#1
Which medication is commonly used as a first-line treatment for iron deficiency anemia?
Oral iron supplements
ExplanationOral iron supplements are the primary treatment for iron deficiency anemia due to their ability to replenish depleted iron stores.
#2
Which medication is commonly used to prevent or treat thrombotic events in patients with atrial fibrillation?
Rivaroxaban (Xarelto)
ExplanationRivaroxaban is a direct factor Xa inhibitor that prevents the formation of blood clots, reducing the risk of thrombotic events in patients with atrial fibrillation.
#3
Which medication is commonly used in the treatment of hemophilia A by replacing the missing or deficient factor VIII?
Factor VIII concentrate
ExplanationFactor VIII concentrate contains concentrated factor VIII, which is administered to replace the deficient clotting factor in patients with hemophilia A, facilitating normal blood clotting.
#4
Which medication is commonly used to treat venous thromboembolism by inhibiting thrombin?
Dabigatran (Pradaxa)
ExplanationDabigatran directly inhibits thrombin, a key enzyme in the coagulation cascade, thereby preventing the formation of fibrin clots and reducing the risk of venous thromboembolism.
#5
Which medication is commonly used in the treatment of autoimmune hemolytic anemia to suppress the immune system?
Cyclophosphamide
ExplanationCyclophosphamide is an alkylating agent that suppresses the immune system by inhibiting the proliferation of lymphocytes and antibody-producing cells, thus reducing the destruction of red blood cells in autoimmune hemolytic anemia.
#6
What is the primary mechanism of action of hydroxyurea in the treatment of sickle cell disease?
Induction of fetal hemoglobin synthesis
ExplanationHydroxyurea induces the production of fetal hemoglobin, which can improve the symptoms of sickle cell disease by inhibiting the polymerization of sickle hemoglobin.
#7
Which of the following medications is a reversible inhibitor of both cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2)?
Ibuprofen
ExplanationIbuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits both COX-1 and COX-2 enzymes, leading to its analgesic, anti-inflammatory, and antipyretic effects.
#8
What is the primary mode of action of epoetin alfa (Epogen/Procrit) in the management of anemia associated with chronic kidney disease?
Stimulation of red blood cell production
ExplanationEpoetin alfa stimulates erythropoiesis, leading to increased red blood cell production and subsequent improvement in anemia associated with chronic kidney disease.
#9
Which of the following drugs is a monoclonal antibody targeting CD20 antigen and is used in the treatment of non-Hodgkin's lymphoma and chronic lymphocytic leukemia?
Rituximab
ExplanationRituximab specifically targets the CD20 antigen on B lymphocytes, leading to antibody-dependent cellular cytotoxicity and complement-mediated cell lysis, resulting in the depletion of malignant B cells in non-Hodgkin's lymphoma and chronic lymphocytic leukemia.
#10
What is the primary mechanism of action of apixaban (Eliquis) in the prevention and treatment of venous thromboembolism?
Inhibition of factor Xa
ExplanationApixaban directly inhibits factor Xa, a key component in the coagulation cascade, thereby preventing the formation of thrombin and subsequent blood clot formation in the prevention and treatment of venous thromboembolism.
#11
Which of the following medications is a proteasome inhibitor used in the treatment of multiple myeloma?
Bortezomib
ExplanationBortezomib inhibits the proteasome, leading to the accumulation of misfolded proteins and induction of apoptosis in multiple myeloma cells, making it an effective treatment for this malignancy.
#12
What is the primary mechanism of action of filgrastim (Neupogen) in the management of neutropenia?
Stimulation of white blood cell production
ExplanationFilgrastim stimulates the production of neutrophils from bone marrow precursor cells, thereby increasing the absolute neutrophil count and reducing the duration of neutropenia.
#13
Which factor is targeted by warfarin (Coumadin) for its anticoagulant effect?
Factor II (Prothrombin)
ExplanationWarfarin inhibits the activity of vitamin K epoxide reductase, thereby preventing the formation of active vitamin K-dependent clotting factors, including Factor II (Prothrombin).
#14
What is the primary mechanism of action of lenalidomide in the treatment of multiple myeloma?
Modulation of microenvironmental factors
ExplanationLenalidomide acts by modulating the tumor microenvironment, enhancing immune responses against myeloma cells, and inhibiting angiogenesis, leading to its therapeutic effects in multiple myeloma.
#15
In the treatment of polycythemia vera, which medication is commonly used to reduce elevated hematocrit levels and decrease the risk of thrombotic events?
Hydroxyurea
ExplanationHydroxyurea suppresses bone marrow activity, leading to a reduction in red blood cell production and lowering hematocrit levels, thus decreasing the risk of thrombotic events in polycythemia vera.
#16
What is the primary mechanism of action of romiplostim (Nplate) in the treatment of immune thrombocytopenic purpura (ITP)?
Stimulation of platelet production
ExplanationRomiplostim mimics the action of thrombopoietin, stimulating the production of platelets from megakaryocytes, thereby increasing platelet counts in immune thrombocytopenic purpura (ITP).
#17
In the management of hemophilia B, which medication is used to replace the missing or deficient factor IX?
Factor IX concentrate
ExplanationFactor IX concentrate contains concentrated factor IX, which is administered to replace the deficient clotting factor in patients with hemophilia B, facilitating normal blood clotting.
#18
What is the primary mode of action of romosozumab (Evenity) in the treatment of osteoporosis?
Stimulation of bone formation
ExplanationRomosozumab inhibits sclerostin, a protein that inhibits bone formation, thereby promoting osteoblastic activity and increasing bone formation, which helps in the treatment of osteoporosis.
#19
In the management of hemophilia A, which medication is used to temporarily increase the concentration of factor VIII in the blood?
Desmopressin (DDAVP)
ExplanationDesmopressin (DDAVP) stimulates the release of von Willebrand factor and factor VIII from endothelial cells, temporarily increasing their levels in the blood and improving hemostasis in patients with hemophilia A.