LOINC long common name : Right atrial Intrachamber pressure estimated by US;
LOINC short name : RA Intrachamber pres US est;
LOINC description : Right atrial pressure (RAP) can be estimated based on the diameter and collapsibility
of the inferior vena cava (IVC) during inspiration as measured by ultrasound. Smaller
diameter with greater than 50% collapsibility generally indicates normal RAP, while
larger diameter and less than 50% collapsibility may indicate elevated RAP. The estimated
RAP can be combined with tricuspid regurgitant jet velocity measurement to estimate
the systolic right ventricular pressure [LOINC: 82341-9]. [PMID: 20620859];
Has component