A patient with a serum calcium level of 7.0 mg/dL is at risk for which condition? (Normal 8.5-10.5 mg/dL)
Tetany
Hypertension
Constipation
Polyuria
The Correct Answer is A
(A) Tetany: Hypocalcemia increases neuromuscular excitability, leading to muscle cramps, spasms, and tetany (involuntary muscle contractions).
(B) Hypertension: Hypocalcemia does not directly cause hypertension; it may lead to hypotension.
(C) Constipation: Hypercalcemia, not hypocalcemia, causes constipation.
(D) Polyuria: Hypercalcemia leads to polyuria, while hypocalcemia does not.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
(A) Prevent constipation: Calcium channel blockers can cause constipation, but metoprolol does not prevent it.
(B) Minimize gingival hyperplasia: Gingival hyperplasia is a side effect of calcium channel blockers, but metoprolol does not counteract it.
(C) Prevent recurrent chest pain: Nifedipine can cause reflex tachycardia, which increases myocardial oxygen demand. Metoprolol (a beta-blocker) prevents this by slowing the heart rate and reducing myocardial workload, thereby preventing angina.
(D) Reduce flushing: Flushing is a side effect of nifedipine, but metoprolol is not used for this purpose.
Correct Answer is D
Explanation
(A) Magnesium is 2.0 mEq/L: Normal range (1.5-2.5 mEq/L), not concerning.
(B) Sodium Level is 136 mEq/L: Normal range (135-145 mEq/L), no immediate risk.
(C) Calcium is 10.1 mEq/L: Normal range (8.5-10.5 mEq/L), not a concern.
(D) Potassium Level is 6.1 mEq/L: Spironolactone is a potassium-sparing diuretic, and hyperkalemia can lead to life-threatening cardiac arrhythmias.
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