Table 6 LUS findings between SRV positive bronchiolitis vs SRV negative bronchiolitis

Normal lung sliding with horizontal artifacts (A-lines), and vertical artifacts (B-lines) in limited number or absent in the anterolateral area of the lung

27/33

37/73

(82 %)

(51 %)

Diffused and dishomogeneous interstitial syndrome with confluent, multiple B lines and spared areas in the anterolateral area of the lung

5/33

30/73

(15 %)

(41 %)

Diffused and dishomogeneous interstitial syndrome and/or subpleural lung consolidations in the anterolateral area of the lung

1/33

6/73

(3 %)

(8 %)

Less than 6 bilaterally involved intercostal spaces in the posterior and paravertebral area of the lung

22/33

42/73

(67 %)

(58 %)

6 to 12 bilaterally involved intercostal spaces in the posterior and paravertebral area of the lung

9/33

24/73

(27 %)

(33 %)

Up to 12 bilaterally involved intercostal spaces, in the posterior and paravertebral area of the lung

2/33

7/73

(6 %)

(9 %)

No presence of subpleural lung consolidations in the posterior and paravertebral area of the lung

22/33

36/73

(67 %)

(49 %)

Subcentimetersubpleural lung consolidations in the posterior and paravertebral area of the lung

7/33

25/73

(21 %)

(34 %)

Subpleural lung consolidation of 1 cm or more in the posterior and paravertebral area of the lung

4/33

12/73

(12 %)

(17 %)

No interstitial syndrome ultrasound signs in the posterior and paravertebral area of the lung

8/33

14/73

(24 %)

(19 %)

Focal, multiple B-lines in the posterior and paravertebral area of the lung

20/33

37/73

(61 %)

(51 %)

Confluent, multiple B lines in the posterior and paravertebral area of the lung

5/33

22/73

(15 %)

(30 %)

Only posterior area

23/33

33/73

(70 %)

(45 %)

Only anterior area

3/33

3/73

(9 %)

(4 %)

Both anterior and posterior area

3/33

32/72

(9 %)

(44 %)

No alteration

4/33

5/72

(12 %)

(7 %)