High-flow nasal oxygen availability for sedation decreases the use of general anesthesia during endoscopic retrograde cholangiopancreatography and endoscopic ultrasound

Table 3 Procedure times by era

Procedure	Era 1	Era 2	Era 3	P value
Combined ERCP/EUS	28.0, 23.0	26.0, 18.3	24.0, 21.3	0.340
ERCP only	30.0, 35.5	29.5, 32.0	29.5, 28.5	0.920
EUS only	25.0, 20.5	24.0, 15.2	19.0, 18.2	0.170
ERCP/EUS under DS	25.0, 18.0	26.0, 17.0	20.0, 18.7	≤ 0.007
ERCP/EUS under GA	40.5, 41.7	39.0, 28.0	30.5, 24.5	(time comparison within each era)

Values are given in medians and interquartile ranges. Time was assessed in minutes from procedure start to finish. There was no significant difference in procedure times between eras, but procedure times were significantly shorter under DS compared to GA within each era. ERCP: Endoscopic retrograde cholangiopancreatography; EUS: Endoscopic ultrasound; DS: Deep sedation; GA: General anesthesia.