LASx Exam 1: Wound Management Flashcards

1
Q

T/F: The golden period of wounds in horses is the period of

time where there is less than 10^5 bacteria per gram of tissue

A

FALSE! THERE IS NO GOLDEN PERIOD IN EQUINE WOUNDS!

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2
Q

What type of closure have you done if you close a wound 2 to 5 days after injury, but before granulation tissue production?

A

Delayed primary closure

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3
Q

What type of closure have you done if you close a wound 5 or more days after injury, and granulation tissue is present?

A

Secondary closure

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4
Q

T/F: Epithelialization starts IMMEDIATELY after wounding

A

TRUE

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5
Q

Collagen deposition begins ______ days after wounding

A

2 - 3 days

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6
Q

What is angiogenesis initiated by?

A

Decreased oxygen tension

Increased lactate

Decreased pH in the wound

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7
Q

The final scar after wounding is ______% weaker than original

A

15 - 50 % weaker

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8
Q

What is the best type of debridement in equine patients?

A

Sharp and autolytic

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9
Q

What is the best thing to use for wound lavage?

A

SALINE! (not dilute antiseptics)

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10
Q

T/F: Nitrofurazone is a good topical agent for treatment of wounds

A

FALSE! It is carcinogenic

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11
Q

_______ is the most common hypertonic saline dressing and

is used for exudative or necrotic wounds

A

CURASALT

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12
Q

What is the best antimicrobial dressing for post-op wounds

to prevent infection

A

KERLIX AMD

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13
Q

What is the active antimicrobial agent of Kerlix AMD?

A

Polyhexamethylene Biguanide (PHMB)

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14
Q

T/F: Corticosteroids are good for reducing granulation tissue

formation in acute wounds

A

FALSE! NEVER USE CORTICOSTEROIDS

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15
Q

In the equine there are differences in healing based on

wound locations.

BODY wounds are more efficient at contraction ( ____ mm/day)

and

LIMB wounds are slow at contraction ( ____ mm/day)

A

Body (1 mm/day)

Limb (0.2 mm/day)

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16
Q

The best way to close a distal limb wound is with

___________ closure

A

PRIMARY closure (and tight bandages)

17
Q

How do you treat proud flesh of a distal limb wound?

A

Resection + bandage + delayed secondary closure +/- skin grafts

18
Q

Why does proud flesh occur?

A

Inefficient protracted inflammatory phase results in

excessive proliferation phase

19
Q

T/F:

You must anesthetize when removing proud flesh

A

FALSE- exuberant granulation tissue is void of nervous tissue- it is just fibroblasts and capillaries and is not painful

20
Q

What is the most important step in skin grafting?

A

Granulation bed preparation!

Determines if the graft will fail or not

21
Q

What is the most common bacteria with granulation tissue

and grafting?

A

Pseudomonas

22
Q

What is the most effective topical Abx therapy

against pseudomonas- the most common bacteria with

granulation tissue and skin grafting?

A

TICARCILLIN

23
Q

A skin graft that remains connected to the donor site is called a

A

pedicle graft

24
Q

This type of graft requires a dermatome

A

Split-thickness graft

25
Q

What are the two steps that occur during revascularization

of a new graft and when do they occur?

A

Inosculation - 48 hours

Neovascularization - 4 - 5 days

26
Q

In a horse, where do you harvest tissue for a punch graft?

A

Under the mane or the ventrolateral abdomen.

Must excise SQ fascia and fat!

27
Q

For a punch graft, recipient holes are placed _____ mm apart

in a symmetrical pattern, and recipient holes

must be _______ than the donor holes

A

6 mm apart

Recipient holes must be smaller than the donor holes

28
Q

T/F:

Full thickness sheet grafts resist trauma better than split thickness

grafts, but are much more fragile

A

TRUE

29
Q

What is the purpose of meshing sheet grafts?

A

Allow the graft to cover a wound larger than itself AND

PREVENT FLUID from disrupting graft from fibrinous and vascular attachments

30
Q

T/F:

Clean, healthy granulation tissue is needed at the

recipient site of a free graft

A

TRUE

31
Q

Which topical Abx do you use 24 - 48 hours prior to

grafting on the recipient site?

A

TICARCILLIN

32
Q

Which two bacterias can infect a wound at much lower

concentrations in the horse?

A

B-hemolytic strep and pseudomonas