著者
Tatsuhiko Hirao Yasuteru Yamauchi Rena Nakamura Takatoshi Shigeta Hiroshi Yoshida Shinichi Tachibana Atsuhito Oda Aki Ito Mitsutoshi Asano Hidetoshi Suzuki Tsukasa Shimura Manabu Kurabayashi Masahiko Goya Kaoru Okishige Tetsuo Sasano
出版者
International Heart Journal Association
雑誌
International Heart Journal (ISSN:13492365)
巻号頁・発行日
vol.62, no.2, pp.320-328, 2021-03-30 (Released:2021-03-30)
参考文献数
24

Second-generation cryoballoon (CB) ablation is effective in achieving pulmonary vein (PV) isolation (PVI) in atrial fibrillation (AF) patients. The "crosstalk" (CST) phenomenon has been reported to reduce unnecessary applications during CB ablation. Nevertheless, it is unclear under what conditions the CST phenomenon occurs.To seek the predictors of the CST phenomenon during CB-guided PVI, CST phenomenon in achieving ipsilateral superior PVI during inferior PV ablation was analyzed in AF patients who underwent de novo ablation using CB. CB occlusion status and nadir balloon temperature (NT) were compared in these patients, and all ablated superior PVs were categorized into three groups according to the necessity of the touch up ablation and effectiveness of the phenomenon.Of 1082 superior PVs, 16, 40, and 1026 were classified into the CST success, CST failure, and control groups (unnecessary CST), respectively. The proportion of superior PVs ablated with complete occlusion using the CB was significantly higher in the CST success group than in the other two groups. The proportion of superior PVs ablated with NT ≤ −46°C was higher in the CST success group than in the CST failure group. The CST phenomenon was always observed if CB ablation of the superior PVs was performed with both complete occlusion and NT ≤ −46°C and was almost always ineffective if it did not meet these two criteria (sensitivity, 100%; specificity, 93%).Successful CST ablation was highly predicted if complete PV occlusion and NT ≤ −46°C during CB ablation of the superior PVs were achieved.
著者
Naoki Sato Wataru Takahashi Atsushi Hirayama Masayoshi Ajioka Naoto Takahashi Kaoru Okishige XingLi Wang Akio Maki Hideki Maruyama Ursula Ebinger Masayuki Yamaguchi Yinuo Pang Hiroki Matsumoto Masatoshi Kawana
出版者
日本循環器学会
雑誌
Circulation Journal (ISSN:13469843)
巻号頁・発行日
pp.CJ-15-0227, (Released:2015-04-24)
参考文献数
27
被引用文献数
4 16

Background:Serelaxin, a recombinant form of human relaxin-2, is in development for treating acute heart failure (AHF) and a Phase II study in Japanese AHF patients was conducted.Methods and Results:A randomized, double-blind, placebo-controlled study of serelaxin at 10 and 30 µg·kg–1·day–1continuous intravenous infusion for up to 48 h, added to standard care for Japanese AHF patients. Primary endpoints were adverse events (AEs) through Day 5, serious AEs (SAEs) through Day 14, and serelaxin pharmacokinetics. Secondary endpoints included changes in systolic blood pressure (SBP) and cardiorenal biomarkers. A total of 46 patients received the study drug and were followed for 60 days. The observed AE profile was comparable between the groups, with no AEs of concern. Dose-dependent increase in the serum concentration of serelaxin was observed across the 2 dose rates of serelaxin. A greater reduction in SBP was observed with serelaxin 30 µg·kg–1·day–1vs. placebo (–7.7 [–16.4, 1.0] mmHg). A greater reduction in NT-proBNP was noted with serelaxin (–50.8% and –54.9% for 10 and 30 µg·kg–1·day–1, respectively at Day 2).Conclusions:Serelaxin was well tolerated in this study with Japanese AHF patients, with no AEs of concern and favorable beneficial trends on efficacy. These findings support further evaluation of serelaxin 30 µg·kg–1·day–1in this patient population.