A client with acute kidney injury (AKI) has a serum potassium level of 6.5 mEq/L. The nurse recognizes that administering IV calcium gluconate to this client will result in which of the following effects?
Potassium will be removed from the body and excreted in the stool.
The heart will be protected from dysrhythmias while the serum potassium is elevated.
Potassium will temporarily shift from the blood into the cells.
Serum potassium levels will increase further due to this medication being administered.
The Correct Answer is B
A. Calcium gluconate does not directly affect the elimination of potassium from the body or its excretion in the stool. It does not act on the kidneys or gastrointestinal tract to remove potassium. Its primary role is to stabilize the cardiac membrane.
B. Calcium gluconate stabilizes the cardiac membrane and reduces the risk of dysrhythmias associated with elevated serum potassium levels. Hyperkalemia can increase the risk of cardiac arrhythmias, and calcium gluconate helps to counteract these effects by protecting the heart muscle.
C. Calcium gluconate does not cause potassium to shift from the blood into the cells. The shift of potassium into cells is typically induced by other treatments such as insulin and glucose or beta- agonists. Calcium gluconate does not have this effect.
D. Calcium gluconate does not increase serum potassium levels. It primarily serves to protect the heart from the effects of high potassium levels. It does not have a direct effect on the potassium level itself but helps manage the consequences of hyperkalemia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. This is a pre-renal cause of acute kidney injury, related to decreased blood flow to the kidneys.
B. This is a post-renal cause of acute kidney injury, as it obstructs the outflow of urine.
C. This is an intrarenal cause of acute kidney injury, directly affecting the kidney tissue.
D. This is an intrarenal cause of acute kidney injury, related to damage to the small blood vessels in the kidneys.
Correct Answer is C
Explanation
A. While this medication is used to treat hyperkalemia, it is a slower acting treatment. Given the patient's critical condition with altered mental status, hyperkalemia, and elevated BUN, a more rapid intervention is needed.
B. Fluid resuscitation is important in some cases of AKI but it is not the priority in this patient. The patient is already showing signs of fluid overload (crackles in the lungs) and the primary issue is the inability of the kidneys to remove waste products and excess fluids.
C. This is the most appropriate treatment for this patient. RRT, such as hemodialysis or continuous renal replacement therapy (CRRT), can rapidly remove waste products, excess fluid, and electrolytes from the blood, correcting the imbalances and improving the patient's condition.
D. This medication is used for long-term management of hyperkalemia, but it is not effective in an acute setting like this.
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