Wound Management and Surgical Products

Comprehensive practice flashcards covering wound types, normal and deficient healing processes, cleansing principles, debridement methods, ideal dressing characteristics, and major classes of wound dressings with brand examples and clinical indications.

What is the clinical definition of a wound?

A disruption of tissue integrity that is typically associated with a loss of substance.

How are complicated wounds defined?

Deeper injuries extending to the muscle tissue, the skeletal system, or the inner organs.

What is the primary aim of wound healing?

To minimize scarring.

What are the four core aims of wound healing outlined in wound care?

1. Facilitate hemostasis; 2. Decrease tissue loss; 3. Promote wound healing; 4. Minimize scar formation.

Why is wound healing considered a systemic rather than purely local process?

Wound healing is highly determined by the overall condition of the afflicted organism.

Which patient health factors must be assessed when evaluating general health in wound management?

Age, nutrition, psychological state, drug therapies, and underlying disease processes.

Which parameters must be evaluated during the assessment of a patient's local wound condition?

Type of wound, stage of wound healing, degree of exudates and slough, and presence of complications.

What causes a cut wound, and what are its physical characteristics?

Cuts occur upon acute violent impact, presenting as a clean cut, often heavily bleeding, with slightly dehiscent wound edges.

Why do cut wounds carry little risk of wound infection?

The heavy bleeding of the wound ensures good natural cleansing.

What defines a stab wound, and what is its typical external appearance?

It occurs upon pointed violent impact and characteristically features a small surrounding wound area.

What clinical investigation is necessary when deep penetration of a stab wound is suspected?

A medical examination is necessary to establish possible injury to underlying body cavities, such as joints or the abdominal region.

What causes a contusion, and what is required for large-scale contusions?

Contusions occur upon blunt violent impact; large-scale contusions require professional medical attention to improve healing prognosis.

What type of wound is shown in this clinical image?

A contusion.

What causes a laceration, and what do its wound edges look like?

Lacerations occur upon over-expansion and straining of tissue elasticity, resulting in irregular, jagged wound edges.

What are the healing tendencies and surgical requirements for larger lacerations?

They often exhibit delayed wound healing with a tendency to scar formation; larger lacerations require a surgical clean cut of the wound edges and closure via sutures.

What type of wound is shown in this clinical photograph?

A laceration.

What causes an abrasion, and what skin layers are primarily affected?

Abrasions occur upon abrading powers and are often harmless but contaminated injuries confined to the upper skin layers.

Why are larger abrasions described as being very painful?

The injury extends to the many fine nerve endings located subjacent to the skin.

What type of wound is shown in this clinical photograph?

An abrasion.

Why do animal or human bites frequently result in serious infections like tetanus or rabies?

Germs enter the wound with the saliva where they find favorable conditions for growth; urgent medical consultation is required.

What type of wound is shown on the patient's hand?

A bite wound.

What defines a surgical cut wound?

A clean incision created during a surgical procedure with subsequent wound closure via sutures.

What are the three overlapping phases that comprise normal wound healing?

1. Inflammatory phase; 2. Proliferation (repair) phase; 3. Remodeling (maturation) phase.

What is the typical timeframe of the inflammatory phase of wound healing?

An initial response occurring from Days $1\text{ to }3$ post injury, typically resolving within $4\text{ to }6\text{ days}$.

What cellular and vascular responses occur during the inflammatory phase?

Platelet aggregation and activation, leukocyte migration, phagocytosis, vasodilation, plasma leakages, increased capillary permeability, and hemostasis.

How do activated macrophages and mast cells initiate vascular changes at the injury site?

They release chemical signals that cause nearby capillaries to widen and become more permeable.

What is the primary role of chemokines released during early wound healing?

They attract more phagocytic cells from the blood to the site of injury.

Which two leukocyte types phagocytose pathogens and cell debris during the inflammatory phase?

Neutrophils and macrophages.

What are the five cardinal signs and symptoms of inflammation?

Heat, redness, swelling, pain, and loss of function.

What clinical concept do the five pillars in this illustration represent?

The cardinal signs of inflammation: Heat, Redness, Swelling, Pain, and Loss of Function.

What is the typical timeframe and primary objective of the repair (proliferative) phase?

It occurs from Days $4\text{ to }24$ post injury with the goal of restoring skin integrity and gaining tensile strength.

Which cellular proliferation process drives collagen synthesis during the repair phase?

Fibroblast proliferation.

What four concurrent processes occur during the proliferative phase?

Wound contraction, angiogenesis, epithelialization, and granulation tissue formation.

What are the visual and physical characteristics of healthy granulation tissue?

It displays a translucent red color, is fragile, and bleeds easily.

What type of healing tissue is shown in the wound bed of this image?

Granulation tissue (translucent red color, fragile, bleeds easily).

What is the timeframe of the maturation (remodeling) phase of wound healing?

From $21\text{ days}$ up to $2\text{ years}$.

