NORCET 1 - 2020: Why in some Europe countries catgut suture material not used ?

NORCET 1 - 2020

Applied Microbiology & Infection control

Medium

Appeared in: NORCET 1 - 2020

Explanation

Catgut sutures are derived from the intestines of cattle (bovine) or sheep.
This animal origin poses a risk of transmitting Bovine Spongiform Encephalopathy (BSE), or 'mad cow disease'.
BSE is caused by infectious proteins called prions.
The key differentiator is that prions are extremely resistant to conventional sterilization methods, unlike viruses or bacteria, making animal-derived materials a potential vector for this fatal disease.

Option B: Human Immunodeficiency Virus (HIV) is a fragile virus that is transmitted through direct contact with infected bodily fluids. It is effectively destroyed by standard sterilization procedures used for surgical materials.
Option C: Malaria is a parasitic disease caused by Plasmodium and is transmitted exclusively through the bite of infected Anopheles mosquitoes.
Option D: Hepatitis C Virus (HCV) is a bloodborne virus. While it can be transmitted via contaminated medical equipment, it is reliably inactivated by the high-level sterilization processes that all surgical sutures undergo before use.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Suture materials and iatrogenic disease transmission as background academic context rather than a clinical decision trigger.
This question highlights the critical importance of material science and patient safety in surgery. Nurses must be aware of the origins and potential risks of all materials used in patient care.
The move away from catgut to synthetic absorbable sutures (like Vicryl, Monocryl, PDS) is a major step in reducing the risk of iatrogenic (medically-induced) transmission of zoonotic diseases.
What if? If the question asked about a synthetic suture like nylon or polypropylene? The risk of transmitting animal diseases would be zero, as these materials are petroleum-based polymers with no biological components.

How to Approach the Question

First, identify the core subject of the question: 'catgut suture'.
Recall the properties of catgut. The key fact is that it is a 'natural' suture derived from an animal source (cattle or sheep).
Connect the animal origin (bovine) to potential diseases that can be transmitted from that animal to humans. The most famous example from the late 20th century is 'mad cow disease' or BSE.
Evaluate the other options based on their known modes of transmission. HIV and HCV are bloodborne viruses, and malaria is mosquito-borne. Standard sterilization would eliminate the risk from the viruses, and the malaria vector is irrelevant to sutures.
Conclude that the risk of transmitting a bovine disease (BSE) is the most logical and factually correct reason for the ban.

Concept Tested & Keywords

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E6 Nursing Brunner Adult Health 3SA Vol 1 Part 3 p. 126-128

E6 Microbiology Essentials Sastry 4e Part 1 p. 131-133