Brainscape's Knowledge GenomeTM

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


See full index

Surgery 1 (SAB) > Lecture 10 - Suture Materials & Paterns - LA > Flashcards

Lecture 10 - Suture Materials & Paterns - LA Flashcards

1
Q

What needs to be considered when choosing suture material

A
  • Size & chemical make up (Natural v. synthetic) - How long does it need to last?
  • Absorbable v. nonabsorbable - in or out of the body? inflammatory response/
  • Monofilament v. multifilament - wound contamination
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

T/F: The suture used in LA is the same as SA but just bigger

A

True

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

What sized suture is used for SQ in LA

A

2-0

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

What suture size is typically used for the linea alba

A

2 or 3

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

List the suture selection principles

A
  • The suture should be as strong as the norm tissue through which it is placed
  • Tensile strength reduction over time should correspond to the healing of the affected tissue
  • Suture is not needed after the wound is healed
  • The strength of the wound is more dep on the tissue’s ability to hold the suture than the suture material itself
  • Suture w/ elasticity is ideal for skin closure (adapts to wound edema)
  • Suture w/ high stiffness is chosen for abdominal closure, herniorraphy, prosthesis, etc
  • Oversized suture will weaken your closure due to excessive tissue rxn
  • Wounds under tension = increasing the # of sutures or using a tension relieving pattern is better than increasing suture size
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does suture strength mean

A

How long the suture needs to last

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How quick do internal organs & subQ recover

A
  • Few days
  • Full strength in a couple of weeks
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How quick does fascia heal

A
  • Slowly
  • Couple weeks
  • Full strength in a couple of months
  • EX linea alba
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How quick does skin heal

A
  • Based on the quality of the apposition
  • Seals w/in 1 day
  • Primary incision heals in 10-14 days
  • Full strength < 30 days
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Better apposition = what

A

Decreasing healing time

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

What suture do you use for if what you are working on can not be removed from the body (organs or Sub Q)

A

Absorbable suture

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

What suture should you use if you can remove it (skin)

A
  • Non-absorbable
  • Should be inert to reduce inflammation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Inflammatory response is needed for what

A

Absorbable suture absorption

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

Increasing suture size increases what

A

The volume of know

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

Increasing the volume of knot increases what

A

Inflammation

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

Increasing inflammation causes what

A

Weakened closure

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

Use the (largest/smallest) suture possible

A

Smallest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What needle is more commonly used in LA surgery & why

A

3/8 or 1/2 circle b/c it is more ergonomic to use

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What needle size is used for opthalmologic surgery

A

1/4 circle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What needle size is used for confined or deep locations

A

5/8 circle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What should be the frame of mind when choosing needle size

A

Want to be able to reach across both sides of the wound w/ the needle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Describe a taper point needle & what tissue it is used for

A
  • Round shaft doesn’t enlarge hole as it passes through
  • Delicate tissue
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Describe a reverse cutting needle & what tissue it is used for

A
  • Cutting edge on convex (outer) side
  • Makes needle stronger than conventional cutting
  • Less risk of tissue cut out
  • Skin &/or fibrous tissue
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

T/F: A conventional cutting needles are commonly used

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is this & what is it used for

A
  • Buhner needle
  • Used to purse string prolapse
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is this & what is it used for

A
  • S needle
  • Used to close cow skin
  • Negates need for needle drivers
  • Easier to punch through thick skin
  • Use suture on a reel
27
Q

Knot = what

A

The weakest point in the suture pattern

28
Q

Why are doing correct knots important

A

Prevent dehiscence of incision

29
Q

What is a simple throw

A

Half a knot

30
Q

What is a square knot

A

Two simple throws that are reversed

31
Q

What is different about a surgeons throw

A
  • More friction
  • More suture material left in the wound
  • Placed when a square throw is slipping
32
Q

What is a granny knot

A
  • Two throws not reversed
  • Not secure
  • Don’t use
33
Q

What is a half hitch

A
  • Pulling up on the suture end instead of across
  • Not secure
34
Q

What comes in contact with the suture & can change the frictional behavior of suture

A

Body fluids

35
Q

How many throws make a secure ligature

A

4 throws

36
Q

How many throws should be used for larger suture ( #2 and #3)

A

5 throws

37
Q

How long should the suture tag be

A

@ least 3 mm in length

38
Q

Decrease in knot security = increase what

A

Suture size

39
Q

Describe the suture & components for suturing skin

A
  • Monofilament to decrease bacterial transport into deeper tissues
  • Non absorbable suture (nylon & polypropylene)
  • Simple interrupted w/ no tension
  • Apposition of tissue edges or slight eversion
  • Bites about 5mm from skin edge
40
Q

