Acts via diffusion from alveoli
Relaxes smooth muscle of pulmonary vessels via conversion of GTP to cGMP, which activates a phosphorylatio cascade
Enhances V/Q matching by increasing blood flow to well-ventilated areas of lung
Decreases PVR
Decreases PA pressure
Inhaled nitric oxide
Inhaled corticosteroid
Theophylline
Lung recruitment maneuver
Oxygen therapy
Albuterol
Mechanical ventilation 
Noninvasive ventilation