Can Diaphragm Dysfunction Be Reliably Evaluated with Pocket-Sized Ultrasound Devices in Intensive Care Unit?
Table 2
Diaphragm measurements of the patients with both devices.
SD (mean ± SD) (min-max)
PSD (mean ± SD) (min-max)
ICC
Tidal expiratory thickness (cm)
0.27 ± 0.08
0.29 ± 0.11
(0.13–0.46)
(0.13–0.61)
Tidal inspiratoy thickness (cm)
0.37 ± 0.13
0.38 ± 0.14
(0.19–0.85)
(0.20–0.70)
Maximal inspiratory thickness (cm)
0.47 ± 0.16
0.45 ± 0.12
(0.23–0.68)
(0.24–0.91)
Tidal thickening fraction (%)
33 ± 17
34 ± 14
(3–77)
(10–59)
Maximal thickening fraction, %
69 ± 38
65 ± 31
(8–150)
(20–130)
Tidal diaphragm excursion (cm)
1.76 ± 0.69
1.62 ± 0.70
(0.58–3.30)
(0.50–3.00)
Maximal diaphragm excursion (cm)
2.97 ± 1.18
2.67 ± 0.90
a
b
(1.33–5.40)
(1.30–4.70)
SD: standard deviation; cm: centimeter; min-max: minimum-maximum; there were no significant proportional bias, and there was good agreement between the devices’ measurements (a); interobserver correlation coefficient > 0.9 and ; a: value > 0.05; b: value < 0.05.