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How are needle identified?
- Type of suture attached
- Point
- Shape of needle
- Cross-section
- Size
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A needle attached to suture is called what?
Swaged
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The _________ the number of a needle the __________ the needle is
Lower; larger
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What are needle made of?
Stainless steel or carbon
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What type of suture needle has smooth cuts, little resistance and is used for internal sutures?
Taper needle
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What needle is for external sutures or in areas of high resistance?
Cutting needle
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What suture needle is used in external areas or on areas w/ resistance, but are less able to break or bend?
Reverse cutting
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What type of animal has tough skin that may require the use of a reverse cutting needle?
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Suture material is used for what?
- Opposing edges of wounds/incisions
- Obliterating dead space
- Ligation
- Tightening/stabilizing joints (cruciate ligaments)
- Strengthening/replacing weakend tissue (Diaphragmatic hernia)
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What can a positive drawer sign indicate?
ACL rupture
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What are treatments for ACL rupture?
- TPLO (tibial plateau leveling osteotomy)
- TTA (tibial tuberosity advancement)
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What are characteristics of suture material?
- Memory
- Tensile strength
- Flexibility
- Absorbability
- Structure
- Knot security
- Color
- Origin
- Size
- Packaging
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Plain suture refers to?
Suture not treated with anything
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Chromic suture refers to?
Suture treated with acid salts that delay absorption rate
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Capillary refers to what?
- Wicking
- A suture materials ability to absorb liquids
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Monofilament suture tends to hold memory more so than multifilament suture. What does this mean?
It retains the shape of the package
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What is tensile strength?
How much weight or pull the suture can withstand
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What can affect tensile strength?
Tissue and enzymes
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What problem occurs more so with multifilament suture than monofilament?
Wicking
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Knot securuty _________ as suture size _________
Decreases; increases
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Suture sizes range from _____ to ______
10-O, 3
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When are absorbable sutures used?
When prolonged strength is not required or when infection is present
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Non-absorbable suture is used when?
Tissue rxn needs to be minimized or sutures are left in for more than 2 - 3 wks
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Surgical gut causes what type of reaction?
Inflammatory due to absorption through phagocytosis
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This suture is synthetic, absorbable, braided, and looses 65% of it's strength w/in 21 days
Dexon (Polyglycolic acid)
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This type of suture is synthetic, braided, absorbable and looses strength w/in 21 days
Vicryl (Polyglactin 910)
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This suture is synthetic, monofilament, absorbable and retains 69% strength at 42 days
PDS (Polydioxanone)
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This suture material is synthetic, monofilament, absorbable and retains 45% of its strength at 21 days
Maxon (Polyglyconate)
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This suture is synthetic, monofilament, absorbable and is rapidly absorbed
Monocryl (Polyglecaprone)
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This suture type is synthetic, absorbable, monofilament and is rapidly absorbed, only retaining 25% strength at 18 days
Biosyn (Glycomer 631)
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This suture is natural, braided, non-absorbable and can wick
Silk
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This suture is non-absorbable, natural, does not support bacterial growth and is difficult to handle
Stainless steel
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This suture is synthetic, monofilament or multifilament, non-absorbable and is used where it will be removed
Nylon (Polyamide)
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This suture material is synthetic, non-absorbable, monofilament, and similar to nylon
Prolene (Polypropylene)
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This suture material is synthetic, non-absorbable, highly elastic, and monofilament
Novafil (Polybutester)
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