Summary NUR 445 BURNS CRITICAL CARE EXAM 4 | UPDATED STUDY | GUARANTEED PASS

NUR 445 BURNS CRITICAL CARE EXAM 4 |
2025-2026 UPDATED STUDY | GUARANTEED
PASS

, lOMoAR cPSD| 61371432




Burns

• Anatomy and Functions of the Skin o Integumentary system
 Largest organ
 Epidermis
• Outer protective barrier
• Five layers
 Dermis
• Sebaceous and sweat glands
• Blood vessels, nerves, etc
• Two layers
 Hypodermis
 Layer of insulation 
Pathophysiology and Etiology of Burn Injury o
Zones of Injury
 Depends on extreme/extent of injury
 Zone of coagulation
• Most of where obstruction will happen
• Most damaged skin death area
 Zone of stasis
 Depending on how quickly treatment is given depends on healing
 Zone of hyperemia
• Usually healed well
• Vasodilation; increases healing process
• Classification of Burn Injury o Size of injury
 Rule of nines
• KNOW THIS
• Estimates extent of burn in adult pts
• Ex: front of torso + entire R arm = 27%
 Rule of palms
• From tip of finger to wrist is 1%
 Lund and Browder
• Most accurate; what is used in the hospital setting
o **identify pts age, weight; identifies prognosis of pt




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, lOMoAR cPSD| 61371432




o Depth of Injury
 Superficial
• 1st degree burns
• Erythema, mild pain, mild discomfort and itching
• Ex: sunburns
• Minor burns that do not penetrate skin
 Partial-thickness
• 2nd degree burn
• A little deeper
• Can be severe sunburns that cause blistering
• Exposure burns to heat, friction
• These get past epidermal layer, BUT still superficial
• Healing in 7-21 days
• Causes increased permeability causing leakage of fluid (blisters)
• **LOSE a lot of fluid with these burns
 Deep partial-thickness burns
• Severe impairment of blood supply
• Painful
• Dry and white waxy layer
• Complete epidermal damage and now reached the dermis
• No fluid and drainage bc of poor blood supply




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