The effect of varying inhaled oxygen concentrations of high-flow nasal cannula oxygen therapy during gastroscopy with propofol sedation in elderly patients: a randomized controlled study

Table 4 Sedation-related adverse events

	Group C n = 123	Group H100 n = 123	Group H50 n = 123	P value
Paradoxical response	14(11.4)	2(1.6)^*	2(1.6)^*	P < 0.001
Nausea/vomit	0(0)	0(0)	0(0)	1.000
Reflux	0(0)	0(0)	0(0)	1.000
Airway obstruction	0(0)	0(0)	0(0)	1.000
Choking	14(11.4)	2(1.6)^*	2(1.6)^*	P < 0.001

Values were presented as a number of patients, number (%), or median (Q1, Q3). Paradoxical response: Patients displayed unpredictable movement, overexcitement, and delirium after sedation with propofol. Airway obstruction: Patients had glossoptosis, excessive oropharynx secretion, laryngeal spasm, or bronchospasm. ^*Paradoxical response and ^*Choking were significantly lower in groups H100 and H50, compared to group C

ISSN: 1471-2253