EXAM 1: Lecture 10 - suture material and patterns LA

Question 1

what questions should you ask when choosing suture material

Answer 1

how long does it need to last? inside or outside the body? inflammatory response? any wound contamination?

Question 2

what are the typical suture sizes used in LA

Answer 2

2-0 for SQ and 2 or 3 for linea alba

Question 3

T/F: internal organs/SQ heal slow compared to fascia

Answer 3

false! The opposite

Question 4

what does skin healing depend on

Answer 4

quality of apposition

Question 5

how long does it take for skin to seal

Answer 5

seals within 1 day

Question 6

how long does it take the primary incision to heal

Answer 6

10-14 days

Question 7

how long does it take skin to get back to full strength

Answer 7

<30 days

Question 8

____ suture size = _____ volume of knot

Answer 8

increased suture size = increased volume of knot

Question 9

____ volume of knots = _____ inflammation

Answer 9

increased volume = increased inflammation

Question 10

___ inflammation = ___ closure

Answer 10

increased inflammation = weaken closure

Question 11

what needle size is the most common

Answer 11

3/8 or 1/2 circle

Question 12

when do you use 1/4 circle needle

Answer 12

used in ophthalmologic sx

Question 13

when do you use 5/8 circle needle

Answer 13

confined or deep locations

Question 14

what is a taper point needle and when do you use

Answer 14

round needle shaft does not enlarge hole as it passes thru and delicate tissue

Question 15

what is a reverse cutting needle and when is it used

Answer 15

cutting edge on convex/outer side to make it stronger than conventional cutting

used in skin or fibrous tissue

Question 16

when is a buhner needle used

Answer 16

to purse string prolapses

Question 17

what is this

Answer 17

buhner needle

Question 18

what is an S needle

Answer 18

used to close cow skin, negates need for needle drivers, and is easier to punch thru skin

Question 19

where is the weakest point in your suture pattern

Answer 19

where the knot is!

Question 20

if you have a larger suture like #2 or #3 vicryl, how many throws do you need

Answer 20

5 throws

Question 21

_____ knot security with ______ suture size

Answer 21

decreased knot security with increased suture size

Question 22

why is monofilament good for skin

Answer 22

has decreased bacterial transport into deeper tissues

Question 23

what is the commonly used suture pattern and with what suture for skin

Answer 23

simple interrupted with no tension and 2-0 suture

Question 24

how far away are your bites for fascia in LA

Answer 24

15mm away from cut edge

Question 25

how far away are your bites from skin edge in LA

Answer 25

5mm

Question 26

what suture and size do you use to close fascia in equine

Answer 26

polyglactin 910 or polydioxanone in sizes #2-7 (2 or 3 is most common)

Question 27

what type of suture is commonly used to close fascia in cattle

Answer 27

catgut!!

Question 28

what type and size of suture do you use for SQ or GI organs in LA

Answer 28

PDS, Vicryl, Monocryl in a 2-0

Question 29

what type of suture do you use for contaminated wounds

Answer 29

monofilament ONLY!!!

Question 30

what suture can you use for farm animals to reduce cost

Answer 30

chromic cat gut, supramid (braided nylon) or braunamid (braided polyamide)

Question 31

what are the benefits of skin staplers and when should you use them

Answer 31

fast to put in but use in wounds with no tension

Question 32

when should you NOT use skin staples in LA

Answer 32

not for minis that colic or foals

Question 33

what are the inverting suture patterns used in LA

Answer 33

utrecht, cushing, or lembert

Question 34

when is utrecht used

Answer 34

commonly on the uterus

Question 35

what type of suture pattern is this

Answer 35

utrecht

Question 36

when is cushing pattern used

Answer 36

GI, urinary bladder and combined with simple continuous

Question 37

when is lembert suture pattern used

Answer 37

GI or urinary bladder

Question 38

what is important to remember when suturing wounds with tension

Answer 38

tension impedes healing by impairing blood supply and prevent perfect apposition

Question 39

what does langers lines mean and why do they matter

Answer 39

relaxed skin tension lines

incision being parallel to them = least tension

Question 40

what is preferable when suturing wounds with tension

Answer 40

use limb immobilization, add more sutures, use tension relieving techniques

Question 41

what are relief incision

Answer 41

when you close the primary wound and add small incisions near it to relieve tension

Question 42

what are walking sutures

Answer 42

when you use suture to pull skin over top of defect to even out tension and get rid of deadspace

Question 43

what is near-far-far-near suture pattern

Answer 43

excellent apposition and tension relief and interrupted only

Question 44

what is different from LA and SA suturing

Answer 44

LA skin is MUCH thicker and there is more tension on skin sutures

LA usually uses surgeons throws

PDSII is not preferred to close linea alba

Rarely use intradermal patterns