(USP 797) IV Room and Sterile Preparations Quiz
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Questions and Answers

Why are spores difficult to destroy with autoclave?

  • They are resistant to high temperatures (correct)
  • They are not affected by heat
  • They require moist heat for destruction
  • They contain a high percentage of water

What is the mechanism of action behind dry heat sterilization on microbial proteins?

  • Hydrolysis
  • Polymerization
  • Denaturation
  • Oxidation (correct)

Why is pasteurization not effective in destroying spores?

  • Spores contain protective proteins
  • Spores have a low water content
  • Spores are resistant to high temperatures (correct)
  • Pasteurization requires moist heat

What characteristic makes spores resistant to destruction with autoclave?

<p>Presence of protective shells (D)</p> Signup and view all the answers

Why does dry heat sterilization require higher temperatures for shorter exposure times?

<p>To achieve oxidation of microbial proteins quickly (B)</p> Signup and view all the answers

Which method would be most effective for destroying spores in solutions and water?

<p>Autoclave with moist heat (A)</p> Signup and view all the answers

Flashcards

Spores

Microbial structures that are incredibly resistant to high temperatures.

Autoclave Sterilization

The process of using high temperatures to kill microorganisms, particularly spores.

Why are spores difficult to destroy by autoclave?

Spores have a protective shell that makes them incredibly resistant to heat. It's like a tiny fortress!

Dry Heat Sterilization

A method of sterilization using high temperatures and dry air.

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How does dry heat sterilization work?

Dry heat sterilization destroys microbes by oxidizing their proteins. This means it breaks down their structure.

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Why is pasteurization ineffective against spores?

Pasteurization uses a temperature range that is not high enough to kill heat-resistant spores. It's designed to kill most harmful bacteria but not spores.

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Study Notes

USP 797 Guidelines

  • Outlines standards for compounding sterile preparations (CSPs) in healthcare settings.
  • Ensures the safety and effectiveness of sterile drug preparations.

Controlled Environments

  • ISO Class 5 Primary Engineering Control:

    • Maintains a highly controlled environment for aseptic compounding.
    • Minimizes airborne particulates to protect CSPs.
  • ISO Class 7 Positive Pressure Buffer Area:

    • Area around the primary engineering control that provides an additional layer of sterility.
    • Ensures airflow is maintained to prevent contamination.
  • ISO Class 8 Positive Pressure Ante Room:

    • Transitional area leading into the cleaner environments.
    • Supports the transfer of materials while minimizing contamination risks.

Risk Levels of Compounding Sterile Preparations (CSPs)

  • Divided into three distinct risk levels according to the likelihood of contamination:
    • Low-risk: Simple manipulations, involving sterile ingredients and no more than three products.
    • Medium-risk: Complex manipulations, pertaining to multiple doses or prolonged compounding processes.
    • High-risk: Involves non-sterile ingredients or environmental conditions posing high contamination risks.

Temperature Conditions

  • Room Temperature: Ranges from 20°C to 25°C.
  • Cold Temperature (Refrigerated): Maintained between 2°C to 8°C.
  • Freezer Temperature: Ranges from -25°C to -10°C for storage.

Drug Administration Routes

  • Fastest to Slowest routes of drug administration:
    • Intravenous (IV)
    • Intramuscular (IM)
    • Subcutaneous (SC)
    • Oral

Sterilization Techniques

  • Sterile pharmaceutical products can be achieved through aseptic technique or terminal sterilization.
  • Autoclave (Steam Sterilization):
    • Uses steam under pressure to eliminate microorganisms.
    • Effective method for ensuring the sterility of equipment and materials.

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Description

Test your knowledge on USP 797 regulations, ISO Class requirements, risk levels of compounding sterile preparations, and drug administration routes. Explore topics like primary engineering controls, temperature requirements for sterile preparations, and the hierarchy of drug administration routes from fastest to slowest.

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