Lung ultrasound for the diagnosis of cystic fibrosis pulmonary exacerbation

BMC Pulmonary Medicine

Table 2 Comparison of LUS and HRCT regarding subpleural opacity/septal thickening

Findings	Subpleural opacity/septal thickening in HRCT			Diagnostic performance
Findings	Positive (N)	Negative (N)	Total (N)	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	DA (%)	AUC (95% CI)	P value
B-line
LUS (N)				88.9	33.3	66.7	66.7	66.7	0.611 (0.397–0.825)	0.310
Positive	16	8	24
Negative	2	4	6
Total	18	12	30

N, Number; LUS, lung ultrasound; HRCT, high-resolution computed tomography; PPV, positive predictive value; NPV, negative predictive value; DA, diagnostic accuracy; AUC, area under the curve; CI, confidence interval

ISSN: 1471-2466