Burns: Thermal Injuries Lecture + Burns Quiz Flashcards
How Common?
Males>Females until >70yo
*Why??→ Geriatric smoking on O2
What are Burns?
5 Categories/Types to discuss:
- Thermal
- Electrical (Entrance/Exit wound)
- Chemical
- Radiation (think Cx)
- Other
Classification: Burn Depth
Breaking the components down
-
1st Deg:
- Superficial Thickness
-
2nd Deg:
- Superficial Partial Thickness
- Deep Partial Thickness
-
3rd Deg:
- Full Thickness
-
4th Deg:
- Subdermal
Classification: Burn Depth
Breaking it down by Epidermis, Dermis, SubQ Tissues
- Epidermis: SUPERFICIAL BURN: 1st Degree
-
Dermis: PARTIAL-THICKNESS BURN: 2nd Degree
- Superficial partial thick
- Deep partial thick
- SubQ Tissues: FULL-THICKNESS BURN: 3rd or 4th Degree
Name the 5 Depths of Burns
- Superficial Thickness→ 1st Degree
- Sunburn
- Superficial Partial Thickness→ 2nd Degree
- Partially thru dermis
- Deep Partial Thickness→ 2nd Degree
- All way thru dermis
-
Full (think Fat) Thickness→ 3rd Degree
- SubQ fat to bone
- Subdermal→ 4th Degree
- Bones, ligs, mm’s, tendons
Burn Descriptions + Pics
Superficial Thickness Burn= 1st Degree Burn
“Classic sunburn”
- Red
- Dry
- Painful→ always bc epidermis
*Usually heals w/in 3-4d w/out scar
Burn Descriptions + Pics
Superficial Partial-Thickness Burn= 2nd Degree Burn
- Pink-red
-
Painful
- bc dermis still intact
- Blisters*, Moist, Blanching, Edema
*Heals 7-10d w/ min. scarring and min. wound contraction
Any time you see PARTIAL-THICKNESS you know its __________
2nd Degree Burn*****
Then just distinguish bw Superf OR Deep!!!!!!!
Burn Descriptions + Pics
Deep Partial Thickness Burn= 2nd Degree Burn
- Pale*
- Painful→ pot. pain or NO pain, depends on depth*
- LESS moist
- Cap refill absent or prolonged
- Edema
- Diminished Sensation
- Deep pressure intact, Pinprick may not be
*May heal 21-35d→ Most likely req grafting, Hypertrophic or keloid scarring w/ pot. sig wound contraction
Burn Descriptions + Pics
Full Thickness Burn= 3rd Degree Burn
*thru epi and dermis
“The black, charred, leathery, waxy eschar one”
- Black charred, or mottled red/brown, or pale, or waxy white eschar formation
- Leathery appearance
- May be insensate
- NO cap refill
- Edema
- NO pain bc vascularization burned
*May heal 4-6wks; grafting req’d, sig hypertrophic scarring and wound contraction
Burn Descriptions + Pics
Subdermal Burn= 4th Degree Burn
MM or bone exposed one
- Complete destruction: epidermis, dermis, and SubQ tissue
- DRY
- Charred appear., mm or bone may be exposed
*Always req’s grafting; poss. mm flap for coverage; definite hypertrophic scarring
Classification: Burn Size
Total Burn Surface Area (TBSA)
3 Methods
- Rule of Nines→ NPTE*****
- Lund & Browder Chart
- Palm Method
Classification: Burn Size
Rule of Nines***
KNOW IT!!!!
100-age-%surf area burned==> chance survival
See pics
- Adult Values
- Head/Neck= 9%
- Anterior trunk= 18%*
- Posterior trunk= 18%
- Anterior arm, forearm, hand= 9%
- Genitals= 1%
- Anterior leg, foot= 18%
- Posterior leg, foot= 18%
-
Child <1yo
- Has 9% taken from LE and added to the head/neck region.
- 1% is distributed back to the LEs for ea yr of life until 9yo→ when head considered same size as adult*
- Has 9% taken from LE and added to the head/neck region.
Classification: Burn Size
MOST ACCURATE MEASURE?
Lund and Browder Burn Chart
Classification: Burn Size
Palm Method (exactly what it sounds like)
- The palm of the adult hand (just palm) is Equal to→ .5% TBSA (Total Burn Surface Area)
- 2 palms= 1%
3 Classifications of Burns:
- Burn Depth→ Thickness
- Burn Size→ How much surface area
- MOI→ How it happened
Classification: Mech of Injury (MOI)
5 Classes
- Thermal
- Electrical (Enter/Exit wound)
- Chemical
- Radiation (think Cx)
- Other
Classification: Mech of Injury (MOI)
Thermal Injury
- Flames, hot liquids (scalded), steam, semi-solids, contact w/ hot obj
Classification: Mech of Injury (MOI)
Electrical Injury
- Pure→ Entrance AND Exit sites
- Arc→ Electricity flows external to body
- From→ faulty electrical wiring, high-voltage power lines, lightening
-
**Effects ALL body tissues in its path
- Nerves→ blood vessels→ Mm→ Skin→ Tendon→ Fat→ Bone
Effects ALL body tissue in its path****
Nerves→ blood vessels→ mm→ skin→ tendon→ fat→ bone
Electrical Injuries***
Entrance/Exit wounds
Electrical Injuries****
Classification: MOI
Chemical Burn
-
Strong Acid
- Industrial cleaners, household rust removers
-
Alkali (base)
- Lime, lye, household cleaners, hydroxides
Classification: Mech of Injury (MOI)
Radiation Burn
- Sunburn**
- Medical (oncology radiation, excess X-ray exposure, etc.)
- Nuclear power plant explosions; Atomic bombs
Classification: Mech of Injury (MOI)
Other “Burns”
- Road Rash
- Need to be cleaned well, debris/foreign bodies removed*
- Frost Bite
- Occurs when tissue temp is 35.6*F (2*C)
- NOTE: W/ frostbite→ body shunts blood to proximal trunk to keep warm, therefore no bloodflow to distal extremities (hence, black frostbitten toes)
- Occurs when tissue temp is 35.6*F (2*C)