S120 Hyperpolarised 3HE diffusion MRI and multiple breath inert gas washout in patients with asthma: Abstract S120 Table 1.

Abstract

compared to subjects without, have lower lung volumes (upright and supine), a greater airway impedance (seen in FOT at FRC, both upright and supine), and a larger fall in their ERV on lying down. All these differences may be due to the higher BMI, and in particular differences in distribution of fat in subjects with early chronic respiratory failure. However, these obesity differences were not reflected in large differences in the AHI or ODI between the groups.