Evidence map›Paper›PMID 35596935›Full record

Trial reportEuropean journal of heart failure2022

Effects of sildenafil on symptoms and exercise capacity for heart failure with reduced ejection fraction and pulmonary hypertension (the SilHF study): a randomized placebo-controlled multicentre trial.

Trond J Cooper, John G F Cleland, Marco Guazzi, Pierpaolo Pellicori, Tuvia Ben Gal, Offer Amir, Abdallah Al-Mohammad, Andrew L Clark, Alex McConnachie, Kjetil Steine and 1 more

Open access · hybridAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in European journal of heart failure, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
5.6field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 38 citations in OpenAlex.

  1. Guideline
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  12. The right ventricle: the co-star in the complex history of heart failure.European heart journal supplements : journal of the European Society of Cardiology · 2025
    Article
  13. 2024 update in heart failure.ESC heart failure · 2025
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 9 institutions in 5 countries.

Trond J CooperStavanger University Hospital, Stavanger, Norway.
John G F ClelandNational Heart Lung Institute, Imperial College, London, UK.
Marco GuazziCardiology Department, University of Milano, San Paolo Hospital, Milan, Italy.
Pierpaolo PellicoriRobertson Centre for Biostatistics and Glasgow Clinical Trials Unit, University of Glasgow, University Avenue, Glasgow, UK.
Tuvia Ben GalHeart Failure Unit, Cardiology Department, Rabin Medical Center, Petah Tikva and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
Offer AmirDivision of Cardiology, Hadassah Medical Center, Faculty of Medicine, Hebrew University Jerusalem Israel & Azrieli Faculty of Medicine, Bar-Ilan University, Zfat, Israel.
Abdallah Al-MohammadUniversity of Sheffield, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, the UK, Sheffield, UK.
Andrew L ClarkHull University Teaching Hospitals NHS Trust, Castle Hill Hospital, Cottingham, UK.
Alex McConnachieRobertson Centre for Biostatistics and Glasgow Clinical Trials Unit, University of Glasgow, University Avenue, Glasgow, UK.
Kjetil SteineDepartment of Cardiology, Akershus University Hospital, Oslo, Norway.
Kenneth DicksteinUniversity of Bergen, Stavanger University Hospital, Stavanger, Norway.
Stavanger University Hospital · NOUniversity of Glasgow · GBAkershus University Hospital · NOCastle Hill Hospital · GBHebrew University of Jerusalem · ILImperial College London · GBRabin Medical Center · ILUniversity of Milan · ITUniversity of Sheffield · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsPulmonary hypertension (PHT) may complicate heart failure with reduced ejection fraction (HFrEF) and is associated with a substantial symptom burden and poor prognosis. Sildenafil, a phosphodiesterase-5 (PDE-5) inhibitor, might have beneficial effects on pulmonary haemodynamics, cardiac function and exercise capacity in HFrEF and PHT. The aim of this study was to determine the safety, tolerability, and efficacy of sildenafil in patients with HFrEF and indirect evidence of PHT. METHODS AND

resultsThe Sildenafil in Heart Failure (SilHF) trial was an investigator-led, randomized, multinational trial in which patients with HFrEF and a pulmonary artery systolic pressure (PASP) ≥40 mmHg by echocardiography were randomly assigned in a 2:1 ratio to receive sildenafil (up to 40 mg three times/day) or placebo. The co-primary endpoints were improvement in patient global assessment by visual analogue scale and in the 6-min walk test at 24 weeks. The planned sample size was 210 participants but, due to problems with supplying sildenafil/placebo and recruitment, only 69 patients (11 women, median age 68 (interquartile range [IQR] 62-74) years, median left ventricular ejection fraction 29% (IQR 24-35), median PASP 45 (IQR 42-55) mmHg) were included. Compared to placebo, sildenafil did not improve symptoms, quality of life, PASP or walk test distance. Sildenafil was generally well tolerated, but those assigned to sildenafil had numerically more serious adverse events (33% vs. 21%).

conclusionCompared to placebo, sildenafil did not improve symptoms, quality of life or exercise capacity in patients with HFrEF and PHT.

Indexed as

Heart FailureHypertension, PulmonaryVentricular Dysfunction, LeftAgedDouble-Blind MethodExercise ToleranceFemaleHumansMiddle AgedPhosphodiesterase 5 InhibitorsQuality of LifeSildenafil CitrateStroke VolumeVentricular Function, LeftPhosphodiesterase 5 InhibitorsSildenafil CitrateExercise capacityHeart failurePhosphodiesterase-5 inhibitorsPulmonary hypertensionQuality of lifeTolerability

Identifiers

PMID35596935
PMCPMC9544113
OpenAlexW4281257210

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.