A patient with thalassemia major who is receiving a blood transfusion shows signs of hemochromatosis.
The nurse anticipates a prescription for which medication?
Methotrexate.
Deferoxamine.
Ferrous gluconate.
Iron dextran complex.
The Correct Answer is B
Choice A rationale:
Methotrexate is a medication used for cancer and autoimmune diseases. It does not chelate iron and is not used to treat iron overload conditions like hemochromatosis.
Choice B rationale:
Deferoxamine is an iron chelating agent used to treat iron overload conditions like hemochromatosis. It binds to excess iron and promotes its excretion from the body, preventing complications such as organ damage.
Choice C rationale:
Ferrous gluconate is an iron supplement used to treat iron deficiency anemia. It would not be appropriate for a patient with hemochromatosis, a condition characterized by iron overload.
Choice D rationale:
Iron dextran complex is another form of intravenous iron used to treat iron deficiency anemia. It is not indicated for treating iron overload conditions like hemochromatosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Buffers do not excrete weak acids; instead, they help regulate the pH of bodily fluids by preventing drastic changes in acidity or alkalinity.
Choice B rationale:
Buffers do not secrete hydrogen ions. In fact, buffers can either absorb or release hydrogen ions to maintain a stable pH.
Choice C rationale:
To convert strong acids to weak acids is the correct answer. Buffers are substances that can neutralize both acids and bases, helping to maintain a stable pH in a solution. They achieve this by accepting hydrogen ions from strong acids or donating hydrogen ions to strong bases, converting them into weaker acids or bases, respectively.
Choice D rationale:
Buffers do not convert ammonia to ammonium ions. This conversion is a part of the body's acid-base regulation system, but it is not the primary function of buffers.
Correct Answer is B
Explanation
Choice A rationale:
Dizziness with a blood pressure of 150/92 mm Hg indicates hypertension, but it is not an immediate life-threatening condition requiring urgent assessment compared to a severe headache and vomiting.
Choice B rationale:
A severe headache and vomiting could be indicative of a serious neurological condition such as a stroke, intracranial bleeding, or increased intracranial pressure. This patient needs urgent assessment and intervention to prevent potential complications.
Choice C rationale:
A hip fracture with a pain level of 2 on a 1-to-10 scale suggests pain but is not immediately life-threatening compared to symptoms like severe headache and vomiting.
Choice D rationale:
Fatigue after receiving an ACE inhibitor is a common side effect and, while important to monitor, does not pose an immediate threat compared to the symptoms of severe headache and vomiting.
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