Objective To explore the diagnostic value of bedside ultrasound on patients with severe multiple chest injury in intensive care unit（ICU）.Methods A total of 120 patients with severe multiple injuries in ICU of our hospital were taken as the research objects.All the patients were detected by bedside ultrasound and X-ray within 2 h after ultrasound examination.The diagnostic results of CT examination or surgical exploration were taken as gold standard

the diagnostic efficiency of bedside ultrasound and X-ray were observed and compared.Multivariate regression analysis was performed on the influencing factor of bedside ultrasound.Results One hundred and twenty patients were confirmed as 60 severe multiple chest injuries by CT examination or surgical exploration

including 28 cases of pleural effusion

12 cases of pulmonary contusion

10 cases of pneumothorax

7 cases of pericardial effusion

3 cases of traumatic diaphragmatic hemia.The diagnostic coincidence rate of bedside ultrasound and X-ray on pleural effusion（92.86% vs.71.43%）

pulmonary contusion（83.33% vs.50.00%）

pneumothorax（90.00% vs.50.00%）

pericardial effusion（100% vs.14.29%） were significantly higher than those of X-ray（all P<0.05）.The sensitivity

specificity

and accuracy of bedside ultrasound for severe chest trauma were 90.00%

100%

and 95.00%

respectively.Compared with X-rays（76.67%

95.00%

and 85.8 3 %）

there were statistical differences in sensitivity and accuracy（both P<0.05）.Clinic time>l h

multiple organ injuries and work experience of ICU physician>5 years were independent factors that could affect the diagnostic efficiency of bedside ultrasound diagnosis（all P<0.05）.Conclusion Bedside ultrasound can quickly and accurately evaluate patients with severe multiple chest injuries in ICU

shorten the rescue time and improve rescue timeliness.