If the vaccine status of a horse presenting with a wound is unknown, what needs to be done? What if you know the horse is unvaccinated?
Unknown: Booster with tetanus toxoid
Unvax'd: Tetanus toxoid + Tetanus antitoxin
How much blood (%) does a horse have?
When is the golden period of wounds in horses?
Does not exist in horses
In other animals = period of time before there is less then 10^5 bacteria/g of tissue
What type of closure/healing is it if it occurs 2-5 days after the injury before granulation tissue is formed?
Delayed primary closure
What do you do if you anticipate complications due to dead space?
If you anticipate flap necrosis upon closure of a large non-penetrating thoracic wound, what can you do?
Use flap as 'natural band-aid', debride and close
Wait 3-5 days for tissue to declare itself
Manage client expectations
What are the 3 phases of wound healing?
What initiates (3 things) angiogenesis during wound healing?
Decreased O2 tension
Low pH (in wound)
What type of collagen is layed down during wound healing?
Type III (40%) which shifts to type I as wound remodels
What is the single most important factor for successful wound healing? What are the 3 types of this?
Sharp, Irrigation (hydraulic), Direct contact
When lavaging a wound it is important to use the appropriate ______ and appropriate _______.
T/F: Ointments are likely to slow the epithelialization of a wound.
Which antimicrobial dressing contains the active agent PHMB to which microbes are unable to become resistant?
Dr. Little's fav
Name these 5 joints
Which structure is indicated by the blue scribbles?
What 2 structures are you concerned about with a pastern laceration?
Tendon sheath (of digital flexor)
What structure are you concerned about with a puncture wound to the sole/frog?
What structure are you concerned about with a heel bulb laceration?
What type of wound closure would you choose?
Second intention (debride and bandage)
What type of wound closure would you choose given this occured a few hours ago?
(debride, lavage, banadage q24-48 hrs, then close)
Why do eyelid lacterations have to be repaired surgically?
Globe must stay protected (function of lid maintained)
What must you ensure when closing an eyelid laceration?
Must align eyelid margin
Protect eye from trauma during suturing
Keep suture from irritating eye when repair is complete
Close in 2 layers (conjunctiva and skin)
Why would you use stent sutures when closing a lip laceration?
To minimize risk of pull through during healing
Also remember at least 2-layer closure
What is proud flesh? How is it treated?
Excessive granulation tssue
Tx: Resection and bandage, delayed secondary closure, skin grafts
Excessive granulation tissue is most likely to occu in which of the following locations?
b. Pectoral region
d. Head and neck
What is the single most important factor for a successful skin graft?
Recipient bed preparation
Which type of graft, full thickness or split thickness, will look better? Which has better survivability?
Full looks better
Split has beeter survivability
T/F: When preparing a punch graft, the recipient holes are made with a smaller punch biopsy.
What are the 3 main reasons for graft failure?
Hemorrhage (fluid accumulation)
What can you do to conform a split thickness sheet graft to an irregular surface?