A client with chronic kidney disease develops hypocalcemia.
Which electrolyte imbalance is most commonly associated with this condition?
Hypokalemia.
Hypernatremia.
Hyperphosphatemia.
Hyponatremia.
The Correct Answer is C
Managing chronic kidney disease requires understanding the reciprocal relationship between calcium and phosphorus. Knowledge of renal osteodystrophy, vitamin D activation, and the role of the parathyroid hormone in mineral homeostasis is essential to identify the associated electrolyte shift.
Choice A rationale
Hypokalemia is not the primary association with hypocalcemia in kidney failure. Chronic kidney disease usually results in hyperkalemia, where potassium exceeds 5.0 mEq/L, because the failing kidneys cannot effectively excrete excess potassium ions into the urine.
Choice B rationale
Hypernatremia is an elevation of sodium above 145 mEq/L and is not directly linked to the calcium-phosphorus axis. While fluid balance is impaired in renal failure, sodium levels vary based on fluid volume status rather than hypocalcemia.
Choice C rationale
In kidney failure, phosphorus excretion decreases, leading to hyperphosphatemia. High serum phosphorus (above 4.5 mg/dL) binds with calcium, causing hypocalcemia (below 8.5 mg/dL). Additionally, decreased vitamin D activation in the kidneys further reduces calcium absorption from the gut.
Choice D rationale
Hyponatremia, or sodium below 135 mEq/L, often results from fluid overload in renal patients but is not the metabolic driver of low calcium. The hallmark mineral imbalance involves the inverse relationship specifically between serum phosphate and ionized calcium.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Post-operative skin graft care focuses on maximizing graft take by reducing edema and preventing shearing. Knowledge of tissue perfusion and fluid dynamics is necessary to prioritize actions that minimize swelling, which can lift the graft from the bed.
Choice A rationale
Elevating the affected extremity reduces edema at the graft site by promoting venous return. Excessive swelling can separate the new graft from the underlying vascular bed, preventing necessary revascularization and leading to graft failure or necrosis.
Choice B rationale
Inspecting the graft site is important, but the nurse should generally not disturb the initial surgical dressing. Frequent inspection increases the risk of shearing or dislodging the delicate graft before it has successfully adhered to the site.
Choice C rationale
Ensuring the patient does not lie on the graft is a standard intervention to prevent pressure and shearing. However, in the presence of noted edema, elevation is the priority action to ensure the graft remains viable.
Choice D rationale
Administering analgesics addresses the pain level of 6/10, which is important for comfort. However, pain is expected, whereas reducing edema through elevation is functionally more critical to the physiological success and survival of the graft.
Correct Answer is D
Explanation
The scenario requires applying family systems theory and interdisciplinary communication principles within hospice care. Effective coping begins by clarifying the support structure available to the family, necessitating an understanding of how various professional roles function to alleviate the burden of end of life care.
Choice A rationale
Planning for hospital readmission contradicts the primary goal of hospice, which focuses on maintaining a comfortable home death. Focusing on hospitalization initially can create anxiety and undermine the family's confidence in managing the client's care at home.
Choice B rationale
Hospice typically provides intermittent visits rather than continuous 24-hour home care. Suggesting the nurse will meet all daily basic needs is unrealistic and provides false expectations, which can negatively impact the family's long-term ability to cope with caregiving.
Choice C rationale
While bereavement support is a standard component of hospice services, discussing post-death visits during the initial assessment is premature. Families need immediate support strategies and role clarity to manage the active dying process before focusing on aftercare services.
Choice D rationale
Clarifying the roles of the interdisciplinary team empowers the family by identifying specific resources for physical, emotional, and spiritual needs. This foundational knowledge reduces uncertainty, establishes a support network, and is the essential first step in facilitating effective coping.
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