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1. The nurse is caring for a client with chronic renal failure who is on a low-potassium diet. Which of the following foods should the client avoid?
- A. Bananas
- B. Potatoes
- C. Rice
- D. Apples
Correct answer: A
Rationale: Bananas are high in potassium content, which can lead to hyperkalemia in clients with chronic renal failure who are on a low-potassium diet. Therefore, it is crucial for these clients to avoid bananas. Potatoes, rice, and apples are lower in potassium compared to bananas and are generally considered safe for consumption in clients with chronic renal failure on a low-potassium diet.
2. A client who has heart failure is admitted with a serum potassium level of 2.9 mEq/L. Which action is most important for the nurse to implement?
- A. Administer 20 mEq of potassium chloride.
- B. Initiate continuous cardiac monitoring.
- C. Arrange a consultation with the dietitian.
- D. Educate about the side effects of diuretics.
Correct answer: B
Rationale: Hypokalemia, defined as a serum potassium level below the normal range of 3.5 to 5 mEq/L, can lead to changes in myocardial irritability and ECG waveform, potentially causing life-threatening dysrhythmias. Therefore, the priority action for the nurse is to initiate continuous cardiac monitoring to promptly detect any abnormal heart rhythms or ventricular ectopy. This monitoring is crucial for assessing the impact of potassium replacement therapy on the cardiac rhythm and ensuring the safety of the client. While administering potassium chloride is important for correcting the hypokalemia, it should occur after cardiac monitoring is in place. Consulting with a dietitian and educating about diuretic side effects are relevant aspects of care but are not the immediate priority in this situation where cardiac monitoring takes precedence for timely intervention.
3. Laboratory findings indicate that a client's serum potassium level is 2.5 mEq/L. What action should the nurse take?
- A. Inform the healthcare provider of the need for potassium replacement.
- B. Prepare to administer a glucose-insulin-potassium replacement.
- C. Change the plan of care to include hourly urinary output measurement.
- D. Instruct the client to increase daily intake of potassium-rich foods.
Correct answer: A
Rationale: A serum potassium level of 2.5 mEq/L is critically low, indicating severe hypokalemia. The immediate action the nurse should take is to inform the healthcare provider of the need for potassium replacement. Option B, preparing to administer glucose-insulin-potassium replacement, is not the first-line intervention; it may be considered in specific situations but requires a healthcare provider's prescription. Option C, changing the plan of care to include hourly urinary output measurement, is not the priority when managing critically low potassium levels. Option D, instructing the client to increase daily intake of potassium-rich foods, is not appropriate in this acute situation where immediate intervention is needed to address the dangerously low potassium level.
4. In a client with heart failure presenting bilateral +4 edema of the right ankle extending up to midcalf while sitting with legs dependent, what is the priority goal?
- A. Decrease venous congestion.
- B. Maintain normal respirations.
- C. Maintain body temperature.
- D. Prevent injury to lower extremities.
Correct answer: A
Rationale: The priority goal in this scenario is to decrease venous congestion. By elevating the legs above the heart level, venous return is improved, reducing congestion in the lower extremities. This intervention helps decrease swelling and prevents complications such as impaired tissue perfusion. Maintaining normal respirations and body temperature are important aspects of care but are secondary to addressing the immediate issue of venous congestion. Preventing injury to lower extremities is also essential but takes precedence after managing the venous congestion to prevent further complications.
5. A client is receiving a continuous infusion of normal saline at 125 ml/hour post abdominal surgery. The client is drowsy and complaining of constant abdominal pain and a headache. Urine output is 800 ml over the past 24 hours with a central venous pressure of 15 mmHg. The nurse notes respiratory crackles and bounding central pulse. Vital signs: temperature 101.2 F (38.4 C), heart rate 96 beats/minute, respiration 24 breaths/minute, and blood pressure of 160/90 mmHg. Which intervention should the nurse implement first?
- A. Calculate total intake and output for the last 24 hours.
- B. Administer a PRN dose of acetaminophen.
- C. Decrease IV fluids to a keep vein open (KVO) rate.
- D. Review the last administration of IV pain medication.
Correct answer: C
Rationale: In this scenario, the client is showing signs of fluid volume excess, such as drowsiness, abdominal pain, headache, crackles in the lungs, bounding pulse, and elevated blood pressure. Decreasing the IV fluids to a keep vein open (KVO) rate is crucial to prevent further fluid overload. This intervention helps in balancing fluid intake and output to prevent complications associated with fluid volume excess. Calculating total intake and output (Choice A) may be necessary but not the immediate priority in managing fluid overload. Administering acetaminophen (Choice B) may help with managing the fever but does not address the underlying issue of fluid overload. Reviewing the last administration of IV pain medication (Choice D) is not the priority in this situation where fluid overload is a concern.
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