Lecture 4: Sutures and Materials

Question 1

Cat gut:

what is it used for

absorb level?

Answer 1

LA sx

quickly absorbable, loss of strength in 7 days

Question 2

Vicryl

what is it used for?

absorb?

Answer 2

ligating vessels and eye sx

loss 50% in 21 days, absorbed at 70 days

Question 3

monocryl

what is it used for?

absorb?

Answer 3

ligating small vessels, sub Q, intradermal, urinary bladder

loss 50% at 7 days (quick!), absorbed 90-120 days

Question 4

PDS II

what is it used for?

absorb?

Answer 4

ligaments, abdominal wall, high tension

loss 50% in 5-6 weeks, gone in 6 months

Question 5

Silk

what is it used for?

absorb?

Answer 5

ligating large vessels

considered non absorbable but does absorb in 2 years. loss 50% in 12 weeks

Question 6

Nylon

what is it used for?

absorb?

Answer 6

skin closure especially in LA

almost never loses tensile strength

Question 7

Prolene

what is it used for?

absorb?

Answer 7

good knot security, skin, cardiovascular, upper airways, tendons

inert, doesn’t degernate

Question 8

polyester

what is it used for?

absorb?

Answer 8

orthopedics as implant

does not degrade

Question 9

stainless steel

what is it used for?

absorb?

Answer 9

musculoskeletal sternotomy closure

very very strong

Question 10

what suture material would you use for: skin

Answer 10

nylon, polyprolene, monocryl for intradermal

Question 11

what suture material would you use for: subcutaneous

Answer 11

monocryl or PDS

Question 12

what suture material would you use for: abdominal wall fascia

Answer 12

PDS

Question 13

what suture material would you use for: tendons and ligs

Answer 13

prolene, sometimes PDS

Question 14

what suture material would you use for: gastrointestinal

Answer 14

PDS II

Question 15

what suture material would you use for: urinary or urogenital

Answer 15

monocryl or PDS

Question 16

what suture material would you use for: large vessels

Answer 16

silk or staples

Question 17

what suture material would you use for: small vessels

Answer 17

PDS, vicryl, monocryl

Question 18

what is the difference between a swaged needle and an eyed needle

Answer 18

a swaged needle is attached to the suture and is single use, an eyed needle has an eye to thread suture through and these can be used multiple times

Question 19

when would you want to use a tapered needle vs a cutting needle?

Answer 19

tapered needles are for delicate tissues where you want to be careful not to cut a hole in the tissue and cause trauma

cutting needles are for rougher tissue that need to be cut in order to suture

Question 20

skin staples are fast but they _____ the tissue

Answer 20

evert

Question 21

how do you use tissue glue properly?

Answer 21

there cannot be any tension when you use it

Question 22

hat is the difference between connell and cushings patterns?

Answer 22

connell penetrates the lumen while cushing penetrates to the submucosa only

Question 23

what is the Utrecht suture pattner?

Answer 23

basically lembert but on an oblique angle used for bovine uterine closure

Question 24

for skin, what kind of needle would you want to use?

Answer 24

a cutting needle

Question 25

for sub Q, what kind of needle do you want to use?

Answer 25

a tapered needle

Question 26

for tendons, do you want to use a small suture or a big suture?

Answer 26

the biggest suture as possible!

Question 27

for suturing tendons, what kind of needle do you want to use?

Answer 27

a taper needle because you don’t want to leave a hole!

Question 28

for suturing the GI tract what kind of needle should you use?

Answer 28

a tapered one, it is delicate tissue!