How does collagen reorganize during the maturation/remodeling phase?

Collagen originally laid down in a haphazard order undergoes cross-linking and reorganizes into a more orderly structure.

What changes occur in wound tensile strength and vascularity during the remodeling phase?

Tensile strength further increases, while wound vascularity decreases.

What overlapping phases of wound healing are illustrated in this timeline chart?

Inflammation ($4\text{ to }6\text{ days}$), Proliferation ($4\text{ to }24\text{ days}$), and Remodeling ($21\text{ days to }2\text{ years}$).

What two direct physiological impairments lead to deficient wound healing?

Inadequate blood flow to the wound and an inadequate inflammatory response by the host.

Which specific host factors can cause deficient wound healing?

Drugs, age/weight, disease processes, poor nutrition, and tobacco use.

What is the primary management requirement for a dry wound?

It needs hydration.

What is the primary management requirement for a wet or draining wound?

It needs an absorbent dressing.

What is the primary management requirement for a necrotic wound?

It needs to be debrided.

What is the primary management requirement for an infected wound?

It needs treatment with an antimicrobial agent.

Why should cotton wool and gauze be avoided when cleaning granulating wounds?

They disrupt and damage the delicate granulating tissue.

What is the preferred fluid and technique for routine wound cleansing?

Gentle irrigation with normal saline.

How should adherent scabs be safely removed during wound cleansing?

They can be gently removed with wet gauze after a short period of soaking.

What cleansing method is preferred for larger or heavily infected wounds?

It is preferable to shower the wound.

Why is it important to cover up a wound after a fall?

Covering the wound maintains a moist healing environment, protects against bacterial contamination and physical trauma, and prevents dry scab formation that impedes epithelial cell migration.

Why is the use of strong antiseptics like Eusol, acetic acid, and hydrogen peroxide discouraged?

They have toxic effects on the microcirculation of the wound bed.

How does potassium permanganate (PP) solution help oozy, weepy, or eczematous wounds?

It acts as a mild astringent that dries weepy exudate and cleanses the lesion.

Which topical antiseptics are recommended for managing infected wounds?

Povidone-iodine and chlorhexidine.

Why should the routine use of topical antibiotic ointments (e.g., mupirocin, fusidic acid) be avoided?

Routine topical antibiotics risk the development of bacterial resistance and are discouraged in standard wound management.

What non-antibiotic agents with antimicrobial properties are recommended for topical wound management?

Iodine compounds (such as iodine cadexamer) and silver sulphadiazine.

Why is silver incorporated into wound dressings, and what are two examples of silver-containing dressings?

Silver exerts broad-spectrum antimicrobial activity without inducing antibiotic resistance; examples include silver sulphadiazine cream and silver-impregnated dressings.

What brand and class of topical antimicrobial dressing is shown in this packaging?

IODOSORB Cadexomer Iodine Dressing.

What is the clinical definition of wound debridement?

The removal of dead, damaged, or infected tissue to improve the healing potential of the remaining healthy tissue.

Why is debridement essential for chronic or non-healing wounds?

It clears non-viable necrotic burden and bacterial colonies, exposing healthy viable tissue to allow granulation and re-epithelialization.

What are the five recognized clinical methods of wound debridement?

1. Surgical; 2. Mechanical; 3. Enzymatic (proteolytic enzymes); 4. Autolytic; 5. Maggots.

How does enzymatic debridement achieve tissue breakdown?

It utilizes topically applied proteolytic enzymes to digest and break down necrotic slough.

What debridement method is depicted in this clinical photograph?

Maggot debridement therapy (larval therapy).

What are the six core purposes of applying a wound dressing?

Stop bleeding, absorb exudate, ease pain, debride the wound, protect from infection and mechanical damage, and promote healing.

What physiological advantages are provided by moist wound healing compared to a dry environment?

Lower infection rates, improved collagen synthesis, and minimized formation of dry necrotic tissue.

What happens when a wound is left uncovered to dry out?

The dermis dries out and forms a hard scab/crust that impedes epithelial cell migration, forcing cells to travel further and increasing scarring upon scab shedding.

Why do wounds heal faster and without a scab when kept covered and moist?

Epithelial cells migrate effortlessly across the moist dermal surface across the base of the wound.

What comparative healing concept is demonstrated in this diagram?

Moist wound healing under a dressing (effortless epithelial migration) versus dry wound healing uncovered (scab impedes migration).

What are the key exudate-handling and moisture features of an ideal dressing?

It removes excess exudate while maintaining a moist wound environment.

What gas exchange, insulation, and removal characteristics define an ideal dressing?

Permeable to oxygen, thermally insulates the wound, protects against infection, free from particulate/toxic contaminants, and removable without disrupting delicate new tissue.

Which wound-specific factors govern the clinical choice of a wound dressing?

Vascular status, risk or presence of infection, environment and depth of the wound, and volume of wound exudate.

