Clinical Trials Study
Copyright ©The Author(s) 2020.
World J Gastroenterol. Nov 21, 2020; 26(43): 6867-6879
Published online Nov 21, 2020. doi: 10.3748/wjg.v26.i43.6867
Table 1 Baseline characteristics of patients, procedure time and total propofol dosage

WNJT group (n = 144)
Nasal cannula group (n = 144)
P value
Age (yr)53 (40, 60)55 (41, 60)0.537
Gender (M/F)43/10146/980.702
Body mass index (kg/m2)23 (21,24)22 (21,24)0.086
ASA physical classification (1/2)(32/112)(41/103)0.223
Baseline SpO2 (%)98 (97, 99)98 (97, 98)0.061
Procedure times (min)5.0 (4.4, 5.2)4.8 (4.5, 5.0)0.002
Total propofol dosages (mg)160 (140, 188)140 (120, 160)0.000
Table 2 Hypoxemia and lowest pulse oxygen saturation during the gastroscopy, and interventions related to hypoxemia and adverse events

WNJT group (n = 144)
Nasal cannula group (n = 144)
P value
Total occurrence of hypoxemia3 (2.1)21 (14.6)0.000
Hypoxemia2 (1.4)19 (13.2)0.000
Severe hypoxemia1 (0.7)2 (1.4)1.000
Lowest SpO298 (97, 99)96 (93, 98)0.000
Airway opening maneuvers4 (2.8)36 (25)0.000
Facemask ventilation0 (0)4 (2.8)0.131
Body movement8 (5.6)9 (6.3)0.803
Cough10 (6.9)11 (7.6)0.821
Epistaxis (0/1/2/3)0/7/0/0 (4.9)0 (0)0.022
Sore throat2 (1.4)3 (2.1)1.000
Table 3 Satisfactions of physicians, anesthetists and patients

WNJT group (n = 144)
Nasal cannula group (n = 144)
P value
Good
Fair
Poor
Good
Fair
Poor
Physicians 143 (99.3)1 (0.7)0139 (96.5)4 (2.8)1 (0.7)0.214
Anesthetists140 (97.2)4 (2.8)0134 (93.1)8 (5.6)2 (1.4)0.196
Patients142 (98.6)2 (1.4)0144 (100)000.498