92 | 100 | 0.72–0.99 | 0.89–1.0 | 100 | 97 | <0.01 |
TAo-DAo angle (>98°) | 90 | 100 | 0.67–0.97 | 0.89–1.0 | 100 | 95 | <0.01 |
LV long strain (<12.8%) | 86 | 100 | 0.63–0.94 | 0.89–1.0 | 100 | 93 | <0.01 |
Standard metrics | |||||||
Combined mitral/aortic Z-score (<−4.1) | 63 | 65 | 0.43–0.74 | 0.48–0.78 | 56 | 77 | 0.03 |
Flow reversal PFO or aortic arch | 41 | 79 | 0.22–0.68 | 0.61–0.89 | 50 | 71 | 0.21 |
VTI, velocity time interval; AAo, ascending aorta; DAo, descending aorta; TAo, thoracic aorta; LV, left ventricular; PFO, patent foramen ovale.