Autotriggering and delayed cycling detected by monitoring of diaphragmatic excursion or thickening in time motion mode. Diaphragmatic dome movement (A, B) and diaphragm cyclic thickening (C, D) help detect the different respiratory phases. The diaphragmatic dome moves closer to the probe (upwards) during inspiration and moves away from it during expiration. An autotriggered cycle caused by the ventilator is defined as a pressurization that is not associated with any excursion of the diaphragm (A). Prolonged insufflation is characterized by a prolonged ventilator pressurization, far beyond the end of diaphragm excursion (B). The diaphragm thickens in inspiration and thins out in expiration. An autotriggered cycle initiated by the respirator is recognized as pressurization that is not associated with any diaphragm thickening (C). Prolonged insufflation is characterized by a respirator pressurization prolonged far beyond the end of diaphragm thickening (D). E, expiration; I, inspiration.