Nursing Elites

1. Which of the following arterial blood gas values indicates a patient may be experiencing a condition of metabolic acidosis?

• A. PaO2 90 mm Hg
• B. Bicarbonate 15 mEq/L
• C. CO2 47 mm Hg
• D. pH 7.34

Correct answer: B

Rationale: The correct answer is B: Bicarbonate 15 mEq/L. In metabolic acidosis, the bicarbonate levels are lower than normal. A bicarbonate value of 15 mEq/L indicates a deficit in the buffer system, contributing to the acidosis. Choices A, C, and D are incorrect. Choice A, PaO2 90 mm Hg, reflects oxygen partial pressure and is not directly related to metabolic acidosis. Choice C, CO2 47 mm Hg, represents carbon dioxide levels and is more indicative of respiratory status. Choice D, pH 7.34, falls within the normal range (7.35-7.45) and does not confirm metabolic acidosis.

2. A nurse working in a surgical unit notices a patient experiencing SOB, calf pain, and warmth over the posterior calf. All of these symptoms may indicate which of the following medical conditions?

• A. Patient may have a DVT.
• B. Patient may be exhibiting signs of dermatitis.
• C. Patient may be in the late stages of CHF.
• D. Patient may be experiencing anxiety after surgery.

Correct answer: A

Rationale: The correct answer is that the patient may have a DVT (Deep Vein Thrombosis). SOB (Shortness of Breath), calf pain, and warmth over the posterior calf are classic signs and symptoms of DVT. DVT is a serious condition where a blood clot forms in a deep vein, commonly in the legs. Choices B, C, and D are incorrect because dermatitis does not typically present with these symptoms, late stages of CHF would manifest with other signs, and anxiety after surgery usually does not produce these specific symptoms.

3. When dressing a severe burn to the right hand, it is important for the nurse to:

• A. Apply a wet-to-dry dressing for debridement
• B. Wrap each digit individually to prevent webbing
• C. Open blisters to allow drainage prior to dressing
• D. Allow the client to do as much of the dressing change as possible

Correct answer: B

Rationale: When dressing a severe burn to the hand, it is crucial to wrap each digit individually to prevent webbing, which can lead to contractures and impaired function. Applying a wet-to-dry dressing for debridement is not recommended for burn wounds as it can cause trauma to the wound bed during removal. Opening blisters can increase the risk of infection and delay healing. Allowing the client to perform the dressing change may not ensure proper care and can lead to complications.

4. In a client with asthma who develops respiratory acidosis, what should the nurse expect the client's serum potassium level to be?

• A. normal
• B. elevated
• C. low
• D. unrelated to the pH

Correct answer: B

Rationale: In respiratory acidosis, the serum potassium level is expected to be elevated. This occurs because potassium shifts from cells into the bloodstream as a compensatory mechanism to maintain acid-base balance. Choices A, C, and D are incorrect. A normal potassium level is not expected in respiratory acidosis. A low potassium level is more commonly associated with alkalosis, not acidosis. The potassium level is indeed related to pH changes in respiratory acidosis, leading to the expected elevation.

5. The client in the Emergency Department, who has suffered an ankle sprain, should be taught to:

• A. use cold applications to the sprain during the first 24-48 hours.
• B. expect disability to decrease within the first 24 hours of injury
• C. expect pain to decrease within 3 hours after injury.
• D. begin progressive passive and active range of motion exercises immediately.

Correct answer: A

Rationale: When a client suffers an ankle sprain, the nurse should teach them to use cold applications to the sprain during the first 24-48 hours. Cold applications are believed to produce vasoconstriction and reduce the development of edema. Expecting disability to decrease within the first 24 hours of injury (choice B) is incorrect as disability and pain are anticipated to increase during the first 2-3 hours after injury. Expecting pain to decrease within 3 hours after injury (choice C) is also incorrect as pain and swelling usually increase initially. Beginning progressive passive and active range of motion exercises immediately (choice D) is not recommended; these exercises are usually started 2-5 days after the injury, according to the physician's recommendation. Treatment for a sprain involves support, rest, and alternating cold and heat applications. X-ray pictures are often necessary to rule out any fractures.

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