Burns Flashcards
First-degree burn is ?
the most superficial. The damage is confined to the skin area known as the epidermis..
second-degree burn is
also called a partial thickness burn. It burns the epidermis and a part of the dermis, leading to a painful area that blisters
Third-degree burns or “full-thickness burns”
wreck the epidermis, the whole dermis, and sometimes the deeper layers of tissue. They do not hurt because of the loss of the nerve endings in the burned tissue.
Fourth degree-
profound damage of all layers of soft tissue , including muscles , blood vessels and bone.
What’s first degree complications after healing ?
hypopigmentation after healing .
What’s second degree complications ?
Atrophied scarring
Third and forth degree complications ?
Deformative and keloid scarring
Which more severe acid or alkaline burns ?
Alkaline , because of chemical compounds penetrating soft tissue much more easily than acids therefore damaging tissue significantly more.
What’s the acid burns complications and how it penetrate to soft tissues ?
create crust around affected area, thus creating barrier for acid itself to penetrate tissue even further .
Clinical picture of first degree burns ?
dryness, redness, soft tissue swelling and edema
Clinical picture of second degree ?
blisters , filled with plasma and hemorrhagic substance
Clinical picture of third and fourth degree ?
create black burned crusts , necrotic outer layer epidermis, which will go off after 2-3 weeks.
In oral cavity third degree burns how it manifest ?
greyish , yellowish or translucent crusts covering mucosa or exposing muscles and bones
Which structures burns can cause contracture and severe facial deformation?
Lip, alveolar process and vermillion
Why in third degree paresthesia or anesthesia Therefore pain is generally not a significant problem. Hemorrhage is usually not prsent occur ?
Cause burns reach the subcutaneous tissue and the nerve damaged and blood vessels cauterized .
Bleeding may occur during 3 week of healing
proliferation and scar formation can create lip adhering to alveolar process and microstomia , commissure deformation and deformation of oral cavity in general
During which phase of healing ?
During secondary intention healing process after The necrotic tissue, known as eschar, becomes charred or crusty in appearance and begins to separate from the surrounding viable tissue.
During this period of time intraoral appliances should be considered
What’s the wound cleaning agent in chemical burns ?
antidote or antagonist of primary cause of burn
Acid burn should be cleaned and washed with weak ,water diluted alkaline solution
alkaline burns should be cleaned with weak acid solutions like water diluted vinegar and lemon juice
first degree burns should be treated with what ?
with apical creams and gels, like creams containing pantothenic acid (bepanten, panthenol) and cold dressings
second degree burns should be treated with ?
thoroughly cleaned and dressed with antiseptic gauzes
during third and fourth degree burns treatment ?
surgical debridement , necrotomy and skin grafting can be considered in addition
Frostbites
thermal injuries gotten from low temperature and freezing of the skin.
Blood viscosity changes under low temperatures, becomes thick, thus sustained low temperatures even below zero degree can cause soft tissue damage
What’s frostnip ?
Mild form of frostbite : Continued cold exposure leads to numbness in the affected area. As your skin warms, you may feel pain and tingling. Frostnip doesn’t cause permanent skin damage.
What’s Superficial frostbite ?
causes slight changes in skin color. The skin may begin to feel warm — a sign of serious skin involvement.
If you treat frostbite with rewarming at this stage, the surface of the skin may appear mottled.
And you may notice stinging, burning and swelling. A fluid-filled blister may appear 12 to 36 hours after rewarming the skin.
Deep (severe) frostbite ?
As frostbite progresses, it affects all layers of the skin as well as the tissues that lie below.
The skin turns white or blue-gray and you lose all sensation of cold, pain or discomfort in the area. Joints or muscles may stop working.