Wound Management Overview
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Questions and Answers

When removing a malignant tumor, a surgeon should excise the tumor plus a minimum of 2/3 cm of normal tissue in all directions (length, width, depth).

True (A)

Which of the following tissues are NOT typically resected during tumor removal?

  • Tendons (correct)
  • Muscle
  • Cartilage (correct)
  • Ligaments (correct)
  • A ______ suture is a type of suture that is used to reduce tension on a wound by placing sutures further away from the skin edge.

    external tension relieving

    What is the primary advantage of using axial pattern flaps over tissue expanders for large wounds?

    <p>Axial pattern flaps include a direct cutaneous artery and vein at the base of the flap, providing better perfusion compared to pedicle flaps.</p> Signup and view all the answers

    Which of the following is a method to prevent or correct 'dog ears' during wound closure?

    <p>All of the above (D)</p> Signup and view all the answers

    Match the following methods of skin stretching with their descriptions:

    <p>Pre-suture surgical incision site = Incising and pre-stretching the skin 24 hours before surgical procedure Adjustable sutures = Use of buttons or stents to tighten sutures over time Walking sutures = Continuously placing sutures in a circular motion to remove dead space Skin stretchers = Axial pattern flaps or tissue expanders that stretch the skin over time</p> Signup and view all the answers

    Dog ears are more likely to occur with thin skin.

    <p>False (B)</p> Signup and view all the answers

    What is the purpose of relaxing incisions made adjacent to a wound?

    <p>Relaxing incisions allow wound closure with reduced tension on the primary wound.</p> Signup and view all the answers

    Which of the following is NOT an appropriate method for wound debridement?

    <p>Using a garden hose to flush the wound (B)</p> Signup and view all the answers

    A horse with a wound involving the synovial joint should be prepared with sterile prep applied directly over the wound to avoid introducing new bacteria.

    <p>False (B)</p> Signup and view all the answers

    Which type of bandage is most commonly used?

    <p>Semi-occlusive (C)</p> Signup and view all the answers

    What type of suture is preferred for closing wounds in horses, and at what distance from the cut edge should it be placed?

    <p>Non-absorbable monofilament suture, placed 5mm from the cut edge.</p> Signup and view all the answers

    When applying a secondary bandage layer, it is important to apply firm, even pressure, overlapping each layer by 50% as you move upwards.

    <p>True (A)</p> Signup and view all the answers

    The preferred method for draining dead space in a wound is to use a ______ drain, placed ______.

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    What is the primary function of the tertiary bandage layer?

    <p>The tertiary bandage layer holds the other layers in place and protects the wound from external bacterial colonization.</p> Signup and view all the answers

    When applying a bandage, it is important to place ______ between the toes to prevent moisture buildup and potential complications.

    <p>cotton</p> Signup and view all the answers

    Match the following bandage types with their primary uses:

    <p>Tie-Over Bandage = Wounds in inaccessible areas Pressure Bandage = Control hemorrhage, edema, and excess granulation tissue Robert Jones Bandage = Immobilization, large/thick bandage, helpful with transportation Spica Splint = Immobilization of the shoulder Ehmer Sling = Post hip reduction or acetabular fractures Velpeau Sling = Post shoulder/forelimb procedures</p> Signup and view all the answers

    Which of the following is NOT a key aspect to look for when checking a bandage?

    <p>Pulse rate (C)</p> Signup and view all the answers

    Open fractures should be casted in a similar way to closed fractures.

    <p>False (B)</p> Signup and view all the answers

    What is the primary step in wound management for large animal?

    <p>Stopping the bleeding.</p> Signup and view all the answers

    What is the most common form of surgical site infection (SSI)?

    <p>Staphylococcus aureus (C)</p> Signup and view all the answers

    Antisepsis can completely sterilize the skin without affecting the natural protective function.

    <p>False (B)</p> Signup and view all the answers

    What is the time frame within which a surgical site infection must occur for it to be classified as such?

