Nylon Suture Degradation Study
65 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which type of coating serves to increase pliability, reduce tissue drag, and improve tying characteristics?

  • Water-soluble coating
  • Proprietary silicon coating
  • Water-insoluble coating (correct)
  • Antibiotic coating

    • What is the purpose of the water-soluble coating on polyglycolic acid suture (Dexon II)?

  • Enhance tissue drag
  • Reduce knot security
  • Improve pliability
  • Facilitate knot formation (correct)

    • How do water-insoluble coatings affect knot security compared to uncoated suture?

  • Increase knot security
  • Have no effect on knot security
  • Make tissue drag worse
  • Reduce knot security (correct)

    • What is the effect of an alkaline environment on sutures with a glycolide component?

    <p>They degrade rapidly</p> Signup and view all the answers

    What happens to sutures with a dioxanone component in an acid environment?

    <p>They lose tensile strength rapidly</p> Signup and view all the answers

    How does polypropylene, a nonabsorbable suture, react in acidic conditions?

    <p>It remains unaffected</p> Signup and view all the answers

    How does nylon suture, generally non-absorbable, react in acidic conditions?

    <p>It loses tensile strength</p> Signup and view all the answers

    In what conditions does polyglactin 910 (Vicryl) have the least reduction in tensile strength?

    <p>Neutral solution</p> Signup and view all the answers

    How does polyglactin 910 (Vicryl) behave in alkaline solutions?

    <p>It loses tensile strength rapidly</p> Signup and view all the answers

    What impact do bodily fluids like pancreatic secretions have on suture degradation?

    <p>Variety of impacts</p> Signup and view all the answers

    How does exposure to infected milk impact suture strength?

    <p>Reduces strength</p> Signup and view all the answers

    True or False: Catgut suture is uniform in diameter throughout its length.

    Signup and view all the answers

    True or False: Catgut undergoes additional curing processes with chromium trioxide salts which decreases collagen cross-linkages.

    Signup and view all the answers

    How does the presence of synovial fluid impact the rate of suture absorption?

    <p>Increases absorption rate</p> Signup and view all the answers

    How does the rate of application and amount of strain affect the ability of suture to withstand tensile load over time?

    <p>Increases ability to withstand load</p> Signup and view all the answers

    Which suture material is suitable for ligation of small vessels or suturing rapidly healing tissues?

    <p>Catgut</p> Signup and view all the answers

    What is the approximate time it takes for Polyglycolic acid to be completely absorbed?

    <p>60 to 90 days</p> Signup and view all the answers

    Which suture type had the highest breaking stress when compared against other materials?

    <p>Polyglycolic acid</p> Signup and view all the answers

    Which suture material is coated with calcium stearate and polyglactic acid to improve handling characteristics?

    <p>Polyglactin 910</p> Signup and view all the answers

    In what period does Poliglecaprone 25 lose approximately 50% of its strength after implantation in rat subcutis?

    <p>1 week</p> Signup and view all the answers

    Which suture material has lesser knot security when compared to chromic gut?

    <p>Polyglytone 6211</p> Signup and view all the answers

    What is a significant benefit of using triclosan impregnated sutures in human surgery according to the text?

    <p>Decrease in rate of incisional infection</p> Signup and view all the answers

    How are natural absorbable sutures like catgut primarily absorbed in living tissue?

    <p>Enzymatic actions of cellular proteases and collagenases</p> Signup and view all the answers

    Which compound mentioned in the text is NOT used to coat sutures for improving wound healing?

    <p>Acetic acid</p> Signup and view all the answers

    What is a significant factor affecting the rate of suture absorption mentioned in the text?

    <p>The biochemical environment</p> Signup and view all the answers

    In the study mentioned, how did polydioxanone (PDS) suture behave when exposed to sterile urine?

    <p>Lost all strength in 3 days</p> Signup and view all the answers

    What role do acid phosphatase and leucine aminopeptidase play in the enzymatic absorption of catgut suture according to the text?

    <p>They play major enzymatic roles</p> Signup and view all the answers

    What happens to polyglycolic acid (Dexon) suture when exposed to Proteus-infected urine?

    <p>Lost all strength after 1 day</p> Signup and view all the answers

    'Absorbable suture' is commonly defined as suture that loses most of its tensile strength within how many days in living mammalian tissue?

    <p>~60 to 90 days</p> Signup and view all the answers

    'Absorbable suture' as defined by USP is absorbed by what type of tissue according to the text?

    <p>'Living, mammalian tissue'</p> Signup and view all the answers

    In what way are synthetic absorbable sutures primarily absorbed according to the text?

    <p>Hydrolysis by random main-chain scission of ester linkages</p> Signup and view all the answers

    What factors can result in considerable variation in the rate of suture absorption according to the text?

    <p>Material, coatings, size, and biochemical environment</p> Signup and view all the answers

    How did catgut suture behave when exposed to infected urine compared to sterile urine?

    <p>Showed increased absorption rates in infected urine</p> Signup and view all the answers

    What is a potential issue with using nylon sutures for implantation?

    <p>Susceptibility to degradation</p> Signup and view all the answers

    Why is caution advised when using nylon leader line in veterinary orthopedic repair?

