肺部超声与CT影像评估创伤性急性呼吸窘迫综合征的一致性研究

Consistency study of lung ultrasound and CT imaging in the assessment of traumatic acute respiratory distress syndrome

目的:探讨肺部超声技术在创伤性急性呼吸窘迫综合征(ARDS)患者中的诊断评估价值。方法:将2020年6月-2021年9月期间在常熟市第二人民医院急诊医学科收治的因创伤住院继发ARDS的85例患者纳入本研究,采用床边超声探查患者两侧各区肺部影像,与肺CT影像对照,分析两种方法影像表现的一致性,明确肺部超声评估创伤性ARDS的准确性。结果:肺部超声诊断发现的肺部阳性病灶与肺部CT具有高度一致性,超声手段发现病灶的阳性率为75.2%,而CT检查则为78.7%。肺部超声图像改变与肺部CT影像学特征变化具有高度一致性(κ=0.828,P<0.001),两者在评估肺部病变中差异有统计学意义(P<0.001)。B线间距与CT值呈负相关(r=-0.837,P<0.001),B线间距越短,CT值越高,提示病变越重。肺超声评分(LUS)与氧合指数呈负相关(r=-0.772,P<0.001),LUS评分越高提示肺部病变越重,氧合情况越差,ARDS程度越重。结论:创伤性ARDS患者肺部超声与肺部CT影像有较好的一致性,肺部超声能准确识别其肺部特征性改变,在急危重患者救治时可替代CT进行影像学评估。

Objective:To explore the diagnostic evaluation value of lung ultrasound in patients with traumatic acute respiratory distress syndrome(ARDS).Methods:A total of 85 patients with ARDS secondary to trauma admitted to the Changshu NO.2 People’s Hospital from June 2020 to September 2021 were enrolled.Bedside ultrasound was used to explore the lung images of each area on both sides of the patient,and compared with lung CT images to analyze the consistency of the imaging performance of the two methods,and to clarify the accuracy of lung ultrasound in evaluating traumatic ARDS.Results:The positive lung lesions found in lung ultrasound diagnosis were highly consistent with lung CT.The positive rate of lesions detected by ultrasound was 75.2%,while that of CT examination was 78.7%.The changes of lung ultrasound images were highly consistent with the changes of lung CT imaging features(κ=0.828,P<0.001),and there was a statistical difference between the two in evaluating lung lesions(P<0.001).B-line spacing was negatively correlated with CT value(r=-0.837,P<0.001),the shorter the B-line spacing,the higher the CT value,which indicated the heavier the lesion.The LUS score was negatively correlated with the oxygenation index(r=-0.772,P<0.001).The higher the LUS score,the more severe the lung disease,the worse the oxygenation,and the more severe the degree of ARDS.Conclusion:The lung ultrasound and lung CT images of traumatic ARDS patients have good consistency.Lung ultrasound can accurately identify the characteristic changes of the lungs,and can replace CT for imaging evaluation in the treatment of critically ill patients.