A Patient Flow Analysis: Identification of Process Inefficiencies and Workflow Metrics at an Ambulatory Endoscopy Unit

Table 2

Data regarding endoscopy workflow process measures.

Category	Outcome		Time, min, mean	95% CI for mean, min
Total duration in preparation room	Duration between registration and time transferred out of preparation/recovery room	116	71.21	63.95–78.48
Preendoscopy time	Duration from patient entry into endoscopy room until endoscope insertion	92	14.22	12.17–16.28
Procedure time (duration from endoscope insertion until removal)	Esophagogastroduodenoscopy	52	8.11	6.64–9.57
	Colonoscopy	45	34.24	29.51–38.98
	Double procedure (esophagogastroduodenoscopy + colonoscopy)	18	39.13	30.59–47.66
	Flexible sigmoidoscopy	11	9.02	7.00–11.05
	Total	126	19.27	16.36–22.17
Total duration in endoscopy room (duration between patient entry and exit from room)	Esophagogastroduodenoscopy	46	31.47	26.82–36.12
	Colonoscopy	52	52.93	48.11–57.75
	Double procedure (esophagogastroduodenoscopy + colonoscopy)	12	66.88	58.64–75.12
	Flexible sigmoidoscopy	19	30.47	25.51–35.43
	Total	129.00	45.44	42.39–48.48
Room turnover time	Duration between patient exit and entry of subsequent patient	93	7.9	7.66–8.14
Recovery time	Duration from patient transfer into recovery room to exit from hospital	98	56.27	53.9–58.64
Total duration in endoscopy unit	Duration between time of registration and time of exit from hospital, h	109	2.73	2.55–2.90