N. E. Larche, Mousa S. Moustafa
Pulmonary hypertension (PH) is a progressive disease that is accompanied by a poor prognosis. Pulmonary vasoconstriction is facilitated through multiple pathways and results in increased pulmonary vascular pressure leading to cell proliferation, vascular remodeling, right ventricular hypertrophy/failure, and ultimately death. Until recently, just six medications were approved -all for one subclass of PH. On October 8, 2013, riociguat became the first medication approved for multiple etiologies of PH. Preclinical studies have demonstrated safety and efficacy with significant clinical trials supporting its advancement into phase IV trials. Although long-term safety and efficacy and place in therapy remain to be established, riociguat presents as an exciting new option for the treatment of PH and potentially has additional indications in the near future.
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