Impact of Hydrostatic Pressure Variations Caused by Height Differences in Supine and Prone Positions on Fractional Flow Reserve Values in the Coronary Circulation.

ABSTRACT:

Objectives

To examine the influence of hydrostatic pressure on fractional flow reserve (FFR) in vivo.

Background

Systematic differences in FFR values have been observed previously in the left anterior descending artery (LAD), left circumflex artery (LCX), and right coronary artery (RCA). It has been suggested that as the hydrostatic pressure variations caused by the height differences between the catheter tip (mean aortic pressure (Pa)) and pressure-wire sensor (mean distal intracoronary pressure (Pd)) are small, intracoronary pressure need not be corrected.

Methods

Resting Pd/Pa and FFR values in 23 patients (27 lesions) were measured and compared in supine and prone positions. These values were corrected by hydrostatic pressure influenced by height levels and compar

SUBMITTER: Kawaguchi Y 

PROVIDER: S-EPMC6766341 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature