What pattern of inheritance applies to Cystic Fibrosis?
Mitochondrial
X-linked dominant
Autosomal recessive
Autosomal dominant
The Correct Answer is C
(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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","E"]
Explanation
(A) Thirst: The body increases thirst to compensate for high sodium levels and prevent dehydration.
(B) Seizures: Severe hypernatremia causes neurological symptoms like seizures due to cerebral dehydration.
(C) Dry Mucous Membranes: Water loss leads to dry oral mucosa.
(E) Muscle Weakness: Electrolyte imbalances affect neuromuscular function, leading to weakness.
(D) Bradycardia: Hypernatremia is more likely to cause tachycardia due to dehydration and hypovolemia.
Correct Answer is A
Explanation
(A) Promote diuresis and reduce ascites: Spironolactone is a potassium-sparing diuretic used in cirrhosis to help manage fluid retention and ascites caused by portal hypertension.
(B) Prevent worsening liver damage: Spironolactone does not directly protect the liver.
(C) Reduce blood pressure: Though it can lower BP, this is not its primary use in cirrhosis.
(D) Increase urine output without affecting potassium levels: It spares potassium, but monitoring is still needed to prevent hyperkalemia.
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