Den gennemsnitlige ændring fra baseline i pulmonal vaskulær modstand (PVR) var - 122 dyn. sek/ cm5, for sildenafil 20 mg 3 gange dagligt.
The mean change from baseline in pulmonary vascular resistance (PVR) was – 122 dyne. sec/ cm5 for sildenafil 20 mg three times a day.