One-Year Outcome of Fractional Flow Reserve-Based Coronary Intervention in Japanese Daily Practice　― CVIT-DEFER Registry

• Published in: Circulation Journal Vol. 81; no. 9; pp. 1301 - 1306
• Main Authors: Tanaka, Nobuhiro, Nakamura, Masato, Akasaka, Takashi, Kadota, Kazushige, Uemura, Shirou, Amano, Tetsuya, Shiode, Nobuo, Morino, Yoshihiro, Fujii, Kenshi, Hikichi, Yutaka, for the CVIT-DEFER Registry Investigators
• Format: Journal Article
• Language: English
• Published: Japan The Japanese Circulation Society 2017
• Subjects: Aged; Aged, 80 and over; Fractional flow reserve; Fractional Flow Reserve, Myocardial; Humans; Japanese Association of Cardiovascular Intervention Therapeutics (CVIT); Middle Aged; Percutaneous Coronary Intervention; Prospective Studies; Registries; Fractional flow reserve; Japanese Association of Cardiovascular Intervention Therapeutics (CVIT); Percutaneous coronary intervention
• ISSN: 1346-9843; 1347-4820
• DOI: 10.1253/circj.CJ-16-1213

Background:Clinical use of fractional flow reserve (FFR) has been rapidly increasing, but outcomes after FFR-based coronary intervention in Japanese daily clinical practice have not been well investigated.Methods and Results:The prospective multicenter cardiovascular intervention therapeutics registry (CVIT)-DEFER enrolled consecutive patients for whom FFR measurement was clinically indicated. This study comprised 3,857 vessels in 3,272 patients. Lesions were categorized into 4 groups according to FFR result and revascularization strategy: group 1: FFR >0.8, and deferral of PCI (n=1992); group 2: FFR >0.8, then PCI (n=230); group 3: FFR ≤0.8, and deferral of PCI (n=506); and group 4: FFR ≤0.8, then PCI (n=1,129). The event rate for deferred lesions was significantly low compared with that for PCI lesions (3.5% vs. 6.6%; P<0.05). Vessel-related events occurred in 62 (3.1%), 11 (4.8%), 25 (4.9%), and 79 (7.0%) patients in groups 1, 2, 3, and 4, respectively. PCI for lesions in which FFR was >0.8 (group 2) showed no improvement in the event rate compared with a defer-strategy. On the other hand, deferred lesions with lower FFR values had a higher risk of vessel-related events.Conclusions:A FFR-based revascularization strategy in daily clinical practice was safe with regard to vessel-related events.