First Aid & Wound Management 2 Flashcards

1
Q

What are catheters for?

A
  • catheters allow venous access for:
    - fluid therapy
    - pain medications
    - emergency drugs
    - induction of anaesthesia
  • all patients presented for an emergency must have a catheter placed
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2
Q

What are some emergency situations where an endotracheal tube is required?

A
  • status epilepticus (seizure lasting more than 5 minutes)
  • airway obstruction
  • distressed patients (require sedation/anaesthetisation)
  • collapsed
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3
Q

Describe how to place an endotracheal tube.

A
  • choose the ET tube of appropriate size
  • inflate the cuff
  • lubricate the end of the ET tube with local anaesthetic gel
  • intubation is performed on a patient under general anaesthesia with Intravenous catheter placed and in lateral/sternal recumbency
  • assistant holds the maxilla
  • tongue is caught by gauze compress and pulled out of oral cavity
  • head is bent backward to allow better visualisation of airway
  • laryngoscope is inserted into oral cavity
  • when laryngeal entrance is opened, ET tube is inserted
  • secure tube by non-elastic bandage around mandibular
  • check the position, compress thorax and check the air flow
  • inflate the cuff
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4
Q

What are immediate treatments for haemorrhage (bleeding)?

A
  • direct pressure: pressure bandages (preferable); digital pressure; additional layer of bandage can be applied if required
  • tourniquet (only on distal limbs): applied above the wound; very temporary option only
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5
Q

What must you remember about pressure bandages?

A
  • must be removed

- if left for too long, can cut of blood circulation

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6
Q

What is a seizure?

A
  • a seizure is a sudden, involuntary electrical disturbance in the brain that causes changes in the behaviour, movements and consciousness of an animal
  • a classic seizure is known as a grand mal seizure
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7
Q

What are some characteristics of a grand mal seizure?

A
  • loss of consciousness
  • violent bodily movements
  • typically lasts up to a minute
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8
Q

What is the role of a veterinary nurse in treatment of a patient with seizures?

A
  • ensure the patient has soft blankets/towels
  • is free of any obstruction that may cause physical injury
  • call the vet
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9
Q

What are some treatments for seizures?

A
  • vet may administer anti-seizure drugs (e.g. diazepam)
  • IV catheter
  • sedation + maybe intubation (if required)
  • ongoing monitoring
  • intravenous fluid therapy (IVFT)
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10
Q

How to diagnose cyanosis and what are the treatments for cyanosis?

A
  • the presence of blue/purple mucous membranes (except for in chowchows)
  • patients with cyanotic membrane have a severe lack of oxygen
    (- can be due to heart/lung disease or obstruction of airway)
  • requires oxygen support immediately (intubation, by mask, flow by)
  • Treatment: oxygen support, IV catheter, spO2 (oxygen level) monitoring, primary cause needs to be treated
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11
Q

A patient is in cardiopulmonary arrest if…

A
  • they are not breathing

- they are non-responsive

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12
Q

What is the treatment for cardiopulmonary arrest (CPA)?

A
  • cardiopulmonary resuscitation (CPR)
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13
Q

What is heat stroke?

A
  • most serious form of heat injury (mild heat injury: heat stress)
  • caused by the body overheating
  • usually a result of prolonged exposure to or physical exertion in high temperatures
  • potentially fatal
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14
Q

What are some risk factors of heat stroke?

A
  • brachycephalic breeds
  • overweight
  • large and giant breeds
  • thick hair coat
  • poor husbandry (unable to escape the heat)
  • pre-existing medical conditions (heart disease, dehydration)
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15
Q

What are the clinical signs of heat stroke?

A
  • increased resting respiratory rate
  • increated heart rate
  • excessive drooling and panting
  • reddened gums
  • agitation
  • increased cor temperature (>39.3°C)

If severe:

  • refusing to lay down or get up
  • seizures
  • unresponsive
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16
Q

What are the treatments for heat stroke?

A
  • intravenous fluid therapy
  • active cooling (fans/damp towels)
  • tranquillizers/sedatives (depends)
  • intubation and ventilation (depends)
17
Q

State the 2 main classifications of wounds.

A
  • open wound

- closed wound

18
Q

State the types of open wounds.

A
  • abrasion
  • laceration
  • avulsion
  • incision
  • puncture
19
Q

what is an abrasion?

A
  • loss of epidermis and part of the dermis (aka partial thickness wound)
20
Q

What is a laceration?

A
  • irregular wound caused by tearing, which produces superficial and underlying tissue damage
  • can be full or partial thickness
21
Q

What is an avulsion?

A
  • tearing of tissue from its attachments
22
Q

What is an incision?

A
  • wound created by a scalpel blade, resulting in wound edges with minimal tissue trauma
23
Q

What is a puncture?

A
  • penetrating wound caused by a sharp object
  • minimal skin damage but underlying tissue damage may be severe
  • higher risk of infection
24
Q

Explain what the two types of closed wounds are.

A
  • contusion (aka a bruise): blunt-force trauma that doesn’t break the skin but causes damage to the skin and underlying tissue
  • crushing injury: force applied to an area of the body over a period of time
25
Q

What are the 4 phases of wound healing?

A
  • haemostasis
  • inflammatory
  • proliferative
  • maturation
  • process is dynamic and the phases overlap
26
Q

Describe the haemostasis phase of wound healing.

A
  • the phase in which a wound is closed by clotting
  • occurs within minutes
  • wound bleeds
  • vasoconstriction to decrease blood flow
  • platelets stick together to seal the break in the wall
  • coagulation helps to strengthen platelet plug by forming a fibrin clot
27
Q

Describe the inflammatory phase of wound healing.

A
  • begins right after injury
  • injured blood vessels leak transudate (filtrate of blood)
  • swelling occurs which is inflammation, aids hemostasis and decreases infection
  • allows repair cells to move to the site of the wound
  • swelling, heat, pain and redness are normal for this phase
  • lasts approximately 4-6 days
28
Q

Describe the proliferative phase of wound healing.

A
  • wound is rebuilt with new tissue made up of collagen and extracellular matrix
  • disorganised because wound is thick
  • wound contracts as new tissues are built
  • new network of vessels built
  • wound contraction occurs
  • epithelialization happens faster when wounds are kept moist and hydrated (epithelial cells migrate upwards and repair the wounded area)
29
Q

Describe the maturation phase of wound healing.

A
  • AKA remodeling phase
  • collagen is remodelled (type III to type I) and the wound closes
  • cells that are no longer required are removed by apoptosis
  • collagen reorganised and crosslinked (scar is thinner and stronger)
  • long process and can take up to a year
30
Q

What comprises of the second intention of methods of wound healing?

A
  • healing via granulation (granulation tissue from proliferative phase)
  • wounds are left open
  • good for infected wounds
  • often used when there is insufficient skin to close a wound
  • always requires a dressing
31
Q

What are the factors affecting the wound healing?

A

Host factors:
- age of the animal
- body condition
- concurrent disease
Wound characteristics:
- presence of foreign material, drains and implants
- type of wound: clean incision vs laceration with jagged edges
- presence of infection
External factors
- drug interactions (e.g. steroids suppresses inflammation