Skin lecture

Factors Affecting Skin Integrity

• Age

  • Older adults experience decreased skin elasticity, leading to drier skin.

  • Reduced collagen production and hyperpigmentation increase vulnerability to injuries.

• Mobility

  • Impaired mobility increases risk of pressure sores due to prolonged pressure on tissues.

  • Individuals with decreased sensation may not shift positions to relieve pressure, raising the risk for skin injury.

• Nutrition

  • Protein is essential for skin maintenance and healing.

  • Vitamins (C, Zinc, Copper) are crucial for collagen formation; deficiencies can hinder healing.

  • Dehydration results in poor skin turgor and heightened injury risk.

• Pressure and Surface Firmness

  • Softer surfaces like sofas may reduce the risk of pressure sores compared to hard surfaces like wooden chairs.

  • Special beds that rotate pressure can mitigate the risk for immobile patients.

• Sensation Level

  • Diminished sensation, common in conditions like diabetic neuropathy, can lead to unnoticed injuries.

• Circulation

  • Impaired circulation hampers wound healing, leading to chronic wounds that are slow to heal.

  • Medications (e.g., blood pressure meds, NSAIDs) may reduce blood flow and contribute to ischemia.

• Infection

  • All chronic wounds are considered contaminated due to the presence of microorganisms.

  • Critical colonization occurs when bacteria in a wound overwhelm the body’s defenses.

  • Indicators of infection include increased drainage, foul odor, changes in the wound bed, and new tunneling.

• Moisture and Skin Integrity

  • Excess moisture can cause maceration, softening the outer skin layer and increasing the risk for breakdown.

  • Fever increases metabolic demands and depletes skin moisture.

• Lifestyle Factors

  • Lifestyle choices, such as tanning and skin cleansing habits, influence skin health.

Types of Wounds

• Closed Wounds: No break in the skin.

  • Examples: Contusions, bruises, tissue swelling from fractures.

• Open Wounds: Breaks in the skin or mucous membranes.

  • Types include:

    • Abrasions: Scrapes of superficial layers.

    • Lacerations: Jagged tears in the skin.

    • Incisions: Intentional cuts (surgical).

    • Puncture: Piercing injuries.

    • Contusions: Bruises without breaks in the skin.

    • Crushing Wounds: Compression injuries without skin breaks.

Wound Healing

• Acute Wounds: Healed spontaneously in healthy individuals; includes three phases of healing.

• Chronic Wounds: Healing exceeds expected recovery duration due to infection, trauma, or underlying issues. Such wounds may persist for months or years without proper care.

Important Concepts

• Contamination vs. Infection

  • Contamination is the presence of microorganisms without harm; infection occurs when microorganisms invade and harm tissues, releasing toxins and increasing metabolic demand.

• Recognizing Risks: Lacking sensation (e.g., neuropathy) intensifies risks for skin integrity issues.

• Importance of Proper Care: Chronic wounds necessitate targeted treatment of underlying diseases and care to prevent potential progression to infection or deeper tissue injury.