BURNS & PERFUSION Exam 3 Questions and
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What are the common consequences of burn injuries?
Burn injuries are painful, costly, disfiguring, require intensive rehabilitation,
and can lead to long-term disability.
How many people are treated for burns annually in the U.S.?
Approximately 486,000 people are treated for burns each year.
What type of burns constitutes the largest proportion of burn
injuries?
Thermal burns make up the largest proportion of burn injuries.
What are the strongest predictors for mortality in burn injuries?
Increased percent of TBSA burned, presence of inhalation injury, and
increased age.
What factors determine the severity of a burn injury?
Age of the patient, depth of the burn, TBSA burned, presence of inhalation
injury, other injuries, location of the injury, and comorbid conditions.
What are the characteristics of first-degree burns?
First-degree burns are superficial, painful, erythematous, and the epidermis
remains intact with a negative Nikolsky's sign.
What defines second-degree burns?
Second-degree burns involve the entire epidermis and parts of the dermis,
are painful, associated with blisters, and have a healing time of 2 to 3
weeks.
What is the appearance and sensation of third-degree burns?
Third-degree burns show total destruction of the epidermis and dermis,
may appear pale white to charred, and lack sensation due to nerve
damage.
What are fourth-degree burns?
Fourth-degree burns extend into deep tissue, muscle, or bone.
What methods are used to estimate TBSA affected by burns?
The rule of nines, Lund and Browder method, and palmer method.
,What is the rule of nines?
A method for estimating TBSA in adults where each anatomic region
represents approximately 9% of the total body surface area.
How does the Lund and Browder method differ from the rule of nines?
The Lund and Browder method provides a more precise estimate of TBSA
by accounting for the age of the patient and dividing the body into smaller
areas.
What is the palmer method used for?
The palmer method estimates TBSA by using the size of the patient's hand,
which is approximately 1% of their TBSA.
Why are burns to the face, neck, and chest particularly concerning?
They can lead to respiratory obstruction due to mechanical obstruction from
edema or devitalized tissue formation.
What are the risks associated with burns to the hands, feet, and
joints?
These burns can severely impact self-care and future function due to their
location.
Why are burns to the ears and nose at high risk for infection?
They have poor blood supply to the cartilage, making them susceptible to
infection.
What complications can arise from circumferential burns of the
extremities?
They can cause circulatory compromise.
What is the pathophysiology of burn injuries?
Burn injuries result from chemical injury or heat transfer causing tissue
destruction through coagulation, protein denaturation, or ionization.
What are the three zones of a burn wound?
Zone of coagulation (necrosis), zone of stasis (potential necrosis), and
zone of hyperemia (minimal injury).
What temperature can cause a burn injury in adults within 30
seconds?
Exposure to temperatures of 54°C (130°F) can cause a burn injury in 30
seconds.
At what temperature does tissue destruction occur in just 5 seconds?
At 60°C (140°F), tissue destruction occurs in 5 seconds.
, What is considered a severe burn injury in terms of TBSA?
Injuries affecting more than approximately 20% TBSA are considered
severe.
What systemic response occurs following a severe burn injury?
The release of proinflammatory and anti-inflammatory cytokines, leading to
hypermetabolism, organ dysfunction, and potential mortality.
What is the immediate cardiovascular alteration after a burn injury?
An immediate decrease in cardiac output precedes plasma volume loss.
What causes increased capillary permeability after a burn injury?
The release of free oxygen radicals due to systemic inflammation.
What is early burn shock?
A type of hypovolemic shock resulting from intravascular volume loss after
a burn injury.
When does the greatest volume of intravascular fluid leak occur after
a burn?
In the first 24 to 36 hours post-injury, peaking at approximately 6 to 8
hours.
What is the consequence of inadequate fluid resuscitation in burn
patients?
Distributive shock occurs due to insufficient vascular volume.
How does edema formation differ between superficial and deeper
burns?
Superficial burns cause edema within 4 hours, while deeper burns can
continue to form edema for up to 18 hours.
What are potential treatments for edema in burn patients?
Elevation of the extremity, escharotomy, or fasciotomy.
What fluid and electrolyte alterations occur immediately after a burn
injury?
Hyperkalemia from cell destruction and potential hypokalemia later due to
fluid shifts.
What happens to serum sodium levels after a burn injury?
They vary in response to fluid resuscitation, with hyponatremia possible
due to plasma loss.
What is the significance of inhalation injuries in burn victims?
