BSA — m²
IVC collapsibility and RA pressure estimate
Collapse index from maximum and minimum IVC diameters with sniff; RAP 3, 8 or 15 mmHg by the 2025 rule, with indeterminate states.
Quick reference:↑ RAP, pulmonary pressures and RV–PA coupling
Enter IVC diameter, end-expiration, IVC minimum diameter with sniff to calculate.
Quick tool: no study or demographics required. Values entered here are shared with other tools in this tab until New study.