NORCET 2 -2021 (Shift-2)
Medical Surgical Nursing
Easy
Which is the example of Monofilament suture
Appeared in: NORCET 2 -2021 (Shift-2)
Explanation
- Polydioxanone (PDS) is a synthetic absorbable suture constructed as a single strand, which is the definition of a monofilament suture.
- Its single-strand structure allows it to pass smoothly through tissues, causing less trauma.
- Monofilament sutures like Polydioxanone have a lower risk of harboring bacteria compared to braided sutures, making them suitable for closing wounds where infection is a concern.
Why Other Options Were Wrong
- Option A: Silk is a natural suture material that is multifilament (braided), not monofilament. Its braided structure gives it higher capillarity, which can wick fluids and potentially increase infection risk.
- Option C: Polyglactin is a synthetic absorbable suture that is multifilament (braided). It is the generic name for Vicryl.
- Option D: Vicryl is the trade name for Polyglactin 910. It is a synthetic, absorbable, multifilament (braided) suture, not a monofilament.
Related Visual
- Visual 1: Diagram - A microscopic comparison showing the smooth, single strand of a monofilament suture next to the braided structure of a multifilament suture. This helps visualize why infection risk and tissue drag differ.
- Visual 2: Table - A chart listing common suture materials (e.g., PDS, Vicryl, Silk, Prolene) and classifying them by structure (monofilament/multifilament), material (natural/synthetic), and absorption profile (absorbable/non-absorbable).
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of surgical suture materials, specifically identifying monofilament sutures as background academic context rather than a clinical decision trigger.
- Choosing the right suture type is critical for optimal wound healing. Monofilament sutures are often preferred for skin closure, especially in cosmetic surgery, due to their smooth passage and lower tissue reaction.
- In potentially contaminated wounds, a monofilament suture is a safer choice because its structure is less likely to harbor bacteria compared to a braided suture.
- What if? If a surgeon needed to close a deep fascial layer that is under high tension and requires excellent knot security, they might prefer a multifilament (braided) suture like Vicryl or Ethibond, despite the slightly higher tissue reactivity, because its structure provides better knot grip.
How to Approach the Question
- First, identify the key term in the question: 'Monofilament suture'.
- Recall the definition of a monofilament suture: a single, solid strand of material.
- Evaluate each option based on this definition.
- Eliminate options that are known to be multifilament (braided), such as Silk and Vicryl/Polyglactin.
- Identify Polydioxanone (PDS) as a well-known example of a monofilament suture.
Concept Tested & Keywords
- Concept Tested: Classification of surgical suture materials, specifically identifying monofilament sutures.
- Stem keywords: suture, monofilament
- Lead-in keywords: example of
Question ID
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Practise the full NORCET 2 -2021 (Shift-2)
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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