Verified Answers Detailed Answers Latest
Graded A+
What are the common consequences of burn injuries?
Burn injuries are painful, costly, disfiguring, require intensive rehabilitation,
and can lead to long-term disability.
How many people are treated for burns annually in the U.S.?
Approximately 486,000 people are treated for burns each year.
What type of burns constitutes the largest proportion of burn
injuries?
Thermal burns make up the largest proportion of burn injuries.
What are the strongest predictors for mortality in burn injuries?
Increased percent of TBSA burned, presence of inhalation injury, and
increased age.
What factors determine the severity of a burn injury?
Age of the patient, depth of the burn, TBSA burned, presence of inhalation
injury, other injuries, location of the injury, and comorbid conditions.
What are the characteristics of first-degree burns?
First-degree burns are superficial, painful, erythematous, and the epidermis
remains intact with a negative Nikolsky's sign.
What defines second-degree burns?
Second-degree burns involve the entire epidermis and parts of the dermis,
are painful, associated with blisters, and have a healing time of 2 to 3
weeks.
What is the appearance and sensation of third-degree burns?
Third-degree burns show total destruction of the epidermis and dermis,
may appear pale white to charred, and lack sensation due to nerve
damage.
What are fourth-degree burns?
Fourth-degree burns extend into deep tissue, muscle, or bone.
What methods are used to estimate TBSA affected by burns?
The rule of nines, Lund and Browder method, and palmer method.
,What is the rule of nines?
A method for estimating TBSA in adults where each anatomic region
represents approximately 9% of the total body surface area.
How does the Lund and Browder method differ from the rule of nines?
The Lund and Browder method provides a more precise estimate of TBSA
by accounting for the age of the patient and dividing the body into smaller
areas.
What is the palmer method used for?
The palmer method estimates TBSA by using the size of the patient's hand,
which is approximately 1% of their TBSA.
Why are burns to the face, neck, and chest particularly concerning?
They can lead to respiratory obstruction due to mechanical obstruction from
edema or devitalized tissue formation.
What are the risks associated with burns to the hands, feet, and
joints?
These burns can severely impact self-care and future function due to their
location.
Why are burns to the ears and nose at high risk for infection?
They have poor blood supply to the cartilage, making them susceptible to
infection.
What complications can arise from circumferential burns of the
extremities?
They can cause circulatory compromise.
What is the pathophysiology of burn injuries?
Burn injuries result from chemical injury or heat transfer causing tissue
destruction through coagulation, protein denaturation, or ionization.
What are the three zones of a burn wound?
Zone of coagulation (necrosis), zone of stasis (potential necrosis), and
zone of hyperemia (minimal injury).
What temperature can cause a burn injury in adults within 30
seconds?
Exposure to temperatures of 54°C (130°F) can cause a burn injury in 30
seconds.
At what temperature does tissue destruction occur in just 5 seconds?
At 60°C (140°F), tissue destruction occurs in 5 seconds.
, What is considered a severe burn injury in terms of TBSA?
Injuries affecting more than approximately 20% TBSA are considered
severe.
What systemic response occurs following a severe burn injury?
The release of proinflammatory and anti-inflammatory cytokines, leading to
hypermetabolism, organ dysfunction, and potential mortality.
What is the immediate cardiovascular alteration after a burn injury?
An immediate decrease in cardiac output precedes plasma volume loss.
What causes increased capillary permeability after a burn injury?
The release of free oxygen radicals due to systemic inflammation.
What is early burn shock?
A type of hypovolemic shock resulting from intravascular volume loss after
a burn injury.
When does the greatest volume of intravascular fluid leak occur after
a burn?
In the first 24 to 36 hours post-injury, peaking at approximately 6 to 8
hours.
What is the consequence of inadequate fluid resuscitation in burn
patients?
Distributive shock occurs due to insufficient vascular volume.
How does edema formation differ between superficial and deeper
burns?
Superficial burns cause edema within 4 hours, while deeper burns can
continue to form edema for up to 18 hours.
What are potential treatments for edema in burn patients?
Elevation of the extremity, escharotomy, or fasciotomy.
What fluid and electrolyte alterations occur immediately after a burn
injury?
Hyperkalemia from cell destruction and potential hypokalemia later due to
fluid shifts.
What happens to serum sodium levels after a burn injury?
They vary in response to fluid resuscitation, with hyponatremia possible
due to plasma loss.
What is the significance of inhalation injuries in burn victims?