    <p>within 30 days of procedure or within a year of implant</p> Signup and view all the answers

    ___________ is preferred over Povidone Iodine for surgical site preparation.

    <p>Chlorhexidine Gluconate</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Superficial SSI = Infection occurring in the skin or subcutaneous tissue Deep SSI = Infection occurring in the muscle and fascia Organ/space SSI = Infection of an anatomically manipulated part Antimicrobial prophylaxis = Preventive treatment to reduce infection risk</p> Signup and view all the answers

    Which surgical wound classification involves a major break in technique with gross spillage from the GI tract?

    <p>Contaminated (C)</p> Signup and view all the answers

    Antibiotics are always necessary after surgery, regardless of the procedure.

    <p>False (B)</p> Signup and view all the answers

    What is the recommended fasting period for equines before surgery?

    <p>overnight with water access</p> Signup and view all the answers

    IV fluids may be needed for a patient with ______ due to dehydration.

    <p>hypoproteinemia</p> Signup and view all the answers

    Match the following conditions with their interventions:

    <p>Dehydration = IV fluids Anemia = Blood transfusion Electrolyte imbalances = IV fluids +/- electrolytes Hypoproteinemia = Colloids</p> Signup and view all the answers

    What technique involves undermining wound edges with scissors?

    <p>Deep closure (B)</p> Signup and view all the answers

    Camelids require a 24-hour fast without water prior to surgery.

    <p>False (B)</p> Signup and view all the answers

    What should be used to avoid tissue trauma when performing procedures on male dogs?

    <p>Sterile towel clamp (A)</p> Signup and view all the answers

    The tips of towel clamps are considered sterile when placed through the skin.

    <p>False (B)</p> Signup and view all the answers

    What is the most important question to consider when working in the field?

    <p>Does what I’m doing compromise my own or patient’s safety?</p> Signup and view all the answers

    What type of sutures are typically used for skin closures in male dogs?

    <p>Nonabsorbable vertical mattress sutures</p> Signup and view all the answers

    Ultrasound adds __________ but is not definitive.

    <p>information</p> Signup and view all the answers

    Match the healing types with their characteristics:

    <p>Primary Healing = Wound heals directly with minimal scar tissue Delayed Secondary Healing = Wound heals after infection or delayed closure Proud Flesh = Excess granulation tissue that obstructs healing</p> Signup and view all the answers

    What is the recommended method for treating a wound for 7 days?

    <p>Wettodry bandage (D)</p> Signup and view all the answers

    Soiled sponges should not be placed back onto the __________.

    <p>instrument table</p> Signup and view all the answers

    Saline lavage is irrelevant in the management of wounds.

    <p>False (B)</p> Signup and view all the answers

    What type of suture is preferred for closing wounds in horses?

    <p>Non-absorbable monofilament (C)</p> Signup and view all the answers

    It is recommended to apply a sterile prep directly over a wound to avoid introducing bacteria.

    <p>False (B)</p> Signup and view all the answers

    What is the most common complication arising from improper bandaging in equine medicine, specifically related to granulation tissue?

    <p>Excessive granulation tissue formation</p> Signup and view all the answers

    Before taking a horse to surgery or euthanizing, the most important thing to ensure is __________ between the referring veterinarian, owner, and insurance company.

    <p>communication</p> Signup and view all the answers

    Match the following wound terms with their definitions:

    <p>Bone sequestration = Dead/infected bone piece potentially harming blood supply Cellulitis = Severe edema with small wound causing lameness Drainage = Removal of dead space to prevent exudate accumulation Wound debridement = Removal of non-viable tissue from a wound</p> Signup and view all the answers

    What is the preferred method of draining dead space in a wound?

    <p>Both A and B (B)</p> Signup and view all the answers

    A horse that has been vaccinated for more than 2 months does not require a booster.

    <p>False (B)</p> Signup and view all the answers

    What is the primary risk of local anesthesia in large animals?

    <p>Hypotension</p> Signup and view all the answers

    Flashcards

    Benign tumor excision

    Remove benign tumor plus 1cm of normal tissue around it.

    Malignant tumor excision

    For malignant tumors, remove the tumor plus more than 2/3cm of normal tissue.

    Tissue resistance

    Cartilage and collagen-dense tissues do not require excision due to their resistance to neoplasia.

    Pre-suture technique

    Suture the incision site 24 hours before to stretch the skin for better closure.

