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• W2109335746 abstract "Background— Safe, effective therapy is needed for pediatric pulmonary arterial hypertension. Methods and Results— Children (n=235; weight ≥8 kg) were randomized to low-, medium-, or high-dose sildenafil or placebo orally 3 times daily for 16 weeks in the Sildenafil in Treatment-Naive Children, Aged 1–17 Years, With Pulmonary Arterial Hypertension (STARTS-1) study. The primary comparison was percent change from baseline in peak oxygen consumption (PV̇ o 2 ) for the 3 sildenafil doses combined versus placebo. Exercise testing was performed in 115 children able to exercise reliably; the study was powered for this population. Secondary end points (assessed in all patients) included hemodynamics and functional class. The estimated mean±SE percent change in PV̇ o 2 for the 3 doses combined versus placebo was 7.7±4.0% (95% confidence interval, −0.2% to 15.6%; P =0.056). PV̇ o 2 , functional class, and hemodynamics improved with medium and high doses versus placebo; low-dose sildenafil was ineffective. Most adverse events were mild to moderate in severity. STARTS-1 completers could enter the STARTS-2 extension study; patients who received sildenafil in STARTS-1 continued the same dose, whereas placebo-treated patients were randomized to low-, medium-, or high-dose sildenafil. In STARTS-2 (ongoing), increased mortality was observed with higher doses. Conclusions— Sixteen-week sildenafil monotherapy is well tolerated in pediatric pulmonary arterial hypertension. Percent change in PV̇ o 2 for the 3 sildenafil doses combined was only marginally significant; however, PV̇ o 2 , functional class, and hemodynamic improvements with medium and high doses suggest efficacy with these doses. Combined with STARTS-2 data, the overall profile favors the medium dose. Further investigation is warranted to determine optimal dosing based on age and weight. Clinical Trial Registration— http://www.clinicaltrials.gov . Unique identifier: NCT00159913." @default.
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• W2109335746 date "2012-01-17" @default.
• W2109335746 modified "2023-10-15" @default.
• W2109335746 title "A Randomized, Double-Blind, Placebo-Controlled, Dose-Ranging Study of Oral Sildenafil Citrate in Treatment-Naive Children With Pulmonary Arterial Hypertension" @default.
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• W2109335746 doi "https://doi.org/10.1161/circulationaha.110.016667" @default.
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