Heart rate control by carvedilol in Japanese patients with chronic atrial fibrillation: The AF Carvedilol study

作者: Hiroshi Inoue , Hirotsugu Atarashi , Ken Okumura , Takeshi Yamashita , Masayuki Fukuzawa

DOI: 10.1016/J.JJCC.2016.05.012

关键词:

摘要: Background β-Blockers are used to control heart rate (HR) in patients with atrial fibrillation (AF). However, the appropriate dosage and efficacy of carvedilol Japanese AF yet be clarified. Methods In this multicenter, randomized, double-blind study, persistent or permanent received for 6 weeks following three dosage-regimen groups: 5-mg fixed-dose (n = 42), 10-mg dose-escalation 20-mg (n = 43). To evaluate each regimen dose–response relationship, changes 24-h mean HR (mHR) on Holter electrocardiograms from baseline 2, 4, were determined as primary endpoints. The effects circadian HR, proportion achieving target clinical symptoms, adverse events also examined. Results After 2 weeks, 5 mg decreased mHR significantly [6.6 (95% CI: 5.2–8.0) beats/min, p < 0.0001]. After showed a trend dose-dependent reduction (p = 0.0638): 7.6 (5.4–9.8) group; 8.9 (6.7–11.1) 10.6 (8.4–12.8) beats/min group. There no serious related carvedilol. Conclusions In AF, at once daily demonstrated significant reduction, step-wise dose escalation 20 mg reduction.

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