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    Adjustable sutures

    Sutures that can be tightened over time, using buttons or stents.

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    Skin stretchers

    Axial pattern flaps are preferred for large wounds for better perfusion.

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    Preventing dog ears

    Place sutures closer on convex and farther on concave to avoid puckering.

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    Relaxing incisions

    Made adjacent to a wound to reduce tension during closure.

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    Secondary layer (bandaging)

    Decreases bacteria and provides extra padding; examples include splints and pads.

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    Tertiary/outer layer

    Holds the bandage in place and protects from bacteria; examples include Vet wrap.

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    Pressure bandage

    Controls minor hemorrhage, edema, and excess granulation tissue.

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    Ehmer sling

    Used post hip reduction to prevent pelvic limb weight bearing.

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    Robert Jones bandage

    A large, thick bandage used for immobilization and during transport.

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    Most important checks for bandages

    Check for cleanliness, dryness, odor, and toe temperature.

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    Tie-Over bandage

    Used for inaccessible wounds, held together by heavy string.

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    Wound management first step

    Stop the bleeding immediately for effective wound care.

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    Tetanus management

    If not vaccinated in >12 months, give toxoid and anti-toxin.

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    Booster requirement

    Vaccinated < 2 months = no booster; > 2 months = booster needed.

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    Suture preference

    Use non-absorbable monofilament sutures like Ethilon or Polypropylene.

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    Wound dehiscence warning

    Always inform owners about the risk of wound opening.

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    Bone sequestration

    Dead/infected bone can harm blood supply; requires removal.

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    Drainage necessity

    Drainage prevents dead space and exudate accumulation.

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    Granulation tissue

    Excessive can create hypoxic bandage environment; avoid bandaging.

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    Euthanasia protocol

    Ensure second witness present, document all discussions.

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    Equine risk factors

    Factors affecting surgical outcomes in horses, such as age and size.

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    Surgical wound classifications

    Categories of wounds based on contamination and technique used.

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    Clean surgical wound

    No infection or technique breaks, remains sterile.

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    Contaminated surgical wound

    Major technique break with gross spillage; high infection risk.

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    Fasting requirements for horses

    Horses require overnight fasting with water access before surgery.

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    Suture patterns

    Specific techniques used for closing wounds to minimize tension.

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    Direction of surgical incisions

    Make incisions parallel to skin tension lines for better healing.

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    Patient safety question

    Most important question to ask: Does this compromise safety?

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    Surgical Site Infection (SSI)

    An infection occurring at the surgical incision site, often caused by endogenous microbes.

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    Organ/Space Infection

    An infection that develops in anatomic parts manipulated during surgery, must occur within 30 days or a year of implant.

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    Antimicrobial Prophylaxis

    Use of antibiotics before surgery to prevent infections.

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    Chlorohexidine Gluconate

    An antiseptic agent preferred over Povidone Iodine for skin preparation before surgery.

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    Preoperative Skin Preparation

    The process of clipping and disinfecting skin around surgery site to minimize infection risk.

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    Clamp Prepuce

    Using a towel clamp to secure the prepuce of male dogs to prevent tissue trauma.

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    Towel Clamps Sterility

    The tips of towel clamps are non-sterile if placed through the skin.

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    Do NOT reuse soiled sponges

    Soiled sponges should not be placed back onto the instrument table to prevent infection.

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    Ultrasound Information

    Ultrasound can provide information but is not definitive in diagnoses.

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    Delayed Healing

    Delayed healing can occur if wounds are not examined daily.

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    Wet-to-Dry Bandages

    Wet-to-dry bandages are used for a few days, then the wound should be left open.

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    Muscle Suture Type

    Absorbable sutures should be used for muscle layers to ensure proper healing.

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    Nonabsorbable Skin Suture

    Nonabsorbable sutures, like vertical mattress sutures, are used on the skin for strong closure.

