Matching Perfusion and Metabolic Activity in HFpEF

Launched by UNIVERSITY OF PENNSYLVANIA · May 30, 2021

Keywords

ClinConnect Summary

This clinical trial, called "Matching Perfusion and Metabolic Activity in HFpEF," is exploring new treatments for individuals with Heart Failure with Preserved Ejection Fraction (HFpEF). The researchers want to see if certain medications, particularly Potassium Nitrate (KNO3), alone or combined with supplements like Propionyl-L-Carnitine (PLC) and Nicotinamide Riboside (NR), can help improve exercise endurance and muscle function in patients. If you're between the ages of 65 and 74 and have certain heart-related symptoms, you may qualify to participate. Key requirements include having a left ventricular ejection fraction of 50% or higher and being on stable heart medication for at least a month.

As a participant, you can expect to engage in some exercise testing and receive either the study medication or a placebo (a non-active substance) to compare the effects. The trial is currently recruiting participants, and it’s important to note that there are specific health conditions that may exclude you from joining, such as significant heart valve issues or certain lung diseases. If you're interested in learning more or think you might qualify, discussing this with your doctor could be a great next step!

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Eligibility criteria

• Inclusion Criteria:
• • 1. NYHA Class II-III symptoms
• • 2. Left ventricular ejection fraction \>= 50%
• • 3. Stable medical condition for at least 2 weeks, as per investigator judgment
• 4. Prior or current evidence for elevated filling pressures as follows:
• • a. Mitral early (E)/mitral septal tissue annular (e') velocity ratio \> 8, in the context of a septal e' velocity \<=7, in addition to one of the following: i. Large left atrium (LA volume index \> 34 mL/m2) ii. Chronic loop diuretic use for control of symptoms iii. Elevated natriuretic peptides within the past year (e.g. NTproBNP \> 125 pg/mL in sinus rhythm or \> 375 pg/mL if in atrial fibrillation) b. Mitral E/e' ratio \> 14 at rest or during exercise c. Elevated invasively-determined filling pressures previously (resting left ventricular end-diastolic pressure \>= 16 mm Hg or pulmonary capillary wedge pressure \>= 15 mmHg; or PCWP/LVEDP \>= 25 mmHg with exercise) d. Prior episode of acute heart failure requiring IV diuretics
• Exclusion Criteria:
• • 1. Age \<18 years old
• 2. Pregnancy:
• • 3. Treatment with organic nitrates or phosphodiesterase inhibitors that cannot be interrupted
• • 4. Uncontrolled atrial fibrillation, as defined by a resting heart rate \> 100 beats per minute at the time of the baseline assessment
• • 5. Hemoglobin \< 10 g/dL
• • 6. Subject inability/unwillingness to exercise
• • 7. Moderate or greater left sided valvular disease (mitral regurgitation, aortic stenosis, aortic regurgitation), mild or greater mitral stenosis, severe right-sided valvular disease
• • 8. Known hypertrophic, infiltrative, or inflammatory cardiomyopathy
• • 9. Clinically significant pericardial disease, as per investigator judgment
• • 10. Current angina due to clinically significant epicardial coronary disease, as per investigator judgment
• • 11. Acute coronary syndrome or coronary intervention within the past 2 months
• • 12. Primary pulmonary artery hypertension (WHO Group 1 Pulmonary Arterial Hypertension)
• • 13. Clinically significant lung disease as defined by: Chronic Obstructive Pulmonary Disease meeting Stage III or greater GOLD criteria (FEV1\<50%), treatment with oral steroids within the past 6 months for an exacerbation of obstructive lung disease, current use of supplemental oxygen aside from nocturnal oxygen for the treatment of obstructive sleep apnea, desaturation to \<90% on the baseline maximal effort cardiopulmonary exercise test
• • 14. Clinically-significant ischemia, as per investigator's judgement, on stress testing without either (1) subsequent revascularization, (2) an angiogram demonstrating the absence of clinically significant epicardial coronary artery disease, as per investigator judgment; (3) a follow-up 'negative' stress test, particularly when using a more specific technique (i.e., a negative perfusion imaging test following a 'positive' ECG stress test)
• • 15. Left ventricular ejection fraction \< 45% on a prior echocardiogram or cardiac MRI, unless the reduced LVEF occurred within the context of an uncontrolled supraventricular arrhythmia, with return of a normal ejection fraction following treatment of the arrhythmia
• • 16. Significant liver disease impacting synthetic function or volume control (ALT/AST \> 3x ULN, Albumin \< 3.0 g/dL)
• • 17. eGFR \< 30 mL/min/1.73m\^2
• • 18. Methemoglobin \> 5%
• • 19. Serum potassium \> 5.0 mEq/L
• • 20. Severe right ventricular dysfunction
• • 21. Baseline resting seated systolic blood pressure \> 180 mmHg or \< 100 mmHg
• • 22. Persistently low (\<100 mmHg) or high (\>180 mmHg) seated blood pressure at the baseline visit
• • 23. Orthostatic blood pressure response to the transition from supine to standing (\>20 mmHg reduction in systolic blood pressure 2-3 minutes after standing)
• • 24. Active participation in another study that utilizes an investigational agent (observational studies/registries allowed)
• • 25. Any condition that, in the opinion of the investigator, will interfere with the performance and completion of the study.