Table 1 Characteristics of the population of nurse trainees involved in the lung ultrasound training program

Age– years (median, [IQR])

26.0 [24.0–28.0]

Male sex– n (%)

4 (18)

Work experience– years (median, [IQR])

2.0 [1.0–4.0]

Activities in critical care fields– n (%)

 • Intensive Care Unit

 • Emergency Department

 • Pre-hospital medicine

 • Others (respiratory, cardiac intensive care)

 • None

3 (13.6)

1 (4.6)

0 (0.0)

4 (18.2)

14 (63.6)

Ultrasound machine availability in trainee’s unit/ward– n (%)

 • Available and dedicated to the unit

 • Available but shared with another unit/ward

 • Not available

14 (63.6)

2 (9.1)

6 (27.3)

Previous trainee’s use of ultrasound– n (%)

 • Systematic

 • Occasional

 • No use

1 (4.5)

8 (36.4)

13 (59.1)

 Previous trainee's training in ultrasound - n (%)

 • Yes

 • No

1 (4.5)

21 (95.5)

Previous trainee’s training in lung ultrasound– n (%)

 • Yes

 • No

0 (0.0)

22 (100)

Use of lung ultrasound in trainee’s unit/ward– n (%):

1. By doctors:

 • Frequent

 • Occasional

 • No use

7 (31.8)

8 (36.4)

7 (31.8)

2. By nurses:

 • Frequent

 • Occasional

 • No use

0 (0.0)

2 (9.1)

20 (90.9)