The nurse is reviewing the diagnostic studies on a client diagnosed with primary brain cancer. Which lab result would the nurse report to the Primary Care Practitioner (PCP) immediately?
|
Electrolyte |
Normal Value Range |
|
Serum sodium |
135-145 mEq/L |
|
Serum chloride |
97-107 mEq/L |
|
Serum potassium |
3.5-5:3 mEq/L |
|
Serum magnesium |
1.6-2.2 mg/dL |
|
Total serum calcium |
8.2-10.2 mg/dL |
|
lonized calcium |
4.6-5.3 mg/dL |
|
Serum phosphorus |
2.5-4.5 mg/dL |
|
Serum osmolality |
275-295 mOsm/kg |
|
Urine osmolality |
250-900 mOsm/kg |
Magnesium 2.0 mEq/L
Sodium 126 mEq/L
Potassium 3.5 mEq/L
Calcium 10 mg/L
The Correct Answer is B
A. Magnesium at 2.0 mEq/L is within the normal range (1.6-2.2 mg/dL) and does not require immediate intervention.
B. A serum sodium level of 126 mEq/L indicates hyponatremia, which can lead to neurological complications, particularly in patients with brain cancer. Immediate reporting is necessary to manage potential risks such as seizures or altered mental status.
C. A potassium level of 3.5 mEq/L is on the lower limit of normal (3.5-5.3 mEq/L) but is still considered acceptable and does not require urgent action.
D. Calcium at 10 mg/L is an incorrect unit for this context, as total serum calcium is typically measured in mg/dL, and 10 mg/dL falls within the normal range (8.2-10.2 mg/dL).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. The prone position is not suitable post-craniotomy as it can increase intracranial pressure and may compromise respiratory function.
B. The dorsal recumbent position is not ideal for patients post-craniotomy, as it can hinder optimal intracranial pressure management.
C. The lateral recumbent position is generally avoided immediately after craniotomy to prevent pressure on the surgical site and ensure proper cerebral perfusion.
D. The Semi-Fowler's position helps reduce intracranial pressure, promotes venous drainage, and is generally recommended for post-operative care following a craniotomy.
Correct Answer is B
Explanation
A. Inserting an oral airway and suctioning may be indicated for airway management, but the primary concern is the impaired function of the glossopharyngeal and vagus nerves, which affects swallowing and the risk of aspiration.
B. Withholding oral fluids or foods is crucial because impaired function of these cranial nerves increases the risk of aspiration and can lead to choking or pneumonia, making this the priority action.
C. Speaking clearly while facing the client is a good communication practice but does not address the immediate concern of impaired swallowing and risk of aspiration.
D. Applying artificial tears is important for protecting the cornea, but it is not directly related to the functions of CN IX and CN X or the immediate management of swallowing difficulties.
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