    <p>It is prone to elongation</p> Signup and view all the answers

    Which sterilization technique results in an increase in elongation of monofilament nylon leader line?

    <p>Steam sterilization</p> Signup and view all the answers

    Why is polymerized caprolactam suture not recommended for implantation in tissues?

    <p>Can cause sinus formation</p> Signup and view all the answers

    Which characteristic makes Ethibond Excel a preferred suture for musculoskeletal surgery?

    <p>Polybutylate coating for handling qualities</p> Signup and view all the answers

    What is the composition of Ti-Cron sutures?

    <p>Long-chain, high-molecular-weight, linear polyester fibers</p> Signup and view all the answers

    How do steam sterilization and ethylene oxide sterilization affect the mechanical properties of fishing line differently?

    <p>Steam sterilization increases elongation, while ethylene oxide sterilization does not affect ultimate strength.</p> Signup and view all the answers

    What distinguishes leader line from regular fishing line?

    <p>Material composition</p> Signup and view all the answers

    What makes Surgidac a versatile suture choice?

    <p>Available as monofilament or multifilament with different coatings</p> Signup and view all the answers

    Why is caution advised when using nylon leader line as an implantable biomaterial?

    <p>It loses tensile strength after implantation due to hydration and degradation</p> Signup and view all the answers

    How does nylon leader line differ from regular fishing line in its intended use?

    <p>Nylon leader line is primarily used in saltwater fishing for larger fish with strong jaws and sharp teeth</p> Signup and view all the answers

    Which suture material has better handling and less memory compared to polyglyconate?

    <p>Polydioxanone</p> Signup and view all the answers

    What is the approximate strength retention of polyglyconate after 4 to 5 weeks?

    <p>50%</p> Signup and view all the answers

    Which suture material is slowly degraded by hydration even though it's considered nonabsorbable?

    <p>Silk</p> Signup and view all the answers

    Among silk, nylon, polyester, and gut, which suture material has the highest energy to break point?

    <p>Nylon</p> Signup and view all the answers

    Which suture material has the highest knot strength among polyglyconate, polydioxanone, and polypropylene?

    <p>Polyglyconate</p> Signup and view all the answers

    What is the monofilament absorbable suture composed of glycolide, dioxanone, and trimethylene carbonate?

    <p>Glycomer 631</p> Signup and view all the answers

    'Silk should be avoided in any application where excessive inflammation is undesirable' - Which characteristic of silk supports this statement?

    <p>'Silk having a relatively high tissue reactivity'</p> Signup and view all the answers

    'Silk is used frequently for ligation of large vessels' - Why does silk have this specific application according to the text?

    <p>'Silk being a natural, braided suture'</p> Signup and view all the answers

    Which nonabsorbable suture material is most slowly degraded by hydration?

    <p>Silk</p> Signup and view all the answers

    What makes silk a preferred choice for ligation of large vessels?

    <p>Good knot security</p> Signup and view all the answers

    Which suture material has poor knot tying characteristics when used within arthroscopic cannulas?

    <p>Surgidac</p> Signup and view all the answers

    What is the distinguishing characteristic of polybutester suture among most sutures?

    <p>Marked elasticity</p> Signup and view all the answers

    Which suture material elongates approximately 4 times more than nylon at 2 N of force?

    <p>Polybutester</p> Signup and view all the answers

    What are Polydek and Tevdek examples of?

    <p>Coated and braided polyethylene sutures</p> Signup and view all the answers

    Which composite suture has a multifilament ultra-high-molecular-weight polyethylene core?

    <p>FiberWire</p> Signup and view all the answers

    What is the distinguishing feature of FiberWire compared to braided polyester sutures?

    <p>Greater knot security and abrasion resistance</p> Signup and view all the answers

    What is the primary application of stainless steel sutures?

    <p>Musculoskeletal applications</p> Signup and view all the answers

    Which suture material has characteristics theorized to be advantageous when closing postoperatively swelling wounds?

    <p>Polybutester</p> Signup and view all the answers

    What is the key difference between Polydek and Tevdek sutures regarding their coating with polytetrafluoroethylene?

    <p>Polydek is impregnated, Tevdek is lightly coated</p> Signup and view all the answers

    Which composite suture maintains stiffness until ultimate failure, unlike Stainless Steel?

    <p>FiberWire</p> Signup and view all the answers

    What is the primary reason for the replacement of Stainless Steel suture by polyblend composite sutures?

    <p>Strength</p> Signup and view all the answers

    More Like This

    Sutures and Needles Uses
    6 questions

    Sutures and Needles Uses

    ReachableVenus avatar
    ReachableVenus
    Sutures and Needles Uses Quiz
    12 questions

    Sutures and Needles Uses Quiz

    ReachableVenus avatar
    ReachableVenus
    Sutures and Stitch Types
    10 questions

    Sutures and Stitch Types

    TemptingBagpipes avatar
    TemptingBagpipes
    14. Sutures and Wound Repair 1
    24 questions

    14. Sutures and Wound Repair 1

    GlisteningHaiku avatar
    GlisteningHaiku
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser