L05: Suture Materials (Kim) Flashcards Preview

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Flashcards in L05: Suture Materials (Kim) Deck (13):
1

as tissue strength increases, suture strength ____

decreases

2

ideal suture material

bioinert
easily sterilizable without consequences
handles well and produces secure knots
cheap
*PDS comes closest*

3

suture classifications

absorbable/non-absorbable
multifilament/monofilament
natural/synthetic
coated/impregnated

4

USP numeric scale range for suture size

11-0 to 7

5

how is suture absorbed?

via enzymatic degradation or hydrolysis
-absorption rates depend on environment (ie. pH)

6

nonabsorbable suture takes about how long to lose significant tensile strength?

>60 days

7

chars. of multifilament suture

-flexible, handles well
-has capillary action
-may induce nidus (seeds bacteria)
-increased tissue drag (although usually coated to minimize this)
-MAY have superior knot security

8

chars. of monofilament suture

-stiff, memory
-no capillary action
-low tissue drag
-MAY have poorer knot security
-more easily damaged than multifilament suture?

9

2 examples of natural suture material

silk
catgut
-incite larger inflammatory tissue reaction and have more variable absorption rates compared to synthetic sutures

10

chromate salts

used to coat cat gut to decrease antigenicity and increase absorption rate

11

rank the following in how fast they return to 100% strength after being incised and sutured: bladder, GI tissue, linea alba, tendon/ligament

Bladder > GI tissue > linea alba > tendon/ligament

12

Name 7 absorbable suture types

Cat gut
Monocryl
Biosyn
Vicryl
Dexon
PDS II
Maxon

First 5 lose 50% tensile strength within 2-3 weeks, PDS II and Maxon lose 50% tensile strength within 5-6 weeks

13

see white board photos for rest of lecture material

:)