Table 2 Imaging findings

 Normal

5 (15.6)

23 (46)

0.005

 Congestion

30 (93)

29 (58)

0.0004

 Consolidation

8 (25)

13 (26)

0.919

 Plural effusion

0 (0)

2 (4)

0.252

 Pneumothorax/Hydropneumothorax

1 (3.1)

6 (12)

0.160

 B lines / SLF, mean ± SD

4.6 ± 1.19

4.2±1.33

0.172

 Distance between B lines, mm, mean ± SD

3.6 ± 0.87

4.9 ± 1.14

<0.001

 Normal

1 (3.1)

0 (0)

0.209

 Consolidation

13 (40.6)

50 (100)

<0.001

 Effusion

0 (0)

7 (14)

0.026

 Ground glass opacity

15 (46.9)

0 (0)

<0.001

 Ejection fraction^a, mean ± SD

0.5 ± 0.09

0.5 ± 0.12

0.703

 Valvular affection^a

5 (20.8)

1 (11.1)

0.518

 Pericardial affection^a

4 (16.7)

2 (22.2)

0.712

 A- lung ultrasound pattern

28 (87)

18 (36)

<0.001

 B- lung ultrasound pattern

6 (18.8)

35 (70)

<0.001

 C- lung ultrasound pattern

5 (15.6)

10 (20)

0.617

 Abnormal A line

26 (81.2)

17 (34)

<0.001

 Thick plural line

28 (87.5)

42 (84)

0.662

 Interrupted plural line

14 (43)

17 (34)

0.374

 Smooth plural line

1 (3.1)

9 (18)

0.044

 Alveolar consolidation

21 (65)

25 (50)

0.164

 Plural effusion

7 (21.9)

15 (30)

0.418