In:
Coronary Artery Disease, Ovid Technologies (Wolters Kluwer Health), Vol. 35, No. 2 ( 2024-03), p. 92-98
Kurzfassung:
Cardiac 15 O-water PET is a noninvasive method to evaluate epicardial and microvascular dysfunction and further quantitate absolute myocardial blood flow (MBF). Aim: The aim of this study was to assess the impact of revascularization on MBF and myocardial flow reserve (MFR) assessed with 15 O-water PET and invasive flow and pressure measurements. Methods In 21 patients with single-vessel disease referred for percutaneous coronary intervention (PCI), serial PET perfusion imaging and fractional flow reserve (FFR), coronary flow reserve (CFR) and index of microcirculatory resistance (IMR) were performed during PCI and after 3 months. Results In the affected myocardium, stress MBF and MFR increased significantly from before revascularization to 3 months after revascularization: stress MBF 2.4 ± 0.8 vs. 3.2 ± 0.8; P 〈 0.001 and MFR 2.5 ± 0.8 vs. 3.4 ± 1.1; P = 0.004. FFR and CFR increased significantly from baseline to after revascularization and remained stable from after revascularization to 3-month follow-up: FFR 0.64 ± 0.20 vs. 0.91 ± 0.06 vs. 0.91 ± 0.07; P 〈 0.001; CFR 2.4 ± 1.2 vs. 3.6 ± 1.9 vs. 3.6 ± 1.9; P 〈 0.001, whereas IMR did not change significantly: 30.3 ± 22.9 vs. 30.1 ± 25.3 vs. 31.9 ± 25.2; P = ns. After revascularization, an increase in stress MBF was associated with an increase in FFR ( r = 0.732; P 〈 0.001) and an increase in MFR ( r = 0.499; P = 0.021). IMR measured before PCI was inversely associated with improvement in stress MBF, ( r = −0.616; P = 0.004). Conclusion Recovery of myocardial perfusion after PCI was associated with an increase in FFR 3 months after revascularization. Microcirculatory dysfunction was associated with less improvement in myocardial perfusion.
Materialart:
Online-Ressource
ISSN:
0954-6928
DOI:
10.1097/MCA.0000000000001308
Sprache:
Englisch
Verlag:
Ovid Technologies (Wolters Kluwer Health)
Publikationsdatum:
2024
ZDB Id:
2042449-8
