Visualization of the improvement of myocardial perfusion after coronary intervention using motorized fractional flow reserve pullback curveReportar como inadecuado




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Cardiovascular Intervention and Therapeutics

pp 1–10

First Online: 10 December 2016Received: 27 July 2016Accepted: 07 December 2016

Abstract

This study aimed to evaluate the feasibility and utility of using motorized pullback of the pressure guidewire to provide a graphic assessment and prediction of the benefits of coronary intervention. Fractional flow reserve FFR measurements were performed with motorized pullback imaging in 20 patients who underwent successful percutaneous coronary intervention PCI of the left anterior descending artery. Physiological lesion length PLL was calculated using frame counts to determine stent length. FFR area was calculated by integrating the FFR values recorded during pullback tracing FFRarea. The percentage increase in FFR area %FFRarea was defined as the ratio of the difference between the pre- and post-intervention FFRarea to the total frame count. The average FFR values were enhanced following PCI, from 0.64 to 0.82, and the median value of the difference between pre- and post-interventional FFR values D-FFR and %FFRarea were 0.13 and 10.6%, respectively. The %FFRarea demonstrated a significant positive correlation with D-FFR R, 0.61; p < 0.01. PLL tended to be longer and the %FFRarea was smaller in lesions with a gradual pressure-drop pattern than those with an abrupt pressure-drop pattern 35.37 vs. 20.40 mm, p = 0.07; 5.78 vs. 16.21%, p < 0.05, respectively. Motorized pullback tracing was able to identify the extent and location of stenosis and help in appropriate stent implantation, in addition to visualizing and quantifying the improvement in FFR following PCI.

KeywordsFractional flow reserve Motorized pullback curve Coronary intervention  Download fulltext PDF



Autor: Akiko Matsuo - Satoshi Shimoo - Kazuaki Takamatsu - Yumika Tsuji - Atsushi Kyodo - Kayoko Mera - Masahiro Koide - Koji Iso

Fuente: https://link.springer.com/







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