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    Study Notes

    Wound Management

    • Golden period: 6-8 hours after wound contamination, before bacterial multiplication exceeding 105 CFU/gram of tissue.
    • Contaminated vs. infected: assessed based on the number of microbes.
      • Contaminated: presence of microbes in the first few hours without substantial multiplication.
      • Infected: bacterial count greater than 105 CFU, indicating invading and replicating microbes.
    • Wound classifications (based on time):
      • Class 1: 0-6 hours, minimal contamination.
      • Class 2: 6-12 hours, microbes haven't reached infection levels.
      • Class 3: > 12 hours, microbial levels exceed 105 CFU/gram, indicating infection.
    • 6 major wound types: abrasion, puncture, laceration, and avulsion, with degloving being a specific type of avulsion, presenting extensive skin loss. Also, thermal burns are a major wound caused by heat or chemicals, with a high risk of sepsis and infection.
      • Abrasion: superficial, minor bleeding, heals fast by re-epithelialization.
      • Puncture: small skin openings with deep damage; extent correlates with projectile velocity.
      • Laceration: created by tearing, can be deep or superficial.
      • Avulsion/Degloving: tearing of tissues from attachments with extensive skin loss.
      • Thermal burn: caused by heat or chemicals, high sepsis risk.

    Wound Healing

    • Primary wound closure: involves apposing wound edges immediately (<12 hours in equine).
    • Secondary closure: delayed primary closure, involving wound closure after debridement within 3-5 days in equine.
    • Healing by contraction and epithelialization: 2nd intention, where wound heals open.

    Wound Debridement

    • Removal of dead tissue, foreign bodies, and microbes to promote healing and prepare for primary or delayed closure.
    • Types: sharp, mechanical (wet-to-dry bandages), autolytic.
    • Use of specific topical antimicrobial agents
      • Silver sulfadiazine: commonly used for burn wounds.
      • Nitrofurazone: broad-spectrum agent effective against a range of bacteria.
      • Honey: Promotes wound healing, decreases inflammation, improves granulation tissue, and improves wound nutrition.

    Bandaging

    • Bandaging layers (in horses):
      • Primary (contact): transfers exudates, permits breathability.
      • Secondary (intermediate): inhibits bacteria, provides additional padding.
      • Tertiary (outer): provides protection from external bacteria & other elements.
    • Types of bandages: tape stirrups, soft padded, vet wrap, tie-over.
    • Important considerations in bandaging: pressure sores, edema, and appropriate placement.

    Surgical/Medical Considerations

    • Antibiotics: only used for severe wounds older than 6-8hrs and/or surgical complications.
    • Lavage: reduces bacterial numbers.
    • Casts for fracture: limb in standing position for at least 2 weeks post-casting, with more padding = less immobilization; limb MUST be appropriately set and monitored. Always identify underlying structures. Most important consideration = clean, dry, odor-free, and normal toe temperature (cyanosis is a significant concern).
    • Surgical complications: excessive granulation, hypoxic environment, pressure sores, bandage bows (tendon inflammation); important to communicate with owner and insurance company (if applicable).
    • Importance of wound debridement and meticulous wound care.
    • Complications of LA anesthesia: hypotension must be addressed, longer time under anesthesia.
    • Surgical classification system: clean, clean-contaminated, contaminated, dirty.
    • Patient stabilization: addresses dehydration, anemia, electrolyte imbalances, and hypoproteinemia, as necessary before surgery. Prioritize administering IV fluids as needed.

    Additional Topics

    • Decubital ulcers: pressure sores, compression of skin and soft tissues between bony prominences and hard surfaces.
    • Surgical site infections: superficial vs. deep, classification of CDC types. Note that infected patients experience a higher mortality rate than non-infected.
    • Bone sequestration: dead/infected bone requiring surgical removal.
    • Cellulitis: serious swelling usually associated with wounds.
    • Risk assessment for equine patients pre and post-op, including appropriate ASA risk assessment scale.

    Important Concepts

    • Always be aware of dehiscence (wound opening).
    • Pre-operative preparation (patient history, physical exam, diagnostics of lab data, ASA classification, etc.).
    • Post-operative care.
    • Appropriate wound management for specific wound types (location, size, and depth determine optimal approach).
    • Maintain clear, open communication with owners. Always prioritize patient safety.

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    Description

    Test your understanding of wound management principles, including the golden period for treatment, the classification of contaminated and infected wounds, and the various types of wounds. This quiz covers essential concepts that are critical for effective wound care and prevention of infection.

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