Exercise Capacity Before and After AF Ablation in Patients With HFpEF
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ClinicalTrials.gov Identifier: NCT05376748 |
Recruitment Status :
Recruiting
First Posted : May 17, 2022
Last Update Posted : June 22, 2023
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Condition or disease |
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Heart Failure With Preserved Ejection Fraction Atrial Fibrillation |
Study Type : | Observational |
Estimated Enrollment : | 34 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Official Title: | Exercise Capacity in Patients With Heart Failure With Preserved Ejection Fraction Before and After Ablation of Atrial Fibrillation |
Actual Study Start Date : | April 15, 2022 |
Estimated Primary Completion Date : | June 30, 2024 |
Estimated Study Completion Date : | December 30, 2024 |

- Change in peak VO2 [ Time Frame: before AF ablation and 4 months after AF ablation ]cardiopulmonary exercise testing will be performed & peak VO2 measured at baseline & follow up visit
- Change in KCCQ score [ Time Frame: before and 4 months after AF ablation ]Kansas City Cardiomyopathy Questionnaire (KCCQ) will be obtained at baseline visit & again at ablation follow up visit. Scale 0-100 with higher scores signifying better quality of life.
- Percent change in NTproBNP [ Time Frame: before and 4 months after AF ablation ]Initial sample taken day of AF ablation as is standard of care; reassessed at 4 month f/u visit
- Difference in peak VO2 in patient with vs. without chronic rate control [ Time Frame: 4 months post-ablation ]4 months f/u cardiopulmonary exercise testing performance compared between those with and without chronic rate control
Biospecimen Retention: Samples Without DNA

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Ages Eligible for Study: | 18 Years to 110 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- H2FpEF score of ≥ 6 (corresponding to >90% probability of HFpEF (19))
- echocardiogram within the past 2 years that reported a LV ejection fraction ≥ 50%
- at least one symptom of HF (dyspnea on exertion, orthopnea or paroxysmal nocturnal dyspnea).
- AF ablation scheduled at UVMMC
Exclusion Criteria:
- Life expectancy <12 months
- moderate or more valvular disease
- inability to walk on a treadmill

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05376748
Contact: Nicole Habel, MD | 8028470000 | nicole.habel@uvmhealth.org | |
Contact: Amy Henderson | amy.henderson@uvmhealth.org |
United States, Vermont | |
University of Vermont Medical Center | Recruiting |
Burlington, Vermont, United States, 05405 | |
Contact: Nicole Habel, MD nicole.habel@uvmhealth.org |
Principal Investigator: | Nicole Habel, MD | University of Vermont |
Responsible Party: | Nicole Habel, MD, Principal Investigator, University of Vermont |
ClinicalTrials.gov Identifier: | NCT05376748 |
Other Study ID Numbers: |
00001607 |
First Posted: | May 17, 2022 Key Record Dates |
Last Update Posted: | June 22, 2023 |
Last Verified: | June 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | Yes |
Ablation HFpEF atrial fibrillation exercise capacity peak oxygen consumption |
Heart Failure Atrial Fibrillation Heart Diseases |
Cardiovascular Diseases Arrhythmias, Cardiac Pathologic Processes |