Utility of Saline-Induced Resting Full-Cycle Ratio Compared with Resting Full-Cycle Ratio and Fractional Flow Reserve

Autor: Takao Sato, Sonoka Goto, Yusuke Ohta, Yuji Taya, Sho Yuasa, Minoru Takahashi, Masaaki Okabe, Yoshifusa Aizawa
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Journal of Interventional Cardiology, Vol 2020 (2020)
Druh dokumentu: article
ISSN: 0896-4327
1540-8183
DOI: 10.1155/2020/5787439
Popis: Background. The saline-induced distal coronary pressure/aortic pressure ratio predicted fractional flow reserve (FFR). The resting full-cycle ratio (RFR) represents the maximal relative pressure difference in a cardiac cycle. Therefore, the present study aimed to compare the results of saline-induced RFR (sRFR) with FFR. Methods. Seventy consecutive lesions with only moderate stenosis were included. The FFR, RFR, and sRFR values were compared. The sRFR was assessed using an intracoronary bolus infusion of saline (2 mL/s) for five heartbeats. The FFR was obtained after an intravenous injection of papaverine. Results. Overall, the FFR, sRFR, and RFR values were 0.78 ± 0.12, 0.79 ± 0.13, and 0.83 ± 0.14, respectively. With regard to anatomical morphology were 40, 18, and 12 cases of focal, diffuse, and tandem lesion. There was a significant correlation between the sRFR and FFR (R = 0.96, p
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