Usage of biological indicators

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I want to know how many biological indicators may use in steam and eto and plasma sterilization and what is the position of biological indicators in the chambers

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Posted by shoeb (pakistan) (Questions: 1, Answers: 1)
Asked on February 10, 2020 1:26 pm
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In most of Europe we don’t use BI’s since we use parametric release. I am sorry, therefore I can’t answer this question for you

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Posted by oussie69 (The Netherlands) (Questions: 0, Answers: 1)
Answered on February 10, 2020 3:12 pm
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In my country (Poland) we use BI. I used them in my CSSD once a month in steam sterilizer, and put them into each basket, ( packed first in a packaging material together with the chemical indicator). The manager of CSSD is responsible for control system and determine the frequency of using the BI and other indicators. We also use BI after each break-down of sterilizer.
For plasma and Eto I need BI for each load and put them into each basket.
But we can`t use BI ( for steam) if we can use the parametric release. It is possible to use both systems.

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Posted by Teresa Salinska (Poland) (Questions: 0, Answers: 2)
Answered on February 10, 2020 6:30 pm
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Hi Shoeb,

Some of the thoughts that come to mind are:

1) Do you have a national CSSD standard that you follow in Pakistan?
If yes, What does the standard say?

2) What does your Manufacturer say?
We have to take into consideration whatever is recommended by the Manufacturer of the said steriliser.

Depending on which part of the world influences you, We will have different practices.

For example
The Americans are big on biological indicators. Some do it everyday, may be also once every shift.

The Europeans are not necessarily fans of the this concept. They rely more on Parametric release.

I work in New Zealand. We follow AS/NZS 4187:2014 which is greatly influenced by various European and ISO standards.

For Steam Sterilisation:
Biological incubation is optional for regular monitoring, though recommended as best practice. In NZ, it is mandatory to include biological indicators while processing implants through steam sterilisation. If used, the indicator vial shall be placed just above the drain. The drain is the cold spot and hence needs to be monitored/challenged.

For Hydrogen Peroxide (Plasma / VHP):
In NZ, it is mandatory to use biological monitoring at least once a week. Depending on the manufacturer’s instructions, these indicator vials are placed in the recommended locations.

For ETO sterilisation:
In NZ, we have to use BIs in every load of ETO sterilisation. Also, depending on the validation studies, the manufacturer will recommend whether one vial is enough or whether multiple vials should be used in multiple locations.

Up until a few years ago, the process of biological incubation was very time consuming. It would take 24 hours for the results to be seen. This made it impractical for regular use. Hence, the process of parametric release was so popular.
However, this is no longer the case. Biological incubation results can be recorded in 24 minutes.

The process of sterilisation can be monitored by 3 methods, viz, Physical, Chemical & Biological. When used in combination, all the 3 methods complement each other.

Dear Shoeb, I hope your questions have been answered.
Always do your best to follow your local standards/guidelines.

I take this opportunity to wish you the very best in your career in Sterile Sciences.

Kind Regards
Ravi Nayak

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Posted by Ravi Nayak (New Zealand) (Questions: 1, Answers: 14)
Answered on February 21, 2020 10:47 pm
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Thanks a lot to all

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Posted by shoeb (pakistan) (Questions: 1, Answers: 1)
Answered on March 18, 2020 12:36 pm
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