Sx Suture

Question 1

Function of suture

Answer 1

Hold tissue in apposition until wound healing progresses

Question 2

Suture properties (4)

Answer 2

Tensile strength
Knot strength
Pliability
Capillarity

Question 3

Tensile strength

Answer 3

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

Question 4

Knot strength

Answer 4

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

Question 5

Pliability

Answer 5

Ease of handling

Related to material and size

Question 6

Capillarity

Answer 6

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

Question 7

Absorbable

Answer 7

Looses most of its tensile strength by 60 days

Question 8

Mechanism of absorption of suture

Answer 8

hydrolysis

Enzymatic

Question 9

Factors affecting absorption rate

Answer 9

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

Question 10

Non-absorbable

Answer 10

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

Question 11

Suture structure

Answer 11

Braided, twisted or monofilament

Question 12

Suture coating funtion

Answer 12

Decreases tissue drag

Increases pliability

Question 13

Suture coating option

Answer 13

Teflon, silicone, wax, calcium stearate,

Antibiotic coating- triclosan

Question 14

Catgut

Answer 14

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

Question 15

Polyglactin 910- vicryl

Answer 15

Braided multifilament
Coated for handling
Absorbed by hydrolysis

Question 16

Vicryl

Answer 16

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

Question 17

Vicryl Plus

Answer 17

Tricolasan coating
Anitmicrobial
Infected wounds

Question 18

Vicryl Rapid

Answer 18

Irradiated form
0% TS in 2 weeks
Dental surgery

Question 19

Polyglycolic Acid- Dexon

Answer 19

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

Question 20

Poliglecaprone 25- Monocryl

Answer 20

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

Question 21

Polyglytone 6211- Caprosyn

Answer 21

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

Question 22

Glycomer 631- Biosyn

Answer 22

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

Question 23

Polyglyconate- Maxon

Answer 23

Absorbable monofilament
Maintains strength for 6 weeks
Hydrolysis
Similar to PDS

Question 24

Polydioxanone- PDS

Answer 24

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

Question 25

Braided- absorbable

Answer 25

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

Question 26

Monofilament- absorbable

Answer 26

``` Poligelcapron 25- monocryl Polygytone 6211- Caprosyn Glycomer 631- Biosyn Polydioxanone-PDS Polyglyconate- Maxon ```

Question 27

Silk

Answer 27

``` Natural/nonabsorb Braided Very inflammatory Excellent handling Cardiovascular surgery ```

Question 28

Stainless steel

Answer 28

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

Question 29

Polypropylene- Prolene

Answer 29

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

Question 30

Nylon- Ethilon

Answer 30

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

Question 31

Polymerized Caprolactam Vetafil

Answer 31

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

Question 32

Polyester- Ethibond

Answer 32

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

Question 33

Straight Needle

Answer 33

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

Question 34

Curved Needle

Answer 34

Most commonly used in small animals

Question 35

J needles

Answer 35

Combination of curved and straight

Question 36

Cutting needle

Answer 36

Cutting surface on concave side | Increased risk of suture pull through

Question 37

Reverse cutting needle

Answer 37

Cutting surface on convex side | typically used for skin