Of those patients, 32 were selected to receive inhaled iloprost (a prostacyclin analog) along with bosentan, while the remainder took a placebo and bosentan.

• 在这些病人中，32例采用吸入性伊洛前列素（一种前列腺幻素的类似物）和波生坦的联合用药，其余病人采用安慰剂和波生坦治疗。