Cited by 159Heart rate and cardiovascular healthCardiac electrophysiology and arrhythmiasHeart Rate Variability and Autonomic Control

Clinical Efficacy of Ivabradine in Patients With Inappropriate Sinus Tachycardia

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Cappato, Riccardo, Castelvecchio, Serenella, Ricci, Cristian, Bianco, Elisabetta, Vitali-Serdoz, Laura, Gnecchi-Ruscone, Tomaso, Pittalis, Mario, De Ambroggi, Luigi +5 more·2012·Journal of the American College of Cardiology

Abstract

Objectives The purpose of this study was to investigate the role of ivabradine in the treatment of symptomatic inappropriate sinus tachycardia using a double-blind, placebo-controlled, crossover design.Background Due to its I(f) blocking properties, ivabradine can selectively attenuate the high discharge rate from sinus node cells, causing inappropriate sinus tachycardia.Methods Twenty-one patients were randomized to receive placebo (n=10) or ivabradine 5 mg twice daily (n=11) for 6 weeks. After a washout period, patients crossed over for an additional 6 weeks. Each patient underwent symptom evaluation and heart rate assessment at the start and finish of each phase.Results After taking ivabradine, patients reported elimination of >70% of symptoms (relative risk: 0.25; 95% CI: 0.18 to 0.34; p<0.001), with 47% of them experiencing complete elimination. These effects were associated with a significant reduction of heart rate at rest (from 88±11 beats/min to 76±11 beats/min, p=0.011), on standing (from 108±12 beats/min to 92±11 beats/min, p<0.0001), during 24 h (from 88±5 beats/min to 77±9 beats/min, p=0.001), and during effort (from 176±17 beats/min to 158±16 beats/min, p=0.001). Ivabradine administration was also associated with a significant increase in exercise performance. No cardiovascular side effects were observed in any patients while taking ivabradine.Conclusions In this cohort, ivabradine significantly improved symptoms associated with inappropriate sinus tachycardia and completely eliminated them in approximately half of the patients. These findings suggest that ivabradine may be an important agent for improving symptoms in patients with inappropriate sinus tachycardia.

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Crossref · 10.1016/j.jacc.2012.06.031

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Research works printed but not linked: 2

  1. [2]2. Krahn AD, Yee R, Klein GJ, Morillo C. Inappropriate sinus tachy- cardia: evaluation and therapy. J Cardiovasc Electrophysiol 1995;6: 1124 -8.
  2. [4]4. Morillo CA, Klein GJ, Thakur RK, Li H, Zardini M, Yee R. Mechanisms of inappropriate sinus tachycardia: role of sympathovagal imbalance. Circulation 1994;90:873-7.

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Authors
Cappato, R., Castelvecchio, S., Ricci, C., Bianco, E., Vitali-Serdoz, L., Gnecchi-Ruscone, T., Pittalis, M., De Ambroggi, L., Baruscotti, M., Gaeta, M., Furlanello, F., Di Francesco, D., & Lupo, P. P.
Affiliations
  • IRCCS Policlinico San Donato (IT)
  • Don Carlo Gnocchi Foundation (IT)
  • University of Pavia (IT)
Corresponding author
Cappato, Riccardo
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
2012-10
Volume
60
Issue
15
Pages
1323-1329
ISSN
0735-1097 (ISSN-L)
OpenAlex
W2270618117
Cited by
159
References
21
Citations by year
2026: 4 · 2025: 9 · 2024: 9 · 2023: 6 · 2022: 8 · 2021: 17 · 2020: 13 · 2019: 10 · 2018: 9 · 2017: 10 · 2016: 13 · 2015: 24 · 2014: 10 · 2013: 15 · 2012: 1
FWCI
10.29
Type
journal article
Language
en
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart rate and cardiovascular health
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
Keywords
ivabradine, inappropriate sinus tachycardia, sinoatrial node, heart rate reduction, symptom relief, exercise performance
MeSH terms
Ivabradine, Administration, Oral, Adult, Benzazepines, Dose-Response Relationship, Drug, Double-Blind Method, Drug Administration Schedule, Electrocardiography, Female, Follow-Up Studies, Heart Rate, Humans, Male, Prospective Studies, Sinoatrial Node, Tachycardia, Sinus, Treatment Outcome, Cross-Over Studies, Cyclic Nucleotide-Gated Cation Channels

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