Ultrasound findings

Frequency and percentage (%)

Normal

11 (21.1%)

Alveolar syndrome

41 (78.8%)

Interstitial syndrome

8 (15.4%)

Alveolo-interstitial syndrome

8 (15.4%)

Pleural syndrome

6 (11.5%)

Pleural irregularity

20 (38.5%)

Average duration in minutes (±standard deviation)

8.5 (±2)