Diagnostic Value of Pulmonary Ultrasound and Arterial Blood Gas Analysis in Acute Patients with Severe Injuries Complicated by Respiratory Failure-A Retrospective Study

Figures & data

Table 1 Comparison of the Baseline Data Between the Three Groups

Group	n	Age (, Years)	BMI (, kg/m^2)	Mean Arterial Pressure (, mm HG)	Duration of Hospitalization (, Days)	Respiratory Rate (, Times/Min)
Group A	27	45.03±5.89	22.12±1.12	51.78±1.84	31.09±4.35	29.01±4.36
Group B	27	42.29±5.14	22.34±1.28	51.16±1.57	31.14±4.72	28.23±4.83
Group C	27	46.67±5.35	22.31±1.21	51.50±1.64	31.25±4.53	29.49±4.52
t/P value		0.826/>0.05	0.257/>0.05	0.368/>0.05	3.872/>0.05	0.925/>0.05

Abbreviation: BMI; Body mass index.

Table 2 Comparison of the Baseline Data Between the Two Groups

Group	n	Age (, Years)	BMI (, kg/m^2)	Mean Arterial Pressure (, mm HG)	Duration of Hospitalization (, Days)	Respiratory Rate (, Times/Min)
Survival group	65	45.45±5.73	22.42±1.25	51.52±1.59	31.21±4.25	29.18±4.54
Death group	16	44.36±5.66	22.37±1.38	51.63±1.51	31.17±4.47	28.37±4.71
t/P value		0.683/>0.05	0.140/>0.05	0.250/>0.05	3.339/>0.05	0.635/>0.05

Abbreviation: BMI; Body mass index.

Figure 1 Bedside ultrasound. (A-H): Right pleural effusion is the accumulation of fluid in the area between the layers of the pleura around the right lung, pleural effusion is the separation of the walls of the pleural cavity, and the space is filled with fluid, hydropneumothorax is the unusual accumulation of air and fluid in the pleural space and pneumothorax shows significant lung patches, decreased lung movement, and stratosphere symptoms.

Table 3 Time to Diagnose and Treat in the Three Patients’ Group

Group	n	Initial Diagnosis Time	Diagnosis Time	Initial Correct Treatment Time
Group A	27	32±12	62±19	43±12
Group B	27	24±8^a	44±15^a	31±81^a
Group C	27	16±4^ab	36±10^ab	24±6^ab

Notes: Compared with Group A, ^a P<0.05; compared with Group B, ^b P<0.05.

Table 4 Patients’ Diagnostic Rate in Each Examination Method Group

Group	n	Number of Diagnosed Cases	Confirmation Rate (%)
Group A	27	13	48.15
Group B	27	19	70.37
Group C	27	20	74.07

Table 5 LUS Scores and Diaphragmatic Displacement are Compared Between the Two Groups

Group	n	LUS (Score)	Right Diaphragmatic Displacement (Min)	Left Diaphragmatic Displacement (Min)	Right Diaphragmatic Displacement (Days)
Survival group	65	14.03±4.89	18.12±6.12	14.78±5.84	14.09±6.35
Death group	16	19.29±5.14	11.34±6.28	9.16±4.57	8.14±5.72
t-value		3.817	3.950	3.583	3.419
P-value		<0.05	<0.05	<0.05	<0.05

Abbreviation: LUS; Lung ultrasound score.

Table 6 Lung Ultrasonography Prognostic LUS Score and Diaphragm Displacement in Patients with Severe Multiple Injuries Complicated by Respiratory Failure

Marker	AUC	95% CI	Optimal Cut-off Value	Specificity	Sensitivity
LUS score	0.647	0.542~0.719	21.567	0.678	0.887
Right diaphragmatic displacement	0.754	0.683~0.839	14.378	0.935	0.656
Left diaphragmatic displacement	0.768	0.682~0.818	12.467	0.957	0.682
Mean diaphragmatic displacement	0.779	0.712~0.842	10.379	0.982	0.729

Abbreviations: LUS; Lung ultrasound score, AUC; Area under the ROC curve.

Figure 2 ROC curve showing prediction results for various markers.