Status:
RECRUITING
The Effect of Beta-blocker on Chronotropic Response and Cardiorespiratory Fitness in Patients With Atrial Fibrillation
Lead Sponsor:
National Taiwan University Hospital
Conditions:
Atrial Fibrillation
Eligibility:
All Genders
20+ years
Phase:
NA
Brief Summary
This is a prospective study to evaluate changes in exercise capacity and chronotropic response to exercise before and after beta-blocker dosage reduction in patients with atrial fibrillation (AF).
Detailed Description
Rate control therapy is the first-line treatment for atrial fibrillation (AF). Resting heart rate(HR) is the treatment target of rate control therapy in current clinical practice; However, the optimal...
Eligibility Criteria
Inclusion
- \> 20 years of age.
- Clinically stable patients with persistent atrial fibrillation using beta-blocker as rate-control agent without dosage adjustment for at least 3 months.
- Resting heart rate \< 80 bpm.
- Left ventricular ejection fraction \> 50%.
Exclusion
- Beta-blocker usage due to indications other than rate control for atrial fibrillation.
- Inability to perform a cardiopulmonary exercise testing.
- Presence of contraindications for cardiopulmonary exercise testing according to the American College of Sports Medicine's Guidelines for Exercise Testing and Prescription.
- Patients with implantable cardioverter defibrillator or pacemaker.
- Pregnancy.
- Inability to provide informed consent.
Key Trial Info
Start Date :
July 1 2025
Trial Type :
INTERVENTIONAL
Allocation :
ESTIMATED
End Date :
December 31 2025
Estimated Enrollment :
40 Patients enrolled
Trial Details
Trial ID
NCT05332457
Start Date
July 1 2025
End Date
December 31 2025
Last Update
March 24 2025
Active Locations (1)
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1
National Taiwan University Hospital
Taipei, Taiwan, 100