Sildenafil for improving outcomes in patients with corrected valvular heart disease and persistent pulmonary hypertension: a multicenter, double-blind, randomized clinical trial
- PMID: 29281101
- PMCID: PMC5905634
- DOI: 10.1093/eurheartj/ehx700
Sildenafil for improving outcomes in patients with corrected valvular heart disease and persistent pulmonary hypertension: a multicenter, double-blind, randomized clinical trial
Abstract
Aims: We aimed to determine whether treatment with sildenafil improves outcomes of patients with persistent pulmonary hypertension (PH) after correction of valvular heart disease (VHD).
Methods and results: The sildenafil for improving outcomes after valvular correction (SIOVAC) study was a multricentric, randomized, parallel, and placebo-controlled trial that enrolled stable adults with mean pulmonary artery pressure ≥ 30 mmHg who had undergone a successful valve replacement or repair procedure at least 1 year before inclusion. We assigned 200 patients to receive sildenafil (40 mg three times daily, n = 104) or placebo (n = 96) for 6 months. The primary endpoint was the composite clinical score combining death, hospital admission for heart failure (HF), change in functional class, and patient global self-assessment. Only 27 patients receiving sildenafil improved their composite clinical score, as compared with 44 patients receiving placebo; in contrast 33 patients in the sildenafil group worsened their composite score, as compared with 14 in the placebo group [odds ratio 0.39; 95% confidence interval (CI) 0.22-0.67; P < 0.001]. The Kaplan-Meier estimates for survival without admission due to HF were 0.76 and 0.86 in the sildenafil and placebo groups, respectively (hazard ratio 2.0, 95% CI = 1.0-4.0; log-rank P = 0.044). Changes in 6-min walk test distance, natriuretic peptides, and Doppler-derived systolic pulmonary pressure were similar in both groups.
Conclusion: Treatment with sildenafil in patients with persistent PH after successfully corrected VHD is associated to worse clinical outcomes than placebo. Off-label usage of sildenafil for treating this source of left heart disease PH should be avoided. The trial is registered with ClinicalTrials.gov, number NCT00862043.
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Comment in
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Aiming at the appropriate target for the treatment of pulmonary hypertension due to left heart disease.Eur Heart J. 2018 Apr 14;39(15):1265-1268. doi: 10.1093/eurheartj/ehx751. Eur Heart J. 2018. PMID: 29293952 No abstract available.
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The elephant in the room: reply.Eur Heart J. 2018 Sep 21;39(36):3397. doi: 10.1093/eurheartj/ehy241. Eur Heart J. 2018. PMID: 29688399 No abstract available.
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The elephant in the room.Eur Heart J. 2018 Sep 21;39(36):3396. doi: 10.1093/eurheartj/ehy239. Eur Heart J. 2018. PMID: 29688402 No abstract available.
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