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Surgery Lab FINAL (anx and Sx) > Sx Suture > Flashcards

Sx Suture Flashcards

1
Q

Function of suture

A

Hold tissue in apposition until wound healing progresses

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2
Q

Suture properties (4)

A

Tensile strength
Knot strength
Pliability
Capillarity

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3
Q

Tensile strength

A

Sutures ability to resist breakage
Suture should be as strong as the tissue
Larger size= inc TS

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4
Q

Knot strength

A

amount of force necessary to cause a knot to slip or break
Related to coefficient of friction
Knot is weakest point

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5
Q

Pliability

A

Ease of handling

Related to material and size

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6
Q

Capillarity

A

Process which fluid or bacteria is wicked along suture
Allows infection to persist in the suture
Avoid in infected tissue

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7
Q

Absorbable

A

Looses most of its tensile strength by 60 days

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8
Q

Mechanism of absorption of suture

A

hydrolysis

Enzymatic

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9
Q

Factors affecting absorption rate

A

Material
coating
size
biochemical environment (urine, pH, infection)

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10
Q

Non-absorbable

A

Retains tensile strength longer than 60 days
natural or synthetic
Braided or monofilament

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11
Q

Suture structure

A

Braided, twisted or monofilament

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12
Q

Suture coating funtion

A

Decreases tissue drag

Increases pliability

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13
Q

Suture coating option

A

Teflon, silicone, wax, calcium stearate,

Antibiotic coating- triclosan

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14
Q

Catgut

A 
Natural/absorbable
Twisted
Derived from small intestine of cattle
Plain or chromic
Inflammatory
Unpredictable enzymatic absorption
Short TS duration
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15
Q

Polyglactin 910- vicryl

A

Braided multifilament
Coated for handling
Absorbed by hydrolysis

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16
Q

Vicryl

A

TS for 14-21 days
Rapidly degraded in infected urine
Ophthalmic surgery

17
Q

Vicryl Plus

A

Tricolasan coating
Anitmicrobial
Infected wounds

18
Q

Vicryl Rapid

A

Irradiated form
0% TS in 2 weeks
Dental surgery

19
Q

Polyglycolic Acid- Dexon

A 
Braided Multifilament
Absorbed by hydrolysis
Rapidly degraded in infected urine
TS for 14-21 days
Coated or uncoated
20
Q

Poliglecaprone 25- Monocryl

A 
Monofilament absorbable
Hydrolysis
TS for 7-14 days
Regular or AB coated
Used for non infected bladders/SC tissue
21
Q

Polyglytone 6211- Caprosyn

A

Absorbable monofilament
TS 0% at 14-21 days
Hydrolysis
Used for noninfected bladders/SC tissue

22
Q

Glycomer 631- Biosyn

A

Monofilament absorbable
Hydrolysis
Maintains strength for 21 days
Many uses: enterotomy, cystotomy, body wall, SC

23
Q

Polyglyconate- Maxon

A

Absorbable monofilament
Maintains strength for 6 weeks
Hydrolysis
Similar to PDS

24
Q

Polydioxanone- PDS

A 
Absorbable monofilament
Hydrolysis
50% TS at 6 weeks
Similar to Maxon
Many uses
25
Q

Braided- absorbable

A

Polyglactin 910- Vicryl rapid
Polyglactin 910- Vicryl
Polyglycolic acid- Dexon

26
Q

Monofilament- absorbable

A 
Poligelcapron 25- monocryl
Polygytone 6211- Caprosyn
Glycomer 631- Biosyn
Polydioxanone-PDS
Polyglyconate- Maxon
27
Q

Silk

A 
Natural/nonabsorb
Braided
Very inflammatory
Excellent handling
Cardiovascular surgery
28
Q

Stainless steel

A 
Natural/nonabsorb
monofilament or twisted multifilament
Highest TS
Best knot security
Non inflammatory
very poor handling
Orthopedic uses
Skin staples
29
Q

Polypropylene- Prolene

A 
Synthetic/nonabs
Monofilament
Very high TS
Low reactivity
Used where need for prolonged strength
-tendons
-ligaments
-joint capsules
30
Q

Nylon- Ethilon

A 
Synthetic/non-abs
Monofilament
Low reactivity
High TS
Poor handling
Used for skin closure and orthopedic repair
31
Q

Polymerized Caprolactam Vetafil

A 
Synthetic/nonabs
Twisted multifilament
High tissue reactivity
Good handling 
Used for skin only
Implantation leads to sinus formation
32
Q

Polyester- Ethibond

A 
Synthetic/nonabs
Braided multifilament
Good TS
Coated
Poor knot security
High tissue reactivity
Musculoskeletal surgery
33
Q

Straight Needle

A

Can be used for tension relieving sutures on skin because more room to work

34
Q

Curved Needle

A

Most commonly used in small animals

35
Q

J needles

A

Combination of curved and straight

36
Q

Cutting needle

A

Cutting surface on concave side

Increased risk of suture pull through

37
Q

Reverse cutting needle

A

Cutting surface on convex side

typically used for skin

Surgery Lab FINAL (anx and Sx) (3 decks)

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