Conditions: Pulmonary Hypertension
Keywords: Pulmonary Arterial Hypertension, PAH
Allocation: NON_RANDOMIZED | Intervention model: SINGLE_GROUP
Enrollment: 44
Healthy volunteers: no

Brief summary:
To assess the safety of sildenafil 20 mg TID orally given to Japanese pulmonary arterial hypertension patients (Part 1 and 2) To assess the efficacy after 12 weeks of treatment of sildenafil 20 mg TID orally given to Japanese pulmonary arterial hypertension patients (Part 1)

Detailed description:

Arms:
arm 1: sildenafil citrate 20 mg TID

Interventions: intervention 1: sildenafil citrate (UK-92,480)
Intervention descriptions: intervention 1: sildenafil citrate (UK-92,480)

Protocol document: