Effect of a disposable endoscope precleaning kit in the cleaning procedure of gastrointestinal endoscope: A multi-center observational study

Table 1 The test results at all stages for all endoscopes (mean ± SD)

Test method	Endoscopes	Postuse	Postprecleaning	Postmanual cleaning
ATP test (RLU)	Gastroscopes (n = 60)	5313645 ± 3919731	120035 ± 214287a	1567 ± 1152b
	Colonoscopes (n = 48)	1235303 ± 1182027	31293 ± 78392a	1450 ± 1945c
Residual protein test (μg)	Gastroscopes (n = 88)	102.39 ± 58.09	39.08 ± 19.60a	32.04 ± 15.63c
	Colonoscopes (n = 32)	121.87 ± 68.66	42.80 ± 18.53a	30.34 ± 10.42c

^aP < 0.0001 postuse vs postprecleaning.

^bP < 0.0001 postprecleaning vs postmanual cleaning.

^cP < 0.01 postprecleaning vs postmanual cleaning.

ATP: Adenosine triphosphate; RLU: Relative light unit.

Table 2 Comparison of the postuse and postprecleaning adenosine triphosphate and residual protein results (mean ± SD)

Test method	Postuse		Postprecleaning
	Group T (n = 60)1	Group D (n = 54)2	Group T (n = 60)1	Group D (n = 54)2
ATP test (RLU)	3536861 ± 3665062	3465218 ± 3643658	116120 ± 236664	45068 ± 44132a
Residual protein test (μg)	109.01 ± 60.30	106.16 ± 62.95	39.36 ± 17.70	40.78 ± 20.93

^aP < 0.05 group T vs D.

¹Of 30 samples for the adenosine triphosphate test and 30 samples for the residual protein test.

²Of 24 samples for the adenosine triphosphate test and 30 samples for the residual protein test.

ATP: Adenosine triphosphate; RLU: Relative light unit.

Table 3 The adenosine triphosphate and residual protein results after manual cleaning in the different groups (mean ± SD)

Groups		Samples	ATP test (RLU)	Samples	Residual protein test (μg)
T1		24	2141 ± 1913	30	31.27 ± 12.81
Ts	T2	10	2362 ± 1981	10	31.44 ± 14.19
	T3	10	2340 ± 2017	10	29.28 ± 8.46
	T4	10	1795 ± 1406	10	33.67 ± 19.75
	Total	30	2166 ± 1779	30	31.46 ± 14.46
D1		24	756 ± 834	30	30.51 ± 17.95
Ds	D2	10	1083 ± 854	10	28.80 ± 10.64
	D3	10	913 ± 730	10	34.33 ± 12.96
	D4	10	918 ± 956	10	36.18 ± 13.28
	Total	30	971 ± 826	30	34.66 ± 15.50

ATP: Adenosine triphosphate; RLU: Relative light unit.