Assessment of early paediatric airway sequelae after using cuffed or uncuffed endotracheal tubes with ultrasound and flexible endoscopy

Figures & data

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Table 1. Relation between change in the subglottic diameter with the incidence of stridor and airway injuries in each group.

		No.	Change in the subglottic diameter		U	p
			Mean ± SD.	Median (Min. – Max.)
Airway injuries	Cuffed
	No	37	0.02 ± 0.10	0.0 (−0.10–0.30)	10.50*	0.014*
	Yes (Mild)	3	0.20 ± 0.10	0.20 (0.10–0.30)
	Un Cuffed
	No	36	0.03 ± 0.06	0.0 (0.0–0.20)	24.00*	0.028*
	Yes (Mild)	4	0.28 ± 0.30	0.20 (0.0–0.70)
Stridor	Cuffed
	No	39	0.03 ± 0.10	0.0 (−0.10–0.30)	–	–
	Yes	1	0.30
	Un Cuffed
	No	37	0.04 ± 0.07	0.0 (0.0–0.20)	29.5	0.192
	Yes	3	0.27 ± 0.38	0.10 (0.0–0.70)

SD: Standard deviation; U: Mann Whitney test.

p: p value for comparing between the different categories. *: Statistically significant at p ≤ 0.05.

Table 2. Inner and outer diameters of the used endotracheal tubes, cooperative analysis.

Tube size	Cuffed (n = 40)	Un cuffed (n = 40)	t	p
Outer diameter
Mean ± SD.	5.42 ± 0.47	6.45 ± 0.51	9.331*	<0.001*
Median (Min. – Max.)	5.60 (5.0–6.30)	6.20 (5.50–7.60)
Inner diameter
Mean ± SD.	3.84 ± 0.36	4.68 ± 0.37	10.224*	<0.001*
Median (Min. – Max.)	4.0 (3.50–4.50)	4.50 (4.0–5.50)

SD: Standard deviation; t: Student t-test.

p: p value for comparing between the two studied groups.

Statistically significant at p ≤ 0.05.

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