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Surgery Lab > Suture Materials and Needles > Flashcards

Suture Materials and Needles Flashcards

1
Q

What are 4 qualities of Chromic gut?

A

Absorbable
Multifilament
Organic
Knot security decreases when wet

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2
Q

How are the filaments organized in Chromic gut?

A

Twisted

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3
Q

What are 3 qualities of Polyglactin 910?

A

Absorbable
Multifilament
Synthetic

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4
Q

What is Polyglactin 910 commonly used for?

A

Dental surgery

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5
Q

How are the filaments organized in Polyglactin 910?

A

Braided

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6
Q

What are 3 qualities of Polyglycolic acid?

A

Absorbable
Multifilament
Synthetic

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7
Q

What is Polyglycolic acid used for?

A

Dental surgery

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8
Q

How are the filaments organized in Polyglycolic acid

A

Braided

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9
Q

What are 3 qualities of Glycomer 631?

A

Absorbable
Monofilament
Synthetic

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10
Q

How is chromic gut broken down?

A

Phagocytosis

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11
Q

How is Polyglactin 910 broken down?

A

Hydrolysis

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12
Q

How is Polyglycolic acid broken down?

A

Hydrolysis

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13
Q

How is Glycomer 631 broken down?

A

Hydrolysis

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14
Q

What are the uses of Glycomer 631?

A

Closure of hollow viscus (enterotomies, cystotomies), body wall and fascia

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15
Q

What are 3 qualities of Caprolactone?

A

Absorbable
Monofilament
Synthetic

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16
Q

How is Caprolactone broken down?

A

Hydrolysis

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17
Q

What are the uses of Caprolactone?

A

Closure of uninfected bladders and SQ tissue

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18
Q

What are 3 qualities of Poliglecaprone 25?

A

Absorbable
Monofilament
Synthetic

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19
Q

How is Poliglecaprone 25 broken down?

A

Hydrolysis

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20
Q

What are the uses of Poliglecaprone 25?

A

Closure of non-infected bladders and SQ

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21
Q

What are 3 qualities of Polidioxanone?

A

Absorbable
Monofilament
Synthetic

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22
Q

How is Polidioxanone broken down?

A

Hydrolysis

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23
Q

What is special about Polidioxanone’s absorbability?

A

It’s prolonged

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24
Q

What are the uses of Polidioxanone?

A

Closure of hollow viscus (enterotomies, cystotomies), body wall and fascia

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25
Q

What are 3 qualities of silk?

A

Non-absorbable
Multifilament
Natural

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26
Q

How are the filaments organized in silk?

A

Braided

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27
Q

What is silk used for?

A

Cardiovascular surgery

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28
Q

What are 3 qualities of nylon?

A

Non-absorbable
Monofilament
Synthetic

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29
Q

What is nylon susceptible to?

A

Degradation

30
Q

What can cause nylon to lose tensile strength?

31
Q

What is nylon used for?

A

Skin closure, orthopedic repair

32
Q

What are 3 qualities of Polyproylene?

A

Non-absorbable
Monofilament
Synthetic

33
Q

What makes Polypropylene so strong?

A

Very resistant to degradation b/c lacks hydrolyzable bonds

34
Q

What is Polypropylene used for?

A

Tendon, ligament, fascial and join capsule closures

35
Q

What are 3 qualities of Polymerized caprolactam?

A

Non-absorbable
Multifilament
Synthetic

36
Q

How are the filaments organized in Polymerized caprolactam?

37
Q

What is Polymerized caprolactam used for?

A

Skin sutures ONLY

38
Q

What are 3 qualities of Stainless steel?

A

Non-absorbable

Monofilament OR Twisted

39
Q

What does stainless steel have a high content of?

A

Nickel and chromium

40
Q

What does the “L” designation on stainless steel suture mean?

A

Low carbon

41
Q

What is stainless steel suture used for?

A

Orthopedic applications (closure of sternotomy)

42
Q

What are 6 characteristics of suture?

A 
Size
Flexibility
Surface characteristics and coating
Capillarity
Tensile Strength
Knot security
43
Q

What is the smallest suture size?

44
Q

What is the largest suture size?

45
Q

Which has less tensile strength, small or large suture?

46
Q

When do you want more suture flexibility?

A

Vessel ligation

47
Q

What does the surface characteristic of suture have to do with it’s behaviour?

A

Affects the ease of passing suture through the tissue (friction)

48
Q

What can be done to braided suture to decrease drag (friction)?

A

Can be coated

49
Q

What is capillarity?

A

Ability of fluid and bacteria to be wicked along suture

50
Q

What is important to remember about capillarity and infected tissue?

A

Multifilament suture should not be used in contaminated or infected tissues

51
Q

What is tensile strength?

A

Measure of a tissue or fibers ability to resist deformation or breakage.

52
Q

What is a rule of thumb with tensile strength?

A

Suture should be as strong as the tissues in which they are placed

53
Q

What is knot strength?

A

The amount of force needed to cause a knot to slip

54
Q

What are surgical needles made of?

A

Stainless steel

55
Q

What is the most commonly used needle shape?

A

1/2 circle

56
Q

What needle shape is more easily manipulated through superficial tissue?

A

3/8 circle

57
Q

What needle shape is used for opthalmic procedures?

A

1/4 circle

58
Q

What shape needle is good for confined spaces and deep tissues?

A

5/8 circle

59
Q

When is a straight needle used?

A

When placing purse-string sutures

60
Q

How is a straight needle manipulated?

A

With fingers

61
Q

What is a taperpoint needle?

A

Sharp, non-cutting needle

62
Q

What 3 tissues is a taperpoint used for?

A

Intestine
SQ tissue
Fascia

63
Q

What is a tapercut needle?

A

Combo of reverse cutting and taperpoint

64
Q

What 3 tissues is a tapercut used for?

A

Heavy, thick fascia
Tendon
Vascular grafts

65
Q

What is a Cutting needle?

A

Cutting edge on concave portino of needle

66
Q

What is a reverse cutting needle?

A

Cutting edge on convex side.

67
Q

What is a benefit of a reverse cutting over a cutting needle?

A

Reverse cutting tends to reduce risk of tissue cut out

68
Q

What tissue is a reverse cutting needle for?

69
Q

What is a spatula point needle?

A

Flat on top and bottom

70
Q

What is a spatula point needle used for?

A

Opthalmic procedures

71
Q

What is a blunt point needle?

A

A blunt point that dissects through friable tissue without cutting it

72
Q

What tissue is a blunt point needle used for?

A

Soft parenchymal organs (liver, kidneys)

Surgery Lab (3 decks)

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