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Which type of debridement occurs when nonliving tissue slough away from uninjured tissues?
- A. Mechanical
- B. Natural
- C. Enzymatic
- D. Surgical
Correct Answer: B
Rationale: Natural debridement is accomplished when nonliving tissue slough away from uninjured tissue. Mechanical debridement involves the use of surgical tools to separate and remove the eschar. Enzymatic debridement encompasses the use of topical enzymes to the burn wound. Surgical debridement uses the use of forceps and scissors during dressing changes or wound cleaning.
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A client is brought to the emergency department after sustaining a serious burn. The nurse understands that the focused management of which burn zone is of greatest concern?
- A. Zone in burn center
- B. Zone of coagulation
- C. Zone of hyperemia
- D. Zone of stasis
Correct Answer: D
Rationale: The zone of stasis lies outside the burn center and zone of coagulation. This is where the blood vessels are damaged, but tissue has the potential to survive with proper management. The center zone or zone of coagulation is the deepest area of injury and is considered the zone of irreversible damage, placing the focus on saving the surrounding tissues. The zone of hyperemia is the area of least injury.
An emergency department nurse is evaluating a client with partial-thickness burns to the entire surfaces of both legs. Based on the rule of nines, what is the percentage of the body burned?
- A. 9%
- B. 18%
- C. 27%
- D. 36%
Correct Answer: D
Rationale: According to the rule of nines, the anterior portion of the lower extremity is 9% and the posterior portion of the lower extremity is 9%. Each lower extremity is therefore equal to 18%. Both lower extremities that have sustained burns to entire surfaces will equal to 36% of total surface area. None of the other answer choices correctly applies the Rule of nines.
Which is a disadvantage of surgical debridement?
- A. Scarring
- B. Bleeding
- C. Loss of function
- D. Contractures
Correct Answer: B
Rationale: A disadvantage of surgical debridement is bleeding. Scarring, loss of function, and contractures are not disadvantages of surgical debridement.
Which of the following would indicate the need to increase fluids beyond what is recommended for fluid resuscitation?
- A. Myoglobin in the urine
- B. Increase in antidiuretic hormone (ADH)
- C. Elevation of blood glucose levels
- D. Hypermatremia
Correct Answer: A
Rationale: Myoglobin from muscle tissue destruction is transported to the kidneys for excretion and can cause tubular necrosis and acute renal failure. Increase in fluid intake until urine output clears is recommended in serious burns. An increase in ADH release is expected as the body tries to prevent hypovolemic shock. Elevation in glucose levels occurs when the adrenal cortex is stimulated. Sodium levels rise in response to aldosterone levels, which directly leads to peripheral edema.
A nurse is monitoring the effectiveness of fluid resuscitation in a client who is being treated for burns. What assessment would indicate the success of the fluid resuscitation?
- A. The client's heart rate is rapid and regular.
- B. The client's urinary output is 0.5 to 1 ml/kg/hour.
- C. The client's breathing is unlabored, and skin is clammy.
- D. The client is alert and conscious.
Correct Answer: B
Rationale: Successful fluid resuscitation is gauged by a urinary output of 0.5 to 1 ml/kg/hour via an indwelling catheter. Fluid resuscitation does not directly affect the client's heart rate, breathing, or mental status.