5: Suture materials and surgical staples Flashcards Preview

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Flashcards in 5: Suture materials and surgical staples Deck (41):
1

absorbable

undergoes degradation of tensile strength within 60 days

2

Non-absorbable

remains in tissues until surgically removed
may still lose strength

3

Monofilament characteristics

single strand
less flexible
have memory
smoother

4

multifilament

braded single strands
can harbor bacteria in the interstices between strands
greater capillary potential
can be coated

5

Capillary sutures

absorb and wick fluids
can transport bacteria

6

Catgut

capillary
multifilament
natural
moderate to severe foreign body reaction

7

50-100% loss of tensile strength

2-3 weeks

8

Suture sizes

11-0 to 7
usually use between 4-0 and 1

9

advantages of catgut

good handling
minimal capillarity
good knot security when dry

10

Disadvantages of catgut

reactive
variable rate of loss of tensile strength
poor knot security when wet
sensitivity reactions
not autoclavable

11

PGA (dexon) characteristics

braided
synthetic
absorption predictable

12

PGA (dexon) advantages

slight inflammatory reaction
predictable
breakdown products are antibacterial
wide range of suture and needle sizes
well tolerated in contaminated wounds

13

PGA (dexon) disadvantages

poor knot security
friction
alkaline environments increase degradation
rapid tensile strength loss

14

Monocryl characteristics

synthetic
absorbable
monofilament
Strong rapidly loses strength

15

Monocryl tensile strength

50% loss in 1-2 weeks

16

Biosyn characteristics

synthetic
absorbable
monofilament
complete absorption is rapid

17

When do you use monocryl

bladder
sub q
vessel ligation

18

Biosyn tensile strength

50% loss in 2-3 weeks

19

Vicryl characteristics

absorbable
synthetic
multifilament

20

when do you use vicryl

mouth surgery
intradermal sutures
small vessel ligation

21

Vicryl tensile strength

50% loss in 2 weeks

22

PDS 2 name

polydioxanone

23

PDS 2 (polydioxanone) characteristics

synthetic
absorbable
monofilament
most popular in vet med
default for most internal suturing

24

PDS 2 (polydioxanone) tensile strength

50% los in 5-6 weeks

25

Silk characteristics

natural
non-absorbable
multifilament

26

When do you use silk

when you want local inflammatory response
PDA
portosystemic shunts
vessels for ligation

27

Characteristics of braided synthetic non-absorbable sutures

Cheap
strong
tissue trauma
possibly not sterile

28

Nylon characteristics

synthetic
non-absorbable
monofilament
used in skin

29

Prolene characteristics

synthetic
non-absorbable
monofilament
strong
least likely to infect

30

When do you use prolene

skin
tendon
ligament

31

Characteristics of stainless steel

cheap
autoclavable
strong
cycle to failure

32

What to use in skin suture

Monofilament nylon, polypylene, or steel

33

what to use in subcutis

synthetic absorbable

34

What to use in fascia

slow healing
Non-absorbable: nylon, polypropylene
Slow absorbing: polydioxanone, polyglyconate

35

Muscle

synthetic absorbable or not

36

Cardiac

nylon
polypropylene

37

GI

Synthetic monofilament absorbable or non absorbable

38

Vascular ligation

polyglactin 910
cat gut
silk

39

vascular repair

polypropylene

40

tendon

non-absorbable monofilament

41

Nerve

nylon
polypropylene