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Recruiting NCT05723679

NCT05723679 Targeting Breathing Limitations to Improve Functional Outcomes in HFpEF

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Clinical Trial Summary
NCT ID NCT05723679
Status Recruiting
Phase
Sponsor University of Texas Southwestern Medical Center
Condition Heart Failure With Preserved Ejection Fraction
Study Type INTERVENTIONAL
Enrollment 78 participants
Start Date 2023-07-01
Primary Completion 2028-06-30

Eligibility & Interventions

Sex All sexes
Min Age 55 Years
Max Age 90 Years
Study Type INTERVENTIONAL
Interventions
HeO2 gas mixtureRoom air gas mixture

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

This trial targets 78 participants in total. It began in 2023-07-01 with a primary completion date of 2028-06-30.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

The overall purpose of this study is to investigate whether pulmonary limitations that increase the oxygen (O2) cost of breathing impact dyspnea on exertion (DOE) and peak exercise capacity in patients with HFpEF and obesity. As per investigator's hypothesis, obesity is likely a significant contributor to DOE and exercise intolerance in patients with HFpEF.

Eligibility Criteria

Inclusion Criteria: * signs and symptoms of heart failure * an ejection fraction \> 0.50; * objective evidence of diastolic dysfunction. elevated biomarkers (NT-proBNP \>300 ng/dl) or HF hospitalization * healthy volunteers Exclusion Criteria: * age \< 55 years * BMI \> 50 kg/m2 * Atrial fibrillation with poorly controlled heart rate * phosphodiesterase type 5 (PDE5) inhibitor use * severe valvular disease * severe Chronic obstructive pulmonary disease (COPD) * Chronic kidney disease (CKD) 4 or higher * any restriction of ambulation and mobility.

Contact & Investigator

Central Contact

Raksa B Moran, RN

✉ raksamoran@texashealth.org

📞 214-345-6574

Principal Investigator

Tony G Babb, Ph.D.

PRINCIPAL INVESTIGATOR

University of Texas Southwestern Medical Center

Frequently Asked Questions

Who can join the NCT05723679 clinical trial?

This trial is open to participants of all sexes, aged 55 Years or older, up to 90 Years, studying Heart Failure With Preserved Ejection Fraction. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

Is NCT05723679 currently recruiting?

Yes, NCT05723679 is actively recruiting participants. Contact the research team at raksamoran@texashealth.org for enrollment information.

Where is the NCT05723679 trial being conducted?

This trial is being conducted at Dallas, United States.

Who is sponsoring the NCT05723679 clinical trial?

NCT05723679 is sponsored by University of Texas Southwestern Medical Center. The principal investigator is Tony G Babb, Ph.D. at University of Texas Southwestern Medical Center. The trial plans to enroll 78 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: July 2026  ·  Data Methodology