Post-occlusional hyperemia for fractional flow reserve assessment and pull-back curve analysis.

Autor: Hirata, T., Tanigaki, T., Kawase, Y., Hirakawa, A., Omori, H., Okamoto, S., Ota, H., Sobue, Y., Kikuchi, J., Okubo, M., Kamiya, H., Kawasaki, M., Suzuki, T., Pijls, N. H. J., Matsuo, H.
Zdroj: Cardiovascular Intervention & Therapeutics; Apr2020, Vol. 35 Issue 2, p142-149, 8p
Abstrakt: Balloon occlusion is a potential method for inducing hyperemia to measure post-percutaneous coronary intervention (PCI) fractional flow reserve (FFR). The objective of this study was to determine the clinical usefulness of post-occlusional hyperemia. FFRs measured using post-occlusional hyperemia caused by 30 (FFRoccl30) and 60 s (FFRoccl60) of balloon occlusion after PCI were compared in 60 lesions from 60 patients. The duration of hyperemia was also measured. There was a strong correlation between FFRoccl30 and FFRoccl60 (r = 0.969, p < 0.01). The duration of hyperemia was significantly longer with FFRoccl60 than with FFRoccl30 (68 ± 23 vs. 37 ± 15 s, p < 0.01). The time required for pullback curve analysis was around 45 s. However, in 7 (12%) cases, the duration of hyperemia with FFRoccl60 was < 45 s, which was not enough for pull-back curve analysis. To predict the duration of hyperemia with FFRoccl60 ≥ 45 s, the receiver operating characteristic curve analysis revealed a cut-off value of 25 s of hyperemia with FFRoccl30. FFRoccl30 is sufficient for diagnostic purposes. FFRoccl60 is suitable for pull-back curve analysis in select cases based on predictions made using the duration of hyperemia with FFRoccl30. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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