Which patient and socioeconomic factors affect the choice of a wound dressing?

Patient comfort/preference, location of wound, availability, cost-benefit, durability/adaptability, odour control requirement, and patient/caregiver capabilities.

What general clinical strategies promote wound healing during dressing management?

Keep wound covered and clean, maintain moist wound bed while keeping surrounding skin dry, debride when necessary, remove exudate, pack wounds loosely, and institute nutritional interventions.

What are low-adherent dressings, and for which wounds are they indicated?

Dressings featuring an absorbent pad lined by a low-adherent polyester film, indicated for lightly exudating wounds such as superficial burns and small wounds.

What are the two primary clinical benefits of low-adherent dressings?

They allow for rapid drainage of exudate and reduce trauma to the wound during removal.

What are the three distinct layers comprising a Melolin dressing?

1. Low adherent perforated film; 2. Highly absorbent cotton/polyester pad; 3. Hydrophobic backing layer.

What brand and dressing class is shown on this sterile product package?

Melolin (a low-adherent dressing).

What is Primapore, and what are its primary clinical indications?

A non-woven adhesive dressing containing an absorbent pad with a soft conformable fixative layer, indicated for lightly exudating wounds, minor cuts, abrasions, lacerations, or as a secondary dressing over gels.

What are the physical characteristics and clinical drawbacks of woven gauze?

It features a loose open weave made from cotton fibers, with a tendency to generate loose fibers when cut and adhere to the wound bed.

What are the physical characteristics and benefits of non-woven gauze swabs?

Synthetic fibers condensed tightly together, producing fewer loose fibers, offering a softer feel, and preventing adherence to the wound bed.

Why is non-woven gauze preferred over woven cotton gauze for direct wound contact?

Non-woven gauze does not stick to the wound and generates significantly fewer loose fibers.

What defines a gauze-impregnated dressing?

Gauze impregnated with white soft paraffin, antiseptics, or antimicrobial agents (e.g., Jelonet, Bactigras).

What is the primary clinical danger of leaving gauze-impregnated dressings on a wound too long?

The dressing dries up easily, causing gauze threads to become enmeshed with the developing granulation tissue.

What is Jelonet, what is its composition, and what does it require?

A soft paraffin base dressing made from open weave gauze with interlocking threads to minimize fraying; it requires a secondary dressing.

What active antimicrobial agent does Bactigras contain, and at what concentration?

Chlorhexidine acetate at a concentration of $0.5\%$.

Which wound types are commonly managed with Jelonet and Bactigras dressings?

Burns, skin grafts, skin loss wounds, and ulcers.

What defines a semi-permeable film dressing?

A transparent, thin, vapour-permeable film dressing that is waterproof and allows continuous monitoring of wound progress.

What are the primary clinical advantages of semi-permeable film dressings?

Waterproof protection, visibility of wound healing without dressing removal, and high water vapour permeability that reduces changing frequency.

What are the potential disadvantages of semi-permeable film dressings?

They may trap fluid and sweat causing maceration and infection risk, have poor absorbency, and can cause tissue trauma if removed improperly.

What is the correct clinical technique to remove a semi-permeable film dressing?

Gently stretch the film parallel to the skin surface to break the adhesive bond.

What are the clinical uses of semi-permeable film dressings?

Minor burns, scalds, minimally exuding shallow wounds, catheter fixation, and skin protection from friction and external contamination.

What brand and class of transparent dressing is shown on this package?

Tegaderm (a semi-permeable film dressing).

What is Opsite Spray Dressing, and how can it be removed?

A spray-on film that can be peeled off when completely dry, left to slough off unaided, or removed using an adhesive plaster remover.

What are the absorbency characteristics and exudate indications of foam dressings?

They are highly absorbent hydrophilic polyurethane dressings suitable for low to highly exuding wounds such as chronic leg ulcers and pressure sores.

What are the clinical advantages of foam dressings?

Waterproof, non-adherent, conformable to uneven body surfaces, protective, provide thermal insulation, and maintain a moist healing environment.

What are the clinical limitations and contraindications of foam dressings?

Some require a secondary dressing, and they are not recommended for dry eschars.

What brand and class of wound dressing is shown on this box?

Allevyn (a hydrophilic polyurethane foam dressing).

What raw material are alginate dressings derived from, and what fibers do they contain?

They are non-woven sodium and calcium fibers derived from seaweed.

How do alginate dressings behave when they contact wound exudate?

They absorb wound exudate and transform into a hydrophilic gel-like covering over the wound.

What are the advantages and clinical applications of alginate dressings like Kaltostat?

Highly absorbent, autolytic, promote hemostasis, conform to the wound bed, and can pack deep cavities to reduce dead space in moderately to highly exuding wounds.

What are the contraindications and disadvantages of alginate dressings?

They require a secondary dressing, are not recommended for dry eschars, and should not be used on lowly exuding wounds.