raising怎么理解？

Recruitment manoeuvres, similar to those described for atelectasis during anaesthesia (page 251), may be used in patients with ARDS. T ransient, self-limiting, cardiovascular changes47 and/or desaturation are common, but the manoeuvres do improve oxygenation, though this has not yet been proven to translate into improved outcomes. Recent work in an animal model of ARDS found that recruitment manoeuvres dislodged airway mucous into more distal airways,raising the possibility that abnormal sputum clearance during artificial ventilation worsens ARDS.

与麻醉期间描述的针对肺不张的方法类似，肺复张策略（第251页）也可用于ARDS患者。尽管短暂性、自限性的心血管变化和/或氧饱和度下降很常见⁴⁷，但肺复张确实可以改善氧合，然而尚未证明这一治疗可改善预后。最近在ARDS动物模型的研究发现，肺复张可以驱使气道分泌物移至远端气道⁴⁸，提出了(增加了)人工通气期间痰液的异常清除恶化ARDS的可能性

raising怎么理解？提出了(增加了)？谢谢