Management of Pulmonary Arterial Hypertension

Pulmonary arterial hypertension (PAH), a rare disease that falls under the larger umbrella of pulmonary hypertension (PH),¹ is defined as increased pulmonary arterial pressure of at least 20 mm Hg at rest.² The arteries in the lung become narrow or blocked, impeding blood flow. This, in turn, increases pulmonary vascular resistance, causing the right side of the heart to work harder to pump