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Table 1 Summary of scopes and samples tested for Clinical-use and Simulated-use evaluations

From: EVOTECH® endoscope cleaner and reprocessor (ECR) simulated-use and clinical-use evaluation of cleaning efficacy

Site

Colonoscope

Gastroscope

Bronchoscope

Duodenoscope

 

(N = 20)**

(N = 20)**

(N = 15)**

(N = 20)**

Clinical-use Testing:

Surface

    

S1 (insertion tube*)

S2 (control head*)

L1: Suction biopsy channel (umbilical to distal end)

 

[364.5 cm 2 ] 1

[255.7 cm 2 ]

[53.2 (or 58.7) cm 2 ]

[402 cm 2 ]

L2: Air/water channel (umbilical to distal end)

 

 

[377 cm 2 ]

[ 269 (or 254) cm 2 ]

 

[363 cm 2 ]

L3: Auxiliary water channel

   
 

[175.3 cm 2 ]

   

L4 Elevator wire channel

   

    

[43.4 cm 2 ]

Samples collected per endoscope

5

4

3

5

Simulated-use Testing; each scope type tested in triplicate***

Site

Colonoscope

Gastroscope

Bronchoscope

Duodenoscope

 

(N = 3)

Not done

(N = 3)

(N = 3)

Surface

    

S1 (insertion tube)****

 

S2 (control head)****

 

L1: Suction biopsy channel (From umbilical to distal end)

 

 

[358.7 cm 2 ]

 

[53.2 cm 2 ]

[307.5 cm 2 ]

L2: Air/water channel (From umbilical to distal end)

  

 

[345 cm 2 ]

  

[213.9 cm 2 ]

L4 Elevator wire channel

   

    

[34 cm 2 ]

Samples per scope

4

 

3

5

  1. * Surface area sampled was 1 cm2 for each site
  2. ** Clinical use testing: Colonoscope, Gastroscope and Duodenoscope: 15 tested after cleaning only, 5 tested after cleaning and HLD, Bronchoscope: 10 tested after cleaning only, 5 tested after cleaning and HLD
  3. *** Simulated use testing: Colonoscope, Bronchoscope and Duodenoscope: positive and negative controls as well as ECR cleaning was tested for each scope type in triplicate.
  4. **** Surface area inoculated and sampled was 1 cm2 for each site
  5. 1 The calculated surface area was determined using the manufacturer's published lumen diameter and the length of the channel as determined by threading a fishing wire down the channel lumen and measuring the length. Where two values are stated these refer to the two different scope models used for this study.