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) Mitochondrial: CF is not maternally inherited through mitochondrial DNA.
(B) X-linked Dominant: CF does not involve the X chromosome.
(C) Autosomal Recessive: Cystic fibrosis (CF) occurs when an individual inherits two mutated copies of the CFTR gene (one from each parent). Both parents must be carriers for a child to develop the disease.
(D) Autosomal Dominant: CF requires two copies of the mutated gene, unlike dominant disorders that require only one.
Correct Answer is C
Explanation
(A) Potassium level of 4.0 mEq/L: Normal range (3.5-5.0 mEq/L), does not indicate CKD.
(B) Blood urea nitrogen (BUN) of 18 mg/dL: BUN can fluctuate with hydration status and is not the most specific CKD marker.
(C) Serum creatinine of 5.0 mg/dL: Creatinine is a direct marker of kidney function. A level above 1.2 mg/dL suggests dysfunction, and 5.0 mg/dL is severely elevated, indicating CKD.
(D) Urine specific gravity of 1.015: Falls within the normal range (1.010-1.030), does not indicate CKD.
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