Diaphragmatic regional displacement assessed by ultrasound and correlated to subphrenic organ movement in the critically ill patients-an observational study

Abstract

Introduction: The objectives of the study are to identify the most reliably imaged regions of the diaphragm, to evaluate the correlation of movement between different parts of each hemidiaphragm, and to assess the agreement between liver or spleen displacement and movement of the ipsilateral hemidiaphragm. Methods: Images of the diaphragm, liver, and spleen were obtained using 2-dimensional ultrasound. Acceptable agreement between regions of the diaphragm, liver, and spleen was defined as an absence of fixed or proportional bias using Deming regression analysis and limits of agreement of 2 SDs of the difference less than 30% of the mean value. Results: We included 90 critically ill patients...