A Comparison of Performance of Endotracheal Intubation Using the Levitan FPS Optical Stylet or Lary-Flex Videolaryngoscope in Morbidly Obese Patients

Table 4

Evaluation of intubation conditions data of studied groups.

Group	Parameter	𝑁	Mean	95% CI		Median	Minimum	Maximum	Q1	Q3	SD	SE	𝑃 value Levitan versus Lary-Flex
Levitan	Intubation time	40	8.57	7.72	9.43	8.00	5.00	18.00	7.00	9.50	2.66	0.42	0.000000
	Number of attempts	40	1.08	0.99	1.16	1.00	1.00	2.00	1.00	1.00	0.27	0.04	0.705785
	C/L 1	40	1.75	1.43	2.07	1.00	1.00	4.00	1.00	2.00	1.01	0.16	0.898564
	C/L 2	40	1.00			1.00	1.00	1.00	1.00	1.00	0.00	0.00	1.000000
	K1	40	5.15	4.39	5.91	3.50	3.00	9.00	3.00	7.00	2.38	0.38	0.848359
	K2	40	3.60	3.25	3.95	3.00	3.00	7.00	3.00	4.00	1.08	0.17	0.651942
Lary-Flex	Intubation time	39	5.79	5.40	6.19	6.00	3.00	8.00	5.00	7.00	1.22	0.20
	Number of attempts	39	1.03	0.97	1.08	1.00	1.00	2.00	1.00	1.00	0.16	0.03
	C/L I	39	1.72	1.44	2.00	1.00	1.00	4.00	1.00	2.00	0.86	0.14
	C/L II	39	1.00	—	—	1.00	1.00	1.00	1.00	1.00	0.00	0.00
	K1	39	4.90	4.19	5.60	4.00	3.00	9.00	3.00	7.00	2.17	0.35
	K2	39	3.41	3.16	3.66	3.00	3.00	6.00	3.00	4.00	0.79	0.13

95% CI: confidence interval; Q1: quartile 1; Q3: quartile 3; SD: standard deviation; SE: standard error; C/L 1: evaluation of laryngoscopic view in Cormack-Lehane scale at beginning of intubation: for Levitan group using only laryngoscope, for Lary-Flex group using videolaryngoscope as standard laryngoscope; C/L 2: evaluation of laryngoscopic view using Levitan FPS or looping on monitor of Lary-Flex videolaryngoscope. Intubation conditions were evaluated using Krieg scale K1 in Levitan group using only laryngoscope, in Lary-Flex group using videolaryngoscope as standard laryngoscope and K2 using Levitan FPS and using whole videolaryngoscope set.