急性呼吸窘迫综合征肺内气体分布不均一性的影像学监测技术进展

Videography effect of RM on the heterogeneity of ventilation in ARDS

急性呼吸窘迫综合征(ARDS)是临床常见的急性呼吸衰竭,大量肺泡塌陷和肺内气体分布不均一是其主要病理生理改变。气体分布不均一性影响机械通气的效果进而影响ARDS的治疗,因此,对气体分布不均一性的评价尤为重要。现有评价气体分布的影像学方法包括数字X线摄影(DR)、电子计算机断层扫描(CT)、肺部超声(LUS)、电阻抗断层成像(EIT),在ARDS患者肺部气体分布不均一性的评价上各有利弊,本文对此进行综述。

Acute respiratory distress syndrome is the most common acute respiratory failure. Massive alveolar collapse and heterogeneity of ventilation are the significant pathophysiology changes. Heterogeneity is an independent risk factor for ARDS. Therefore, it is important to evaluate the heterogeneity of gas distribution. We will be focusing on the recent developments yielded by five techniques： digital radiography; computed tomography（CT）, PET, electrical impedance tomography（EIT）, and ultrasound.