Impact on the ability of healthcare professionals to correctly identify patient-ventilator asynchronies of the simultaneous visualization of estimated muscle pressure curves on the ventilator display: a randomized study (Pmus study)

Table 1 Definitions of the types of asynchronies

Types of asynchronies	Definition
Double-triggering	Two ventilator cycles triggered by a single effort
Ineffective effort	Presence of effort (P_mus) without ventilator triggering
Premature cycling	Inspiratory time too short compared to the patient, defined as cycling to the expiratory phase before peak P_mus
Delayed cycling	Inspiratory time too long in relation to the patient: defined as cycling to the expiratory phase after the end of the effort (P_mus)
Reverse triggering	P_mus follows the controlled (or auto-triggered) cycle with a fixed frequency and delay. May or may not generate double cycle
Reverse triggering with double cycling	P_mus follows the controlled (or auto-triggered) cycle with a fixed frequency and delay. May or may not generate double cycle
Auto-triggering	Nonpatient effort (P_mus) with ventilator triggering

ISSN: 1364-8535