Bandages, Splints & Casts in Animal Nursing

BANDAGES, SPLINTS & CASTS

Introduction

  • Overview of the importance of bandages, splints, and casts in animal nursing.

Definitions

  • Bandage: "Strip of material or gauze that is wrapped around some part of the body".
  • Splint: "A rigid appliance for fixation".
  • Cast: "A stiff dressing or casing used to immobilize body parts".
  • Degree of immobilization: Ranges from simple bandage to full cast.

Functions of Bandages

  • 10 functions of a bandage include:
    • Absorb: Aid in the absorption of exudate from wounds.
    • Protect: Shield wounds from further injury or contamination.
    • Cleanliness (antisepsis): Maintain sanitary conditions around the wound.
    • Pressure: Apply compressive force to control bleeding.
    • Immobilize: Restrict movement of the affected area.
    • Debride: Remove dead tissue or debris from wounds.
    • Pack: Fill wounds to support healing.
    • Information: Provide visible indicators of wound condition.
    • Comfort: Enhance the comfort of the patient.
    • Esthetics: Improve the appearance of the bandaged area.
  • The function and application techniques are influenced by the nature of the wound.

Reasons for Applying Bandages

  • To manage soft tissue wounds.
  • To stabilize bones and joints.

Structure of a Bandage

  • Composition: Typically made up of three layers:
    • Primary Layer: Only used when there is an existing wound; promotes healing directly at the site.
    • Secondary Layer: Provides bulk and offers support for immobilization.
    • Tertiary Layer: Keeps the bandage in position and protects the underlying layers; applies pressure if needed.

Components of a Simple Band-Aid

  • A simple Band-Aid consists of:
    • Primary non-stick pad (direct contact with the wound).
    • Absorbent secondary layer (wicks away fluid).
    • Sticky plastic tertiary layer (holds the bandage in place).

Bandaging for Wounds

  • Key considerations in bandaging:
    • Debride tissue: Removal of unhealthy tissue.
    • Deliver medication: Apply topical treatments.
    • Form an occlusive seal: Prevent contaminants.
    • Transmit wound exudate: Allow drainage.

Serosanguineous Fluid

  • Definition: Fluid that contains both serum and blood; appears yellowish with small amounts of blood.

Choosing an Appropriate Wound Dressing

  • Factors influencing wound dressing selection:
    • Phase of healing.
    • Amount of exudate present.
    • Location and depth of the wound.
    • Presence of eschar (dry, dark scabbing).
    • Amount of necrosis present.
    • Signs of infection.

Types of Dressings

  1. Adherent Dressings:

    • Functions:
      • Mechanical debridement of necrotic tissue.
      • Absorption of exudates.
    • Characteristics:
      • Short-term use, early in wound healing.
      • Can damage normal tissue upon removal.

  2. Types of Adherent Dressings:

    • Wet to Wet or Wet to Dry:
      • Uses sterile wide-mesh gauze moistened with 0.9% NaCl.
      • Indicated for necrotic tissues or viscous exudate.
      • Painful when removed.
    • Dry Adherent Dressings:
      • Large mesh gauze for low-viscosity exudate.
      • Infrequently used due to painful removal.

  3. Non-Adherent Dressings:

    • Occlusive Dressings:
      • Non-permeable; promotes epithelialization.
      • Absorptive and moisture-retentive; reduces dressing changes.
    • Semi-Occlusive Dressings:
      • Allows wound to breathe while preventing serum loss.
      • Not suitable for dirty wounds.
    • Non-Occlusive Dressings:
      • Absorbent, fine-mesh gauze for surgical incisions; does not adhere to the wound.

Layers of a Bandage

  • Primary Layer:
    • Direct contact with the wound.
    • Ideally sterile, non-adhesive, and allows drainage.
    • Materials: Telfa, gauze (wet or dry).
  • Secondary Layer:
    • Provides bulk for immobilization.
    • Typically applied with no tension; materials include Soft Roll, Kling, Gamgee.
  • Tertiary Layer:
    • Holds the bandage in place and can apply pressure for stabilization.
    • Improves aesthetic appearance.
    • Materials include Vetwrap, cast material, Ripwrap.

Principles of Bandaging (Page 65)

  • Key rules to follow when bandaging:
    1. Apply an appropriate primary layer.
    2. Start distally and work proximally.
    3. Bandage in a functional position, considering nerves and muscles.
    4. Pad depressions but avoid padding prominences to prevent pressure sores.
    5. Add extra padding for swollen areas.
    6. Use a spiral technique with ½ to 1/3 overlap.
    7. Maintain appropriate tension throughout.
    8. Leave tips of two toes exposed for circulation monitoring.
    9. Apply minimal tension with elastic bandage material (e.g., vetwrap).
    10. Ensure the bandage is comfortable and aesthetically acceptable.

Potential Complications of Bandaging

  • Complications of improper bandaging may include:
    • Swelling: Caused by poor circulation or compression.
    • Infection: Risk due to moisture retention or contamination.
    • Pressure Sores: Result from excessive pressure on tissue.
    • Necrosis: Death of tissue due to lack of blood supply.

Types of Bandages

  1. Spiral Bandages:

    • Indicated for wounds on paws or tails that do not require enclosure.
    • Easier visualization of toes and tends to stay cleaner.
    • Example: Simple bandage post-surgery for dewclaw removal.

  2. Recurrent/Spiral Bandages:

    • Used for paws or tails requiring enclosure; applicable where swelling is not a concern.
    • Example: Leg bandaged with IV catheter to prevent "fat foot".

  3. Figure 8 Technique:

    • Used when a bandage needs to go around joints or corners.
    • Should not expose the joint when flexed; repeats 3-4 times for secure coverage.
    • Example: Bandaging around elbows, stifles, or hocks.

  4. Robert Jones Bandage:

    • For temporary stabilization of distal fractures (elbow and stifle).
    • Utilizes significant cotton padding; principles include:
    1. Generous stirrups to prevent slipping.
    2. Apply 1 lb of cotton per 20 lbs of patient weight.
    3. Compress padding by half using kling tape.
    4. Expose two toes.
    5. Further compress using vet wrap.
    • Sound characteristic: Bandage should sound like a "ripe melon" when tapped.

  5. Modified Robert Jones Bandage:

    • Used for prevention of edema; provides less stabilization than the full Robert Jones method.
    • Similar steps but involves less padding for supportive purposes.

Care of Bandages

  1. Keep the bandage clean and dry.
  2. Monitor readiness twice daily for:
    • Wetness, swelling, odor, chewing/mutilation signs, cold toes, slipping.
  3. Prevent mutilation through E-collars or bitter sprays.
  4. Cover bandages when outside to avoid moisture exposure.
  5. Limit activity and start physical rehab (PROM, massage, etc.) as soon as practical.
  6. Observe for behavioral changes or appetite variations in the pet.

Specialized Bandages/Splints/Casts

  • Spica Splint: Used to stabilize, protect, and support after upper limb repair; integrates with Robert Jones bandage or a custom splint.
    • Example: Cruciate ligament rupture or elbow luxation.
  • Velpeau Sling: Prevents weight-bearing on forelimb with joints flexed against body wall.
    • Example: Scapular luxation.
  • Ehmer Sling: Prevents hind limb weight-bearing, providing internal rotation of femur to stabilize the hip.
    • Example: Treatment after hip luxation.
  • Hobbles: Used to limit movement and prevent injury in certain injuries or conditions.

Closing Remarks

  • Importance of bandaging techniques, types, and proper care for rehabilitation and recovery.