Describe the suture & components for suturing delicate tissue

A
  • SubQ or GI organs
  • PDS, Vicryl, or moncryl
  • USP 2-0 typically
  • Inverting suture patterns (lembert or simple cont. oversewn w/ a cushings)
41
Q

Describe the suture & components for suturing contaminated wounds

A
  • Monofilament only
  • nonabsorbable suture - inert
  • Elastic allows for tissue swelling
42
Q

T/F: All wounds are contaminated in horses

A

True

43
Q

What is some reduce cost suture for farm animals

A
  • Chromic cat gut
  • Suture on a reel like supramid (braided nylon) & Braunamid (Braided polyamide)
44
Q

When should suture be removed

A

10 to 14 days

45
Q

What should be done to remove suture from wounds under tension

A

staged removal (take out every other suture or every 1/3 initially)

46
Q

How should skin staplers be used

A
  • Stainless steel - inert
  • Fast to put it
  • Use staple remover or hemostat to remove
  • For wounds with no tension (appose wound edges)
47
Q

Describe the inverting suture patterns

A
  • Invert the tissue edges to help make a seal
  • used in the uterus, GI tract, & urinary bladder
  • Suture doesn’t come out the tissue edge (adjacent to the edge to fold in some tissue)
48
Q

Describe the utrect suture pattern

A
  • Inverting suture pattern
  • Commonly used on the uterus
49
Q

Describe the cushings suture patter

A
  • Invert
  • Commonly used on GI & Urinary bladder
  • Often combined w/ a simple continuous first
50
Q

Describe the Lembert suture pattern

A
  • Invert
  • For GI or urinary bladder
  • Can be interrupted or continuous
  • Be careful not to make a “cuff” of tissue deep to your suture line
51
Q

How does tension impede healing

A

*Impairs blood supply
* Prevents perfect apposition
* Shear stress on wound

52
Q

What is this and describe it

A
  • Langer’s lines
  • Relaxed skin tension lines
  • Incision parallel = least tension
  • Incision perpendicular = most tension
53
Q

What is preferable for suturing wounds under tension

A
  • Use limb immobilization
  • Add more suture
  • Use tension-relieving techniques
54
Q

What is not preferable for suturing wounds under tension

A

Using bigger suture

55
Q

List some tension relieving techs

A
  • Release incisions
  • Walking sutures
  • Tension relieving suture patterns like +/- stents, combo patterns, & using skin tension lines
56
Q

What is relief incisions

A

Close the primary wound and leave the relief incisions to heal by second intention

57
Q

What is walking sutures

A
  • Using you suture to pull the skin over the top of the defect
  • Evens out tension
  • Obliterate dead space
  • No closer than 2 - 3 cm apart ( can increase inflammatory response w/ suture
58
Q

What are stents

A
  • Distribute tension more evenly along suture to prevent pull through
  • staged removal if needed
  • Avoid using a stented closure on its own (always a combo of stents & other suture patterns)
59
Q

Describe the vertical mattress as a tension relieving suture pattern

A
  • Less impingement of blood supply compared to horizontal mattress
  • Good apposition but some eversion
  • Interrupted only
  • Bites are perpendicular to cut
60
Q

Describe the horizontal mattress as a tension relieving suture pattern

A
  • Strong tension relieving (will not tear through tissue) but tends to impede blood supply & rarely use w/out
  • Most eversion possible
  • Can apply in continuous pattern
  • Visible bites are parallel to cut egdge
61
Q

Describe the near far far near as a tension relieving suture pattern

A
  • Excellent apposition & tension relief
  • Interrupted only
  • Most suture in wound
62
Q

Describe the ford interlocking suture pattern

A
  • Mild tension relieving cont pattern
  • Reduces suture disruption if on part breaks
  • Good apposition
  • Commonly used to close skin on cow flank incisions
63
Q

What are some differences from SA

A
  • Punching through skin (much thicker)
  • Tightness on skin sutures should be snug
  • More freq use surgeon’s throws
  • PDS 2 is not preferred for closing the linea alba
  • Rarely use intradermal patterns
  • Bigger incisions = longer suture (management is critical)
  • Sometimes standing on your head
64
Q

Describe the suture & components for suturing fascia

A
  • Most common in large animal linea alba
  • bites are 15mm away from cut edge (extra suture needed)
  • Can close using polygalctin 910 or polydioxanone (PDS)
  • Size = #2 - 7 (#2 or #3 most common)
  • Cattle: catgut is common but to much inflammation to use in horses

Surgery 1 (SAB) (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions