Efficacy of spray flushing in the reprocessing of flexible endoscopes: A randomized controlled trial

Table 1 Endoscopic working channel cleanliness scale

Working channel findings	Endoscope inspection ratings
Dark colored debris	0 (none): No dark colored debris
	1 (mild): Small dark particles or linear debris in up to 3 locations
	2 (moderate): Small dark particles or debris in > 3 locations or larger debris in 1 location
	3 (severe): Larger dark particles or debris in > 1 location
Light colored debris	0 (none): No light colored/reflective debris
	1 (mild): Small light-colored/reflective particles or residue in up to 3 locations
	2 (moderate): Small light-colored/reflective particles or residue in > 3 locations, or larger debris/residue in 1
	3 (severe): Larger light-colored/reflective particles or debris in > 1 location or present in continuous large
Opaque fluid	0 (none): No opaque fluid
	1 (mild): Up to 5 individual drops of opaque fluid within channel
	2 (moderate): 6 to 10 individual drops of opaque fluid within channel
	3 (severe): Greater than 10 individual drops of opaque fluid or pooling of fluid within channel
Clear fluid	0 (none): No clear fluid
	1 (mild): Up to 5 individual drops of clear fluid within channel
	2 (moderate): 6 to 10 individual drops of clear fluid within channel
	3 (severe): Greater than 10 individual drops of clear fluid or pooling of fluid within channel