theatre - managment of instruments and materials

Question 1

when does absorbable suture material lose its tensile strength?

Answer 1

10-40 days

Question 2

when is absorbable suture material totally absorbed?

Answer 2

40-180 Days

Question 3

how is absorbable suture material absorbed?

Answer 3

natural absorbable suture material is removed by phagocytosis
sythetic absorbable suture material is removed by hydrolysis

Question 4

how long does non- absorable suture material maintain tensile strength?

Answer 4

60 days

Question 5

surgical catgut tensile strength, absorbable or non-absorbable, natural or synthetic and mono or multi filament?

Answer 5

7-10days.
absorbable
natural
can be either mono or multifilament

Question 6

Polyglycolic acid - common name, absorbable or non-absorbable, natural or synthetic, mono or multi-filament and tensile strength?

Answer 6

Dexon
absorbable 
synthetic
multifilament
80% lost after 14 days

Question 7

Polyglactin - common name, absorbable or non-absorbable, natural or synthetic, mono or multi-filament and tensile strength?

Answer 7

Vicryl, 
absorbable
synthetic 
multifilament
50% lost after 14 days

Question 8

polydioxanone - common name, absorbable or non-absorbable, natural or synthetic, mono or multi-filament and tensile strength?

Answer 8

PDS
absorbable 
synthhetic
mono-filament
strength retained after 28 days

Question 9

silk - mono or multi-filament, absorbable or non-absorbable, natural or synthetic and tensile strength?

Answer 9

multi-filament,
non absorbable
natural
30% lost after 14 days and 60 % lost after 30 days

Question 10

polypropylene - common name, absorbable or non-absorbable, natural or synthetic, mono or multi-filament and tensile strength?

Answer 10

Proplene
non ansorbable 
synthetic
mono-filament
high tensile strength but may stretch.

Question 11

polyamide - common name, absorbable or non-absorbable, natural or synthetic, mono or multifilament and tensile strength?

Answer 11

ethilon and supramid
non absorbable 
synthetic
can be either
high tensile strength

Question 12

stainless steel - absorbable or non-absorbable, natural or synthetic, mono or multi-filament and tensile strength?

Answer 12

non absorbable
synthetic
can be either
high tensile strength

Question 13

what should you do when selecting suture material size?

Answer 13

select the smallest size possible for each body part and size of the animal.

Question 14

USP = what size metric?
5/0 =?
4/0=?
3/0=?
2/0=?
0=?
1=?
2=?
3=?

Answer 14

1
1.5
2
3
3.5
4
5
6

Question 15

What suture material is best for skin?

Answer 15

Monofilament nylon or polypropylene. metal staples

Avoid material with capillary action

Question 16

What suture material is best for subcutis?

Answer 16

fine synthetic absorbable with minimal tissue reaction.

polydioxanone, polyglactin or polyglycolic acid.

Question 17

What suture material is best for muscle?

Answer 17

synthetic absorbable or non absorbable nylon

Question 18

What suture material is best for fascia?

Answer 18

synthetic non absorbable if prolonged strength required

Question 19

What suture material is best for hollow viscera ?

Answer 19

synthetic absorbable or polypropylene in bladder. monofilament synthetic

Question 20

What suture material is best for tendon?

Answer 20

nylon, polypropylene, stainless steel

Question 21

What suture material is best for blood vessels?

Answer 21

polyproylene, silk is the least thrombgenic.

Question 22

What suture material is best for eyes?

Answer 22

synthetic absorbable. polyglactin, polydioxanone

Question 23

What suture material is best for nerves?

Answer 23

nylon or polypropylene

Question 24

difference between swagged on needles and eyed needles?

Answer 24

swagged are atraumatic as they are attached to the suture material. eyed needles need to be threaded. they are less expensive but but might cause increase tissue damage.

Question 25

suggested uses for round bodied needles?

Answer 25

Delicate tissues - i.e fat, thin walled viscera.

Question 26

suggested uses for cutting needles?

Answer 26

skin and other dense tissue.

Question 27

suggested uses for reverse cutting needles?

Answer 27

skin and other dense tissues

Question 28

suggested uses for taper cut needles?

Answer 28

dense tissues other than skin i.e fascia, thick walled viscera, mucous membranes.

Question 29

which suture pattern brings the tissue together in direct apposition ?

Answer 29

Apposing

Question 30

which suture pattern tends to turn the edges of a wound outwards?

Answer 30

everting

Question 31

which suture pattern turn the tissues inwards?

Answer 31

inverting

Question 32

what do you need to be careful of with basic knots?

Answer 32

them being too tight as they compromise the blood supply and cause irritation, enhance infection and delay healing.

Question 33

What might staples be used for?

Answer 33

Skin closure, lung lobectomies, liver biopsies and bowel resection.

Question 34

when are drains used?

Answer 34

Repeated lavage of a space repeated aspiration of fluid (or air) from a space prevention of accumulation of fluid in a space

Question 35

what is the difference between passive drains and active drains?

Answer 35

passive rely on gravity and active have a suction apparatus on one end.

Question 36

why might chest drains have a radiopaque marker down the side of them?

Answer 36

so that their position can be checked

Question 37

how should swabs be disposed of?

Answer 37

Infectious clinical waste

Question 38

How should suction bottle contents be disposed of?

Answer 38

abdorbent material and clinical waste

Question 39

How should body tissue be disposed of?

Answer 39

Clinical waste

Question 40

definition - breaking strength per unit of tissue.

Answer 40

Tensile strength

Question 41

definition - every suture is weakest where it is tied. Often the strongest material has the poorest knot security

Answer 41

knot security

Question 42

definition - response of the tissue to the suture material

Answer 42

tissue reactions

Question 43

definition - degree of the fictional force developed as the material is pulled through the tissue.

Answer 43

tissue drag

Question 44

definition - attraction of the fluid along the length of the material

Answer 44

capillary

Question 45

definition - tendency of the material to return to its original shape.

Answer 45

Memory

Question 46

definition - lack of smoothness as the throw is tightened down.

Answer 46

chatter