Maximum rate of change in oesophageal pressure assessed from unoccluded breaths: an option where mouth occlusion pressure is impractical
CH Hamnegard, MI Polkey, D Kyroussis, GH Mills, M Green, B Bake, J Moxham
European Respiratory Journal 1998 12: 693-697; DOI: 10.1183/09031936.98.12030693