Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Clinical Studies > Suture Material > Flashcards

Suture Material Flashcards

1
Q

What are absorbable sutures?

A

Sutures that lose their tensile strength within 60 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are non-absorbable sutures?

A

Sutures that are permanent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is natural suture material?

A

Made from animal or plant tissue that has antigenic properties

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is synthetic suture material?

A

Man-made material

- Chosen for its inert character

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What 12 qualities should the ideal suture material have?

A
  1. Maintain adequate tensile strength
  2. Stimulation minimal inflammation
  3. Discourage bacterial growth
  4. Non-capillary but predictable absorbable
  5. Non-electrolytic
  6. Non- allergenic
  7. Non- carcinogenic
  8. Good Handling properties
  9. Good knot security
  10. Inexpensive and readily available
  11. Easily sterilised and able to be re sterilised
  12. Monofilament
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Quality of maintaining adequate tensile strength…

A
  • Tensile strength affects the tissue’s ability to withstand injury but isn’t related to length of time it takes the tissue to heal
  • Suture chosen should at least as strong as the tissue
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Quality of stimulating minimal inflammation..

A

Natural materials provoke inflammation and potentially immune response
- Absorption by phagocytosis which leads to granulation tissue and scarring

Synthetic Materials are designed to be minimally inflammatory
- Absorption mainly by hydrolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Quality of discouraging bacterial growth…

A

Monofilaments less likely to collect bacteria when they are dragged across the skin
- Multifilament weaves trap bacteria

  • Any suture material acts as a trap for infection which lowers the number of bacteria required to establish infection
  • Some suture material has antibacterial coatings
    • these can actively reduce infection risk
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Quality of non-capillary but predictably absorbable…

A
  • Capillary suture material “wicks” liquids

- Absorbable sutures should degrade as predicted, and be unaffected by the presence of infection

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Quality of non-electrolytic…

A

I.e. inorganics such as stables should be made out of material that doesn’t rust or cause electrolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Quality of non-allergenic…

A

Won’t cause a reaction e.g. welts or a whole body reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Quality of non-carcinogenic…

A

Non cancer causing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Qualities of good handling skills and good knot security…

A

Suture material needs to be pliable so knots can be formed

Memory is the tendency for the material to kink or spiral when stressed and maintain the new shape after stress is removed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What type of suture materials tend to have the best memory?

A

Monofilaments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What type of suture materials tend to return to their pre-stressed state?

A

Multifilaments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What type of filaments have the best knot-holding characteristics?

A

Multifilaments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is an advantage and disadvantage of coating suture material?

A

Adv:
Reduces tissue drag i.e. friction causes trauma

Disadv:

  • Requires more tension to ensure good tissue apposition
  • Reduces knot- holding
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Describe braided multifilaments…

A

They are made from several primary strands spun together

  • Wick fluid and trap bacteria in gaps between strands
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Describe catgut suture…

A

Made from sub-mucosa of sheep or serosa of cows

  • Three strands spun together then polished to form a virtual monofilament
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Describe chromic catgut suture…

A

Made from sub-mucosa of sheep or serosa of cows
- treated with Chromic sales to slow absorption

  • A virtual monofilament
  • Tensile strength: 21-28 days
  • Absorbed normally around 90 days
21
Q

Describe silk suture…

A

Natural protein fibre of raw silk spun by silkworms

  • Braided and dyed
22
Q

Describe polyester braided suture…

A
  • Indefinite wound support
  • Less tissue reaction than silk
  • Handles and ties securely
23
Q

Describe Nylon suture…

A
  • Monofilament
  • Loses about 10-15% strength per year
  • Takes up fluid
24
Q

Describe USP suture sizing…

A

7 is the largest
12/0 (12/ zero) is the smallest
- i.e. size 000000000000 is finer than 2/0 which is 00

  • As the number of zeros increases, the diameter of the suture decreases
25
Q

What principle should you use to select your sutures on?

A

The principle that different tissue have differing requirements for suture support, and they heal at different rates

26
Q

What is important about tissues strengths?

A

There are regional and species differences

  • related to the collagen layers of the organ and the submucosa
    i. e. duodenum is strong and the bladder is weak
27
Q

What is important about suture materials and their correlation with tissue healing rates?

A

A suture must last at least as long as, but not too much longer, than the time the tissue takes to heal

28
Q

What kind of suture should you choose for rapidly healing tissue?

A
  • One that will lose it’s tensile strength at about the same rate as the tissue gains strength
  • And one that will also be absorbed
29
Q

What rule should be applied when selecting suture size?

A

Use the smallest diameter suture that will adequately hold the mending wounded tissue

Suture no stronger than the sutured tissue

30
Q

What are the needle types?

A
  • Needles with eyes

- Needles with swaged on suture

31
Q

What is the advantage of a swaged needle?

A
  • Follows directly through the hole made by the needle
32
Q

What is the disadvantage of a swaged needle?

A

Added cost

- Should be handed to the client so it doesn’t cost the practise

33
Q

What is the advantage of an eyed needle?

A

Allows reel suture to be used which reduces cost

34
Q

What is the disadvantage of a swaged needle?

A

Suture material may fall out of the eye

35
Q

Describe the advantages of DIY swaged needles?

A
  • Cheap
  • Readily available
  • Very sharp
  • Good in the field for large animals
36
Q

Describe the disadvantages of DIY swaged needles?

A
  • Fiddly threading
  • Can traumatise suture when threading
  • Sometimes pulls out of the needle
37
Q

What are straight needles used for?

A
  • GIT
  • Nasal cavity
  • Nerves
  • Oral cavity
  • Pharynx
  • Skin
  • Tendons
  • Vessels
38
Q

What are half-curved needles used for?

A
  • Skin (rarely used)

- Laparoscopy

39
Q

What are 1/4 circle needles used for?

A
  • Eye

- Microsurgery

40
Q

What are 3/8 circle needles used for?

A
  • Aponeurosa
  • Biliary tract
  • CV system
  • Dura
  • Eye
  • GIT
  • Muscles
  • Myocardium
  • Nerves
  • Periosteum
  • Pleura
  • Skin
  • Tendon
  • Urogenital tract
  • Vessels
41
Q

What are 1/2 circle needles used for?

A
  • Biliary tract
  • CV system
  • Eye
  • Fascia
  • GIT
  • Muscle
  • Nasal cavity
  • Oral cavity
  • Pelvis
  • Peritoneum
  • Pharynx
  • Pleura
  • Skin
  • Tendon
  • Sub cut fat
  • Urogenital tract
42
Q

What are 5/8 circle needles used for?

A
  • Anal
  • Nasal cavity
  • Pelvis
  • Urogenital tract
43
Q

What are compound curved needles used for?

A
  • Eye

- Laparoscopy

44
Q

Describe cutting needles…

A

They have a triangular cross section

- Cut through dense tissue like dermis

45
Q

Describe Taper needles…

A

Have an O cross section

- Used on less dense tissue like bowel or muscle to avoid tearing more delicate tissue

46
Q

What are some alternatives to sutures?

A
  • Metal staples
  • Tape suture
  • Tissue glues
47
Q

What kind of suture material would be suitable for fascia?

A
  • Long-lasting
  • Absorbable
  • Synthetic
  • Mono-filament

e.g. PDS or Maxon size 1 or 0

48
Q

Why is it that we can’t use the best suture and needle every time?

A
  1. Cost

2. Availability in practice

Clinical Studies (19 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions