Beta-blocker effects on heart rate and exercise capacity in atrial fibrillation
Part of Heart & circulation clinical trials.
This study looks at how taking a beta-blocker affects your resting heart rate during activity and how fit your heart and lungs are during an exercise test. It may help clarify whether the way the medication controls heart rate is linked to better exercise tolerance in people with persistent atrial fibrillation.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You’re over 20 years old.
- You have persistent atrial fibrillation and take a beta-blocker specifically to control your heart rate.
- Your beta-blocker dose has not changed for at least 3 months.
- Your resting heart rate is under 80 beats per minute.
- Your heart’s pumping strength (left ventricular ejection fraction) is above 50%.
- You can safely complete a cardiopulmonary (exercise) test and give informed consent.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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