High-Flow Nasal Cannula and Mandibular Advancement Bite Block Decrease Hypoxic Events during Sedative Esophagogastroduodenoscopy: A Randomized Clinical Trial
Table 1
Patient and endoscopic exam characteristics.
Groups new
standard (n=51)
HFNC (n=50)
MA bite block (n=51)
Age (years)
51.56 ± 12.52
46.65 ± 15.37
51.07 ± 11.96
0.130
Sex (Male n/ Female n)
22 / 29
19 / 31
19 / 32
0.804
ASA (I n/ II n)
22 / 29
7 / 43
20 / 31
0.003
Weight (kg)
63.89 ± 11.85
62.46 ± 13.20
61.26 ± 14.56
0.605
Height (cm)
162.57 ± 8.84
163.44 ± 6.74
161.61 ± 8.30
0.522
BMI (kg/m2)
23.44 ± 3.58
22.51 ± 4.19
22.90 ± 3.58
0.466
STOP-Bang risk (low n/mod n/high n)
21/17/13
26/13/11
32/12/6
0.208
Mean time to reach MOAA/S < 2
1.77 ± 0.76
2.12 ± 1.54
2.04 ± 1.02
0.279
Exam time
5.83 ± 2.33
5.96 ± 1.69
6.47 ± 2.12
0.263
BIS
75.29 ± 14.27
78.08 ± 14.84
75.66 ± 16.99
0.616
Propofol TCI Ce
1.05 ± 0.41
1.45 ± 0.51
1.29 ± 0.59
0.001
Data are represented as mean ± standard deviation. ASA: American Society of Anesthesiologists classification, BMI: body mass index, STOP-Bang: STOP-Bang questionnaire; MOAA/S: Modified Observer’s Assessment of Alertness/Sedation; BIS: Bispectral index; Propofol TCI Ce: effect site concentration for propofol target controlled infusion; HFNC: high-flow nasal cannula; MA: mandibular advancement.
