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Pulmonary artery dilation speeds up the progression of pediatric idiopathic and heritable pulmonary arterial hypertension (PAH), a Japanese study shows. Dilation of the main pulmonary artery (MPA) and narrowing of the peripheral pulmonary artery are both characteristic of PAH. Previous studies have shown that MPA dilation is linked to higher pulmonary artery…

Pfizer’s Phase 4 clinical trial (NCT00323297) in pulmonary arterial hypertension (PAH) shows no clinical benefits of adding Revatio (sildenafil) to a stable Tracleer (bosentan) regimen. The study, “Sildenafil dosed concomitantly with bosentan for adult pulmonary arterial hypertension in a randomized controlled trial,” appeared in the…

Diethylcarbamazine, a compound used to fight a tropical parasitic disease, might effectively treat pulmonary hypertension (PH), a Brazilian research team concluded after observing the drug’s effect on mice. Their study, “Diethylcarbamazine: A potential treatment drug for pulmonary hypertension?” appeared in the journal Toxicology and Applied Pharmacology. It found that diethylcarbamazine affected disease processes…