PH with COPD: Is Sildenafil an Effective Treatment Option?
by Phyllis Hanlon, Contributing Writer All of the 14 targeted therapies for pulmonary hypertension (PH) are approved for use in patients with World Health Organization (WHO) Group 1 PH (pulmonary arterial hypertension, or PAH), with one therapy also approved for use in patients with inoperable or recurrent WHO Group 4 PH (chronic thromboembolic pulmonary hypertension,