Fig. 1

Time course of the diaphragm and intercostal muscle thickness. Time course for the measurement of the diaphragm and intercostal muscle thickness over the first 7 days of mechanical ventilation. The horizontal line represents the time from admission to the intensive care unit (ICU), and the vertical line represents the change in diaphragm and intercostal muscle thickness. Solid lines represent the changes in diaphragm muscle thickness, and dotted lines represent the changes in intercostal muscle thickness. Data are expressed as means and 95% confidence intervals