Conventional versus video-assisted laryngoscopy for perioperative endotracheal intubation (COVALENT) - a randomized, controlled multicenter trial

Table 1 Schedule of activities

	Screening	randomization	intervention	post-intervention	follow-up
	up to 14 days prior to intervention	day 0 briefly before intervention	day 0	day 0 immediately after intervention	day 0 2 h (± 30 min) after extubation
visit	V1	V2	V3	V4	V5
inclusion criteria	X
exclusion criteria	X
informed consent	X
registration	X
sociodemographics, medical history	X
acute medical concerns by responsible anaesthetist preventing randomization		X
randomization		X
experience of anaesthetist			X
upper lip bite test, Mallampati score	X		(X)^a
pre-oxygenation (> 80% etO₂), relaxation (TOF = 0)			X
intubation (incl. number of attempts and time to intubation)			X
Cormack-Lehane grade			X
switch of device or provider			X
vital signs			X
injuries			X
Mayo High Performance Teamwork scale				X
NASA-TLX				X
sore throat, coughing, hoarseness					X

^a if these parameters cannot be obtained from the patient’s chart, they will be obtained by the observer prior to the intervention

ISSN: 1471-2253