Measuring Outcomes In Patients With Pulmonary Arterial Hypertension Not on Active Treatment (MOTION)

Participants received therapy with riociguat during a 10-week titration phase. The starting dose for riociguat for all patients was 0.5 milligram (mg) three times a day (TID). The dose of riociguat was increased every 2 weeks in 0.5 mg increments to 1.0, 1.5, 2.0, and 2.5 mg until patients reached their individual optimal dose based on their systolic blood pressure and well-being. After reaching their optimal dose, patients then entered a maintenance phase and remained on this dose for an additional 14 weeks. End of treatment was reached at Visit 10 after 24 weeks of treatment with riociguat.