Fig. 17
From: Ultrasound and non-ultrasound imaging techniques in the assessment of diaphragmatic dysfunction
Reproduced with permission from Elsevier: Vivier et al. Chest 2019;155(6):1131–9
Right and left hemidiaphragm excursion and thickening in more than 150 patients who succeeded or failed extubation from mechanical ventilation. Excursion (upper panels) of the right (a) and left (b) hemidiaphragms. There was no difference in hemidiaphragm excursions between patients whose extubation succeeded and those whose extubation failed. Negative values reflect paradoxical movements (passive ascent) associated with complete hemidiaphragm paralysis. Thickening fraction (lower panels) of the right (c) and left (d) hemidiaphragms. There was no difference in hemidiaphragm diaphragm thickening between patients whose extubation succeeded and those whose extubation failed. Negative values reflect paradoxical movements (passive thinning) associated with complete hemidiaphragm paralysis. Hemidiaphragm excursions and thickening are presented by a box plot representation with median, 25th and 75th percentiles, and adjacent values.