肺动脉高压是以异常增高的肺动脉血压为特征的疾病,通常预后较差。西地那非是一种磷酸二酯酶抑制剂,能够扩张肺动脉并降低肺动脉压力。对此Kellum HB等人做了一项相关研究,研究者假设应用西地那 Pulmonary hypertension is a disorder characterized by abnormally elevated pulmonary arterial pressure and usually has a poor prognosis. Sildenafil is a phosphodiesterase inhibitor that dilates pulmonary arteries and reduces pulmonary artery pressure. In this regard, Kellum HB, who made a related study, the researchers hypothesized that the application of sildenafil