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Veterinary - koren > theatre - managment of instruments and materials > Flashcards

theatre - managment of instruments and materials Flashcards

1
Q

when does absorbable suture material lose its tensile strength?

A

10-40 days

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2
Q

when is absorbable suture material totally absorbed?

A

40-180 Days

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3
Q

how is absorbable suture material absorbed?

A

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

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4
Q

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

A

60 days

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5
Q

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

A

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

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6
Q

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

A 
Dexon
absorbable 
synthetic
multifilament
80% lost after 14 days
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7
Q

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

A 
Vicryl, 
absorbable
synthetic 
multifilament
50% lost after 14 days
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8
Q

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

A 
PDS
absorbable 
synthhetic
mono-filament
strength retained after 28 days
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9
Q

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

A

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

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10
Q

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

A 
Proplene
non ansorbable 
synthetic
mono-filament
high tensile strength but may stretch.
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11
Q

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

A 
ethilon and supramid
non absorbable 
synthetic
can be either
high tensile strength
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12
Q

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

A

non absorbable
synthetic
can be either
high tensile strength

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13
Q

what should you do when selecting suture material size?

A

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

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14
Q 
USP = what size metric?
5/0 =?
4/0=?
3/0=?
2/0=?
0=?
1=?
2=?
3=?
A 
1
1.5
2
3
3.5
4
5
6
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15
Q

What suture material is best for skin?

A

Monofilament nylon or polypropylene. metal staples

Avoid material with capillary action

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16
Q

What suture material is best for subcutis?

A

fine synthetic absorbable with minimal tissue reaction.

polydioxanone, polyglactin or polyglycolic acid.

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17
Q

What suture material is best for muscle?

A

synthetic absorbable or non absorbable nylon

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18
Q

What suture material is best for fascia?

A

synthetic non absorbable if prolonged strength required

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19
Q

What suture material is best for hollow viscera ?

A

synthetic absorbable or polypropylene in bladder. monofilament synthetic

20
Q

What suture material is best for tendon?

A

nylon, polypropylene, stainless steel

21
Q

What suture material is best for blood vessels?

A

polyproylene, silk is the least thrombgenic.

22
Q

What suture material is best for eyes?

A

synthetic absorbable. polyglactin, polydioxanone

23
Q

What suture material is best for nerves?

A

nylon or polypropylene

24
Q

difference between swagged on needles and eyed needles?

A

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.

25
Q

suggested uses for round bodied needles?

A

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

26
Q

suggested uses for cutting needles?

A

skin and other dense tissue.

27
Q

suggested uses for reverse cutting needles?

A

skin and other dense tissues

28
Q

suggested uses for taper cut needles?

A

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

29
Q

which suture pattern brings the tissue together in direct apposition ?

30
Q

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

31
Q

which suture pattern turn the tissues inwards?

32
Q

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

A

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

33
Q

What might staples be used for?

A

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

34
Q

when are drains used?

A

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

35
Q

what is the difference between passive drains and active drains?

A

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

36
Q

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

A

so that their position can be checked

37
Q

how should swabs be disposed of?

A

Infectious clinical waste

38
Q

How should suction bottle contents be disposed of?

A

abdorbent material and clinical waste

39
Q

How should body tissue be disposed of?

A

Clinical waste

40
Q

definition - breaking strength per unit of tissue.

A

Tensile strength

41
Q

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

A

knot security

42
Q

definition - response of the tissue to the suture material

A

tissue reactions

43
Q

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

A

tissue drag

44
Q

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

45
Q

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

46
Q

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

Veterinary - koren (20 decks)

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