- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT01156636
Phosphodiesterase-5 (PDE5) Inhibition and Pulmonary Hypertension in Diastolic Heart Failure
Pulmonary Hypertension Secondary to Heart Failure With Preserved Systolic Function: a Target of Phosphodiesterase - 5 Inhibition in a 1- Year Duration Study
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Heart failure (HF) with preserved left ventricular (LV) ejection fraction (EF) (HFpEF) is a public health problem and a major topic in clinical cardiology. Its prevalence, in fact, is increasing and the outcome seems to be similar to that of HF with LV systolic dysfunction (LVSD). Pulmonary hypertension (PH) in HFpEF is highly prevalent and often severe and, like in LVSD (3), is a predictor of morbidity and mortality (4). Because of the thin wall and the distensibility, the right ventricle (RV) is much more vulnerable by an excessive afterload than by preload. The pulmonary circulation is a central determinant of RV afterload, and an increase in impendance to RV ejection, like occurring in LV dysfunction, can easily result in RV failure, tricuspid regurgitation, central venous pressure (CVP) rise. Development of RV failure is unanimously viewed as a predictor of poor prognosis but the underlying mechanisms have not been extensively investigated.
Because of the prevalence and clinical significance of PH secondary to HF, attenuation of the pulmonary vascular tone and of the RV hemodynamic burden has been suggested as a goal to be achieved with HF therapy. Attempts with endothelin receptor antagonists, or prostacyclin analogues, were basically unsuccessful. Experimental models and human studies, showing that in HF nitric oxide (NO) - dependent pulmonary vasodilatation is impaired and pulmonary vascular resistance elevation is at least in part due to pulmonary endothelial dysfunction, have suggested therapeutic strategies with agents that increase NO activity, like nitrates or phosphodiesterase - 5 (PDE5) inhibitors (12-14). The latter agents offer the double advantage of selectively dilating the pulmonary vessels and not producing tachyphylaxis.
In this 1-year duration study, the primary end-point was to probe whether pulmonary hemodynamics and RV performance in HFpEF with PH may be targets of PDE5 inhibition with sildenafil.
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Fase 2
- Fase 3
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- LVEF >50%
- sinus rhythm and stable clinical condition defined as no changes in therapeutic regimen, or hospitalization in the 6 months preceding recruitment.
- pulmonary artery systolic pressure > 40 mm Hg,
Exclusion Criteria:
- Patients receiving nitrates
- A history of pulmonary disease
- Alternative causes of PH other than cardiac-related
- Renal failure (creatinine > 2mg/dL)
- Anemia
- Pericardial disease
- Cardiac amyloidosis
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Firedobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
---|---|
Placebo komparator: Placebo
|
|
Aktiv komparator: Sildenafil
|
50 mg 3 times/day for 1 year
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
---|---|
Pulmonary hemodynamics
Tidsramme: 1 year
|
1 year
|
Samarbejdspartnere og efterforskere
Sponsor
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Hjertesygdomme
- Hjerte-kar-sygdomme
- Karsygdomme
- Luftvejssygdomme
- Lungesygdomme
- Hjertefejl
- Forhøjet blodtryk
- Hypertension, lunge
- Hjertesvigt, diastolisk
- Molekylære mekanismer for farmakologisk virkning
- Vasodilatorer
- Urologiske midler
- Enzymhæmmere
- Fosfodiesterasehæmmere
- Fosfodiesterase 5-hæmmere
- Sildenafil Citrat
Andre undersøgelses-id-numre
- 444-10
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