Table 2 Baseline values and difference between left and right lung in supine and right lateral position (RLP) by functional respiratory imaging (FRI)
From: The effect of posture on airflow distribution, airway geometry and air velocity in healthy subjects
Left lung | Right lung | △Left versus right lung | p-value | |||
|---|---|---|---|---|---|---|
Mean | SD | Mean | SD | |||
Supine position | ||||||
Vlobes FRC (L) | 1.819 | 0.445 | 2.127 | 0.425 | right > left | 0.296 |
Vlobes TLC (L) | 3.529 | 0.450 | 3.967 | 0.485 | right > left | 0.177 |
IAD (%) | 48.158 | 0.951 | 51.842 | 0.951 | right > left | < 0.001 |
iVaw (mL) | 8.804 | 1.404 | 9.089 | 1.868 | right > left | 0.311 |
iRaw (kPas/L) | 0.041 | 0.012 | 0.027 | 0.015 | left > right | 0.141 |
Air velocity (m/s) | 1.526 | 0.071 | 1.196 | 0.242 | left > right | 0.035* |
Right lateral position | ||||||
Vlobes FRC (L) | 2.604 | 0.330 | 1.740 | 0.395 | left > right | 0.006* |
Vlobes TLC (L) | 3.669 | 0.400 | 3.649 | 0.665 | left = right | 0.890 |
IAD (%) | 34.5 | 5.18 | 65.5 | 5.81 | right > left | < 0.001 |
iVaw (mL) | 8.619 | 1.782 | 9.887 | 1.924 | right > left | 0.793 |
iRaw (kPas/L) | 0.042 | 0.020 | 0.037 | 0.017 | right > left | 0.693 |
Air velocity (m/s) | 1.235 | 0.097 | 1.422 | 0.272 | right > left | 0.209 |