TABLE 3.
ATP, Culture Results, a and Acceptance Rates Obtained From Endoscope Samples Using 2 Different Sampling Techniques
| No. of Endoscopes | ATP (RLU) (95% CI) | Culture (CFU) (95% CI) | Indicator MO | Acceptance Rate | ||
|---|---|---|---|---|---|---|
| 100PHYS | Gastroscopes | 10 | 13 (2–23) | 8 (0–17) | 1/10 | 8/10 |
| ERCP/Echo-endoscopes | 10 | 17 (1–33) | 6 (0–13) | 1/10 | 8/10 | |
| Coloscopes | 10 | 3 (0–8) | 51 (0–164) | 0/10 | 9/10 | |
| Bronchoscopes | 10 | 1 (0–1) | 3 (1–5) | 1/10 b | 8/10 | |
| All endoscopes | 40 | 8 (4–13) | 17 (0–42) c | 3/40 (7.5%) | 33/40 (82.5%) d | |
| 100PHYS+PT | Gastroscopes | 10 | 36 (14–58) | 42 (18–69) | 0/10 | 4/10 |
| ERCP/Echo-endoscopes | 10 | 36 (0–76) | 53 (5–100) | 1/10 | 5/10 | |
| Coloscopes | 10 | 7 (0–19) | 72 (0–158) | 1/10 | 5/10 | |
| Bronchoscopes | 10 | 1 (0–1) | 4 (1–6) | 0/10 | 10/10 | |
| All endoscopes | 40 | 20 (8–31) | 43 (19–66) c | 2/40 (5%) | 24/40 (60%) d |
NOTE. 100PHYS, flushing with 100 mL sterile physiological saline; 100PHYS+PT, flush-brush-flush using 100 mL sterile physiological saline and a PULL THRU brush; RLUs relative light units; CFU, colony-forming units; MO, microorganisms; CI, confidence interval.
a
Culture results were obtained from TSA agars with filter.
b
In 1/10 bronchoscopes Aspergillus fumigatus was found.
c
Statistically significant difference between mean culture yield using 100PHYS and 100PHYS+PT sampling (P<.001).
d
Statistically significant difference between the number of samples classified as (un)acceptable using 100PHYS vs 100PHYS+PT (P=.03).