Variable | Normal (0 to 5 [3] mmHg) | Intermediate (5 to 10 [8] mmHg) | High (15 mmHg) | |
IVC diameter | ≤2.1 cm | ≤2.1 cm | >2.1 cm | >2.1 cm |
Collapse with sniff | >50 percent | <50 percent | >50 percent | <50 percent |
Secondary indices of elevated RA pressure | Restrictive filling Tricuspid E/E' >6 Diastolic flow predominance in hepatic veins (systolic filling fraction <55 percent) |
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