A comparative study of four Bowie-Dick test under the condition of pressure steam sterilizer simulating gas leakage.

Abstract:

:We aimed to understand the evaluation of different Bowie-Dick test (B-D test) on the performance of pressure steam sterilization equipment in the case of simulated gas leakage, and we selected a pulsating vacuum steam sterilizer to set 4 different gas leakage levels: 1.1, 1.3, 1.5, and 1.7 mbar/min during the B-D test phase. In terms of methods, 4 different brands of B-D test kits (devices) were tested at 4 different leakage rates, and a total of 48 experiments were conducted. The results from univariate analysis revealed that there are statistically significant differences in the judgment of test results among different personnel and brands. The results from multivariate logistic regression analysis displayed that the difference between different personnel was statistically significant (χ = 45.34, P < .001); the difference between different products was statistically significant (χ = 129.37, P < .001); and there was no statistically significant difference between different degree of leakage (χ = 6.99, P > .05). Result judgments of brand 1 and brand 2 are susceptible to subjective factors. The judgment of brand 3 is intuitive and consistent with the evaluation result of brand 4. In conclusion, the order of capacity to evaluate air leakage from best to worst is brand 4→brand 3→brand 1→brand 2.

journal_name

Medicine (Baltimore)

journal_title

Medicine

authors

Yu X,Zhang Q,Deng X,Liang J,Hao S,Chen J,Du H

doi

10.1097/MD.0000000000023653

subject

Has Abstract

pub_date

2020-12-11 00:00:00

pages

e23653

issue

50

eissn

0025-7974

issn

1536-5964

pii

00005792-202012110-00131

journal_volume

99

pub_type

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