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 ["A","C"]
Explanation
Choice A Reason:
Acetaminophen is often used to manage pain and fever associated with pericarditis. It is a common analgesic and antipyretic that helps alleviate discomfort without causing significant gastrointestinal side effects. However, it does not have anti-inflammatory properties, so it is typically used in conjunction with other medications that address inflammation.
Choice B Reason:
Amiodarone is an antiarrhythmic medication used to treat and prevent various types of serious irregular heartbeats, such as ventricular tachycardia or ventricular fibrillation. It is not typically used for treating pericarditis, as it does not address the inflammation or pain associated with the condition.
Choice C Reason:
Indomethacin is a nonsteroidal anti-inflammatory drug (NSAID) that is effective in reducing inflammation and pain associated with pericarditis. NSAIDs are commonly prescribed for pericarditis to help manage symptoms and reduce inflammation. Indomethacin, along with other NSAIDs like ibuprofen, is often part of the first-line treatment for this condition.
Correct Answer is D
Explanation
Choice A reason:
Thickening of the walls of the ventricles is not typically associated with restrictive cardiomyopathy (RCM). This condition is more characteristic of hypertrophic cardiomyopathy (HCM), where the heart muscle becomes abnormally thick, making it harder for the heart to pump blood. In RCM, the walls of the ventricles are usually not thickened but become rigid due to fibrosis or infiltration, which restricts the heart’s ability to fill with blood during diastole.
Choice B reason:
Stretching of the ventricles is more commonly seen in dilated cardiomyopathy (DCM), not restrictive cardiomyopathy. In DCM, the heart’s ventricles become enlarged and weakened, which impairs the heart’s ability to pump blood efficiently. RCM, on the other hand, involves stiffening of the ventricular walls without significant dilation.
Choice C reason:
Thickening of the ventricular walls and septum is a hallmark of hypertrophic cardiomyopathy (HCM), not restrictive cardiomyopathy. In HCM, the thickened walls can obstruct blood flow and lead to various complications. RCM is characterized by the stiffening of the ventricular walls due to fibrosis or infiltration, which restricts diastolic filling.
Choice D reason:
When the ventricular tissue becomes fibrous and fatty is the correct description of restrictive cardiomyopathy (RCM). In RCM, the heart’s ventricles become stiff and less elastic due to fibrosis (scarring) or infiltration by abnormal substances, such as amyloid proteins. This rigidity impairs the heart’s ability to fill properly during diastole, leading to symptoms of heart failure
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