Which is the example of Monofilament suture

Appeared in: NORCET 2 -2021 (Shift-2)

Explanation

Polydioxanone, often known by the brand name PDS, is a synthetic suture material constructed as a single, solid strand.
This monofilament structure gives it a smooth surface, which allows it to pass through delicate tissues with minimal friction and trauma.
A key advantage of its single-strand design is a lower risk of surgical site infections, as there are no interstices or braids where bacteria can be harbored.
It is an absorbable suture, meaning the body breaks it down over time, making it suitable for deep tissue layers where suture removal is not feasible.

Option A: Silk is a classic example of a multifilament suture. It is made of natural protein fibers that are braided together.
Option C: Polyglactin is a synthetic, absorbable suture that is braided, classifying it as a multifilament suture.
Option D: Vicryl is the trade name for Polyglactin 910. Therefore, like Polyglactin, it is a synthetic, absorbable, multifilament (braided) suture.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Classification of surgical sutures as background academic context rather than a clinical decision trigger.
Choosing between monofilament and multifilament sutures is a critical decision in surgery. Monofilaments like Polydioxanone are often preferred in plastic surgery or for closing skin layers to achieve a better cosmetic outcome and reduce infection risk.
In potentially contaminated wounds, a monofilament suture is the preferred choice to minimize the risk of developing a surgical site infection.
Multifilament sutures like Silk or Vicryl are favored in areas where knot security is paramount, such as ligating blood vessels, because their braided texture holds knots more securely than the smooth surface of a monofilament.

How to Approach the Question

First, identify the key term in the question: 'Monofilament suture'.
Define 'monofilament' in the context of sutures. It means the suture is made of a single, solid strand of material.
Next, evaluate each option based on this definition.
Recall or deduce the structure of each suture type: Silk is braided (multifilament). Polydioxanone (PDS) is a single strand (monofilament). Polyglactin and its brand name, Vicryl, are braided (multifilament).
Based on this analysis, eliminate the multifilament options (Silk, Polyglactin, Vicryl).
The only remaining option, Polydioxanone, correctly fits the definition of a monofilament suture.

Concept Tested & Keywords

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E6 Gynecology Williams p. 430-440

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 1 p. 81-83

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Attempt every question from this paper in a timed mock, then review the full solution for each one.