Recently, sildenafil citrate, a nonselective pulmonary vasodilator, has gained popularity in the treatment of pulmonary hypertension in transplant candidates.

• 近期，使用西地那非（一种非选择性肺血管扩张剂）治疗移植候选人肺动脉高压的方法已经逐渐被人们所接受。