The best method of destroying hospital waste is?

Appeared in: VSSC Nursing Officer - 2021

Explanation

Incineration is a high-temperature dry oxidation process that effectively destroys hospital waste.
It significantly reduces the volume (by 80-95%) and weight of the waste, converting it into ash.
This method is ideal for treating wastes that cannot be recycled, reused, or disposed of in a landfill, such as anatomical waste, sharps, and expired medicines.
It ensures the complete destruction of pathogens, rendering the waste non-infectious and unrecognizable.

Option A: Disinfection uses chemicals to kill most pathogens but does not destroy the physical waste item itself. It is mainly suitable for liquid waste or decontaminating surfaces and equipment.
Option B: Pasteurization uses mild heat to kill pathogens, primarily in liquids like milk. The temperature is not high enough to sterilize or destroy solid hospital waste.
Option C: Autoclaving uses steam under pressure to sterilize waste, making it non-infectious. However, it does not destroy the waste or significantly reduce its volume. It is also unsuitable for chemical, cytotoxic, or anatomical waste.

Clinical Relevance

Nursing practice connection: Knowing Biomedical Waste Management Methods helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Proper disposal of hospital waste is a critical component of infection control, preventing the spread of diseases like HIV, Hepatitis B, and C to healthcare workers, patients, and the community.
Nurses are responsible for the correct segregation of waste at the point of generation (e.g., using color-coded bins) to ensure each waste type is treated by the appropriate method.
Improper waste management can lead to environmental pollution and pose significant public health risks.

How to Approach the Question

First, identify the keywords in the question: 'best method' and 'destroying'. 'Destroying' implies not just killing pathogens but also altering the physical form of the waste and reducing its volume.
Evaluate each option based on this primary requirement of 'destruction'.
Consider Disinfection: Does it destroy waste? No, it only kills germs on surfaces or in liquids.
Consider Pasteurization: Does it destroy waste? No, it's a low-heat process for liquids.
Consider Autoclaving: Does it destroy waste? No, it sterilizes with steam but doesn't reduce volume or break down the material.
Consider Incineration: Does it destroy waste? Yes, it burns waste to ash, achieving both sterilization and massive volume reduction.

Concept Tested & Keywords

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E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart B (pp 233-449 of 464) pp. 107-109, 109-111

E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) p. 126-128

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