How inferior vena cava collapsibility index from a novel implantable sensor correlates with estimated plasma volume and NT-proBNP: a study in patients with chronic heart failure

Abstract

Background: A new wireless implantable sensor can measure inferior vena cava (IVC) area and collapsibility index and was invented for remote monitoring in heart failure. Study objective: To evaluate the relationship between IVC collapsibility, estimated plasma volume, and NT-proBNP concentration in patients with chronic heart failure (CHF).