Premedication with intranasal dexmedetomidine decreases barbiturate requirement in pediatric patients sedated for magnetic resonance imaging: a retrospective study

Table 3 Vital signs during MRI, discharge times and use of supplemental oxygen

	Group	Dexmedetomidine (DEX)		Thiopental (THIO)		p-value
	Group	n	median (IQR)	n	median (IQR)	p-value
Lowest SpO₂ (%) during MRI	ALL	100	97 (95–97)	100	96 (94–97)	< 0.001
	0–2 years	20	96 (95–97)	24	96 (94–97)	0.863
	2–6 years	50	97 (96–98)	53	95 (94–97)	0.002
	6–11 years	30	97 (96–98)	23	96 (94–97)	0.114
Lowest heart rate (1/min) during MRI	ALL	100	78 (16)	100	92 (12)	< 0.001
	0–2 years	20	97 (11)	24	104 (13)	0.056
	2–6 years	50	77 (12)	53	91 (9)	< 0.001
	6–11 years	30	65 (12)	23	82 (8)	< 0.001
Time from MRI end to discharge (min)	ALL	100	140 (115–169)	100	150 (125–175)	0.15
	0–2 years	20	151 (125–184)	24	144 (123–162)
	2–6 years	50	142 (122–172)	53	152 (131–177)
	6–11 years	30	124 (104–146)	23	139 (114–172)
			n (%)		n (%)
Supplemental oxygen (%)	ALL	100	2 (2)	100	33 (33)	< 0.001
	0–2 years	20	2 (10)	24	9 (38)	0.04
	2–6 years	50	0 (0)	53	19 (36)	< 0.001
	6–11 years	30	0 (0)	23	5 (22)	0.003

Median and IQR reported, except for lowest heart rate, for which mean and SD is shown. Number and percentage of patients receiving supplemental oxygen is shown

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