A nurse is preparing to administer medications to a client who has syndrome of inappropriate antidiuretic hormone (SIADH). Which of the following medications should the nurse question?
Conivaptan hydrochloride 20 mg IV over 30 minutes STAT
Vasopressin 10 mcg PO daily
Sodium chloride tablets 1 g PO three times daily
Tolvaptan 30 mg PO twice daily
The Correct Answer is B
Choice A Reason:
Conivaptan hydrochloride is a vasopressin receptor antagonist used to treat hyponatremia associated with SIADH. It works by blocking the action of ADH, thereby promoting water excretion without losing sodium. This medication is appropriate for managing SIADH.
Choice B Reason:
Vasopressin, also known as antidiuretic hormone (ADH), is not appropriate for a patient with SIADH. SIADH is characterized by excessive release of ADH, leading to water retention and hyponatremia. Administering vasopressin would exacerbate the condition by increasing water retention and further lowering sodium levels.
Choice C Reason:
Sodium chloride tablets are used to manage hyponatremia by increasing sodium levels in the blood. This treatment is appropriate for patients with SIADH to help correct the sodium imbalance caused by excessive ADH.
Choice D Reason:
Tolvaptan is another vasopressin receptor antagonist that is used to treat hyponatremia associated with SIADH. It helps to increase serum sodium levels by promoting water excretion while retaining sodium. This medication is suitable for managing SIADH.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A Reason:
Taking levothyroxine with high-protein foods can interfere with the absorption of the medication. High-protein foods can bind to the medication, reducing its effectiveness. Therefore, it is not recommended to take levothyroxine with high-protein foods.
Choice B Reason:
While it is important to take levothyroxine with a full glass of water to ensure the tablet is swallowed properly and to aid in its absorption, taking it with fruit juice is not recommended. Certain juices, like grapefruit juice, can interfere with the absorption of levothyroxine.
Choice C Reason:
Levothyroxine should be taken on an empty stomach, ideally 30 to 60 minutes before breakfast or at least 3 to 4 hours after the last meal. This timing helps ensure optimal absorption of the medication. Food can significantly reduce the absorption of levothyroxine, making it less effective.
Choice D Reason:
Taking levothyroxine during a meal is not recommended because food can interfere with the absorption of the medication. It is best to take it on an empty stomach to ensure maximum absorption and effectiveness.
Correct Answer is B
Explanation
Choice A reason:
“Blood flow is altered due to restricted stretching of the ventricles, impairing the heart’s ability to contract” is not accurate in the context of peripheral arterial disease (PAD). PAD primarily affects the arteries outside the heart, particularly those supplying the legs and feet. It is caused by atherosclerosis, which leads to the narrowing and hardening of the arteries, reducing blood flow to the extremities. The statement about restricted stretching of the ventricles and impaired heart contraction is more relevant to conditions like heart failure or cardiomyopathy.
Choice B reason:
“Blood flow is altered due to increased pressure in the arteries” is a more accurate description of PAD. In PAD, the buildup of fatty deposits (plaques) in the arterial walls leads to increased resistance and pressure within the arteries. This condition reduces the flow of oxygenated blood to the limbs, causing symptoms such as pain, cramping, and fatigue, especially during physical activity. Managing PAD involves lifestyle changes, medications, and sometimes surgical interventions to improve blood flow and reduce symptoms.
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