WorksheetsClinical Case: Laboratory Tests for Anemia
Total questions: 30
Worksheet time: 15mins
A 32-year-old woman came to the primary clinic with complaints of persistent fatigue, pallor, and occasional dizziness for the past two months. She reported heavy menstrual bleeding and a diet low in red meat. The physical examination revealed a pulse rate of 100 beats per minute and other vital signs within normal limits. Inspection of the conjunctiva was pale. Laboratory blood tests showed a hemoglobin level of 8 g/dL, accompanied by a low mean corpuscular volume (MCV) and a low mean corpuscular hemoglobin concentration (MCHC). What further laboratory tests are most appropriate to suggest?
Serum ferritin concentration
Blood leucocyte index
Bone marrow biopsy
Total Iron Binding Capacity (TIBC)
Iron serum concentration
A 55-year-old man came to the integrated service posyandu complaining of fatigue and paleness. The client had had diabetes for 10 years and was now diagnosed with chronic kidney failure. The client reported the results of ultrasound imaging and kidney biopsy, which showed massive damage to the structure of the kidney tissue. Blood laboratory examination revealed Hb: 8 g/dL, a decreased erythrocyte count, and MCV and MCHC results within normal limits. What is the most likely diagnosis?
Normochromic normocytic anemia
Chronic Anemia
Normocytic hypochromic anemia
Hypocytic normochromic anemia
Macrocytic normochromic anemia
A 55-year-old man came to the integrated service posyandu complaining of fatigue and paleness. The client had had diabetes for 10 years and was now diagnosed with chronic kidney failure. The client reported the results of ultrasound imaging and kidney biopsy, which showed massive damage to the structure of the kidney tissue. Blood laboratory examination revealed Hb: 8 g/dL, a decreased erythrocyte count, and MCV and MCHC results within normal limits. What is the most appropriate event that happens in patients' erythropoiesis?
Decrease the proliferation erythroblasts
Decreases hemoglobin production
Induces apoptosis of erythrocytes
Decrease iron Binding
Increase differentiation of erythrocyte
A 55-year-old man came to the integrated service posyandu complaining of fatigue and paleness. The client had had diabetes for 10 years and was now diagnosed with chronic kidney failure. The client reported the results of ultrasound imaging and kidney biopsy, which showed massive damage to the structure of the kidney tissue. Blood laboratory examination revealed Hb: 8 g/dL, a decreased erythrocyte count, and MCV and MCHC results within normal limits. Which substance is the most likely to be deficient in causing the problem?
Erythropoietin
Iron
Folic acid
Globin
Heme
A patient living at high altitude mostly experiences hypoxia with elevated erythropoietin levels. Which condition is most likely to be found on his blood gas profile?
Decrease oxygen saturation
Increase carbon dioxide pressure
Increase bicarbonate concentration
Low blood pH
Increase oxygen pressure
A 52-year-old woman presents with fatigue, pallor, and mild jaundice. Laboratory tests reveal macrocytic anemia with hypersegmented neutrophils on peripheral smear. Her serum vitamin B12 level is low. What condition is most likely to be found in her erythropoiesis?
Loss of DNA synthesis for erythroblast
Unstable erythrocyte membrane
Low hemoglobin synthesis
Increase erythropoietin production
Increase iron utilization in the bone marrow
A 58-year-old woman presents with fatigue, glossitis, and paresthesia. Laboratory findings reveal macrocytic anemia, low serum vitamin B12, and positive anti-intrinsic factor antibodies. The diagnosis of pernicious anemia is made. What is the most appropriate structure to be damaged?
Gastric parietal cell
Ileum epithelial cell
Hemoglobin
Hepatocyte
Erythroblast
A 6-year-old boy of Mediterranean descent presents with pallor, fatigue, and mild jaundice. His parents report a family history of anemia. Laboratory tests reveal microcytic hypochromic anemia, characterized by target cells on the peripheral smear. Hemoglobin electