Destruction of microorganisms by the use of gaseous agents is known as:

IGNOU PB Bsc Nsg.Entrance-2026

Applied Microbiology & Infection control

Easy

Appeared in: IGNOU PB Bsc Nsg.Entrance-2026

Explanation

Fumigation is the specific term for a process that uses gaseous agents, fumes, or vapors to destroy microorganisms, insects, or other pests.
This method is often used for decontaminating entire rooms, such as operating theaters, or for sterilizing items that cannot withstand heat, like certain plastics and electronic devices.
Common gaseous agents used for fumigation and sterilization include ethylene oxide, formaldehyde, and hydrogen peroxide vapor.
The key differentiator is the physical state of the agent used; fumigation exclusively uses gases.

Option A: Sanitization is the process of reducing the number of microorganisms on a surface to a level considered safe by public health standards. It does not aim to destroy all microorganisms and is not specific to the use of gaseous agents.
Option B: Disinfection is a broader term for destroying pathogenic organisms. While some gases can be used for disinfection, the term is not exclusive to them and often refers to liquid chemicals or physical methods like UV light. Fumigation is the more precise term for using gas.
Option C: Asepsis refers to the absence of pathogenic microorganisms or the practice of preventing their introduction into a sterile environment. It is about prevention of contamination, not the active destruction of existing microbes with a gaseous agent.

Clinical Relevance

Nursing practice connection: Knowing Methods of Microbial Control helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Understanding the precise terminology for microbial control is critical for nurses to ensure correct infection prevention and control practices are followed, protecting both patients and healthcare workers.
A nurse must know when an item needs sanitizing (e.g., a bed rail), disinfecting (e.g., a blood pressure cuff), or sterilizing (e.g., surgical forceps) to prevent healthcare-associated infections (HAIs).
In some settings, like operating rooms, fumigation with agents like formaldehyde was a practice, though it is now often replaced by other technologies due to safety concerns. Knowledge of these methods is part of a comprehensive understanding of infection control history and principles.

How to Approach the Question

First, identify the key phrases in the question stem: "Destruction of microorganisms" and "use of gaseous agents".
The question is asking for a specific term defined by these two criteria.
Evaluate each option: 'Sanitization' means reducing microbes, not necessarily destroying them all. 'Disinfection' means destroying pathogens but is not limited to gases. 'Asepsis' means preventing contamination.
Consider the term 'Fumigation'. Its definition specifically involves the application of gas, fumes, or vapor for disinfection or pest control.
Compare the options. 'Fumigation' is the most precise and accurate term that fits both key phrases in the question.
Therefore, select Fumigation as the correct answer.

Concept Tested & Keywords

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