Table 2.

Data collected for each interruption observed.

Workload	Step of care	Interrupter	Interruption source
Number of healthcare professionals present	Patient admission	Oneself	Human direct interaction
Number of patient present	Drug preparation	Patient	Noise
	Nursing care	Healthcare professional	Phone
	Patient record filling	Authority: Medical Doctor, Chief nurse, Anesthesiologist resident	Alarm
	Patient monitoring	Nurse/Anesthetist nurse	Other
	Patient set-up	Nurse assistant
	Nurse shift	Other caregivers: SB, Regulator
		Other: Non-human interruption

Subject of the task interruption	Duration of the interruption	Type of multitasking	Consequences of the multitasking
Social interaction	< 1 min	Task switching	Resumption of the initial task with no alteration
Seek information	1–5 min	Withholding of the initial task	Alteration of the initial task
Provide information	> 5 min	Transfer the task to another caregiver	Cancellation
Asking for help		Concurrent	Alteration
Logistic			Start over
Other (Supervision, Reminder…)			Resumption lag
			Other