Hemodynamic Effects of Pulmonary Arterial Hypertension-Specific Therapy in Patients With Heart Failure With Preserved Ejection Fraction and With Combined Post- and Precapillay Pulmonary Hypertension
•In patients with heart failure with preserved ejection fraction and combined post- and precapillary pulmonary hypertension, pulmonary arterial hypertension-specific therapy increased stroke volume.•Pulmonary arterial hypertension-specific therapy reduced right ventricular afterload.•The increase in...
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Published in: | Journal of cardiac failure Vol. 26; no. 1; pp. 26 - 34 |
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Main Authors: | , , , , , , , , , |
Format: | Journal Article |
Language: | English |
Published: |
United States
Elsevier Inc
01-01-2020
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Subjects: | |
Online Access: | Get full text |
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Summary: | •In patients with heart failure with preserved ejection fraction and combined post- and precapillary pulmonary hypertension, pulmonary arterial hypertension-specific therapy increased stroke volume.•Pulmonary arterial hypertension-specific therapy reduced right ventricular afterload.•The increase in stroke volume was accompanied by an increase in left ventricular filling pressures.
Drugs approved for pulmonary arterial hypertension have been considered for patients with heart failure with preserved ejection fraction and combined post- and precapillary pulmonary hypertension (Cpc-PH). We aimed to study changes in cardiac volumes, cardiac load and left ventricular (LV) filling pressures in patients with heart failure with preserved ejection fraction and Cpc-PH in response to pulmonary arterial hypertension-specific treatment.
In this prospective study, 23 patients with heart failure with preserved ejection fraction and Cpc-PH underwent right-heart catheterization, including acute provocation testing (fluid loading and inhaled nitric oxide) and cardiac MRI at baseline. Right-heart catheterization and cardiac MRI were repeated after 4 months of treatment. At baseline, acutely increasing preload by fluid loading resulted in a significant increase in pulmonary arterial wedge pressure (PAWP), whereas reducing right ventricular (RV) afterload and increasing LV distensability by acute administration of inhaled nitric oxide had no effect on PAWP. After 4 months of treatment, we observed a significant reduction in RV and LV afterload and increased RV and LV stroke volume, but PAWP significantly increased.
In patients with heart failure with preserved ejection fraction and Cpc-PH, 4 months of pulmonary arterial hypertension-specific treatment increased RV and LV stroke volume at the expense of increased PAWP. This increase in PAWP was similarly observed acutely after fluid loading. |
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ISSN: | 1071-9164 1532-8414 |
DOI: | 10.1016/j.cardfail.2019.07.547 |