The nurse is caring for a client who has thrombocytopenia.
Which of the following will the nurse administer for this disorder?
Corticosteroid.
Diphenhydramine.
Desmopressin (DDAVP).
Hydrochlorothiazide (HCTZ).
The Correct Answer is A
Choice A rationale
Corticosteroids are used in thrombocytopenia because they suppress the immune response, particularly in immune thrombocytopenic purpura (ITP). They reduce platelet destruction by inhibiting autoantibody formation and increasing platelet lifespan. Normal platelet count ranges from 150,000 to 400,000/µL. Thrombocytopenia occurs when platelets drop below 150,000/µL, increasing bleeding risk. Corticosteroids can also decrease capillary permeability, minimizing petechiae and ecchymoses.
Choice B rationale
Diphenhydramine, an antihistamine, is used for allergic reactions but has no role in treating thrombocytopenia. It does not address the underlying immune or hematologic causes of low platelet counts. Its primary actions include H1 receptor antagonism, reducing histamine-mediated symptoms like itching and swelling. However, it lacks immunosuppressive or hematologic-stimulating effects essential for managing thrombocytopenia.
Choice C rationale
Desmopressin (DDAVP) is a synthetic antidiuretic hormone analog used for certain bleeding disorders like von Willebrand disease or mild hemophilia A. It increases factor VIII and von Willebrand factor levels, improving clotting. However, it is not indicated for thrombocytopenia as it does not address platelet count deficiencies or immune-mediated platelet destruction.
Choice D rationale
Hydrochlorothiazide (HCTZ) is a thiazide diuretic used for hypertension and edema. Its mechanism of action involves inhibiting sodium reabsorption in the distal tubule, promoting diuresis. HCTZ has no effect on platelet counts or immune mechanisms and is not used in thrombocytopenia. Its side effects, like electrolyte imbalances, may complicate patient management.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Teaching preventive measures is important for reducing recurrence of urinary tract infections (UTIs). These measures may include proper hydration, perineal hygiene, and urinating after intercourse. However, addressing preventive strategies is a long-term consideration and not the immediate priority for managing the active infection or preventing acute complications.
Choice B rationale
Preventing progression to complications is the priority in lower UTIs to avoid upper urinary tract involvement, such as pyelonephritis. This involves timely antibiotic administration and monitoring for signs like fever, flank pain, or worsening urinary symptoms. Pyelonephritis can lead to systemic complications like sepsis, making prevention critical to client safety.
Choice C rationale
Educating about treatment, such as the prescribed antibiotics and their potential side effects, ensures adherence and understanding. While valuable, it does not take precedence over immediate measures to halt disease progression or complications. Education supports long-term management but follows urgent clinical priorities.
Choice D rationale
Pain management is essential for comfort, addressing dysuria or pelvic pain associated with UTIs. Methods include analgesics like phenazopyridine. However, it is a supportive measure rather than a critical intervention for preventing complications, making it secondary to stopping the progression of the infection.
Correct Answer is ["A","B","C","D"]
Explanation
Choice A rationale
Restricting sodium intake is essential as high sodium levels can increase fluid retention, leading to elevated blood pressure. A low-sodium diet reduces the workload on blood vessels and decreases the risk of cardiovascular complications associated with hypertension. The recommended sodium intake for adults should be less than 2,300 mg per day, and ideally closer to 1,500 mg daily for optimal blood pressure control.
Choice B rationale
Hypertension can lead to damage to the small blood vessels in the retina, resulting in hypertensive retinopathy. Stressing ophthalmic care ensures early detection and management of vision changes that may be indicative of ongoing vascular damage. Regular ophthalmologic evaluation aids in preventing irreversible vision loss and allows better management of systemic hypertension's effects on ocular health.
Choice C rationale
Increasing the intake of fruits and vegetables provides essential nutrients such as potassium, magnesium, and dietary fiber. Potassium helps counteract the effects of sodium and relaxes blood vessel walls, lowering blood pressure. The DASH diet, rich in fruits and vegetables, is widely recommended for individuals with hypertension to promote cardiovascular health and regulate blood pressure.
Choice D rationale
Taking prescribed medications as ordered ensures consistent management of blood pressure and prevention of complications such as stroke, heart attack, and kidney damage. Antihypertensive medications, including ACE inhibitors, beta-blockers, or diuretics, work through various mechanisms to lower blood pressure. Adherence prevents fluctuations and maintains target levels of less than 140/90 mmHg.
Choice E rationale
Not taking medication when blood pressure is less than 140/90 mmHg is incorrect because hypertension management requires consistent medication to maintain target levels and prevent rebound hypertension. Abrupt discontinuation can lead to complications such as severe hypertensive episodes and organ damage. Regular monitoring is crucial to guide therapy adjustments safely.
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