Which of the following is administered to increase the number of circulating red blood cells?
Oprelvekin (Neumega)
Epoetin alfa (Procrit)
Clopidogrel (Plavix)
Filgrastim (Neupogen)
The Correct Answer is B
A. Oprelvekin (Neumega): Oprelvekin is a recombinant human interleukin-11 (IL-11) used to stimulate the production of platelets, not red blood cells. It is primarily indicated for patients with thrombocytopenia (low platelet count) due to chemotherapy.
B. Epoetin alfa (Procrit): Epoetin alfa is a synthetic form of erythropoietin, a hormone produced by the kidneys that stimulates the production of red blood cells in the bone marrow. It is commonly used to treat anemia associated with chronic kidney disease, chemotherapy, or HIV therapy. Therefore, it is administered to increase the number of circulating red blood cells.
C. Clopidogrel (Plavix): Clopidogrel is an antiplatelet medication that inhibits platelet aggregation, thereby reducing the risk of blood clots. It does not directly stimulate the production of red blood cells.
D. Filgrastim (Neupogen): Filgrastim is a recombinant human granulocyte colony-stimulating factor (G-CSF) that stimulates the production of white blood cells, particularly neutrophils, in the bone marrow. It is used to treat neutropenia (low white blood cell count) caused by chemotherapy, bone marrow transplantation, or certain diseases. It does not directly stimulate the production of red blood cells.
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Related Questions
Correct Answer is C
Explanation
A. Hypothermia: Clopidogrel is not typically associated with temperature regulation and wouldn't cause hypothermia.
B. Hypotension: While some medications can cause low blood pressure (hypotension), clopidogrel is not a common culprit.
C. Black stools: This can be a sign of upper gastrointestinal bleeding, which is a potential side effect of clopidogrel. Clopidogrel inhibits platelet aggregation, which can increase bleeding risk.
D. Constipation: Constipation is not a common side effect of clopidogrel.
Correct Answer is {"dropdown-group-1":"A","dropdown-group-2":"A"}
Explanation
a. Hemostasis: Hemostasis refers to the process of stopping bleeding or preventing excessive blood loss. It involves several steps, including vasoconstriction, platelet aggregation, and clot formation. Hemostasis is the correct answer because it directly addresses the stopping of blood flow to protect the body from injury.
b. Thrombolytics: Thrombolytics are medications used to dissolve blood clots. They are not the natural mechanism for stopping blood flow. Thrombolytics are not the correct answer in this context.
c. Hematopoiesis: Hematopoiesis is the process of forming blood cells (including red blood cells, white blood cells, and platelets) in the bone marrow. It is essential for maintaining blood cell populations but does not directly stop blood flow. Hematopoiesis is not related to stopping blood flow.
d. Anticoagulation: Anticoagulation refers to preventing blood clot formation. While it is important for certain medical conditions, it does not directly stop blood flow. Anticoagulation is not the primary mechanism for stopping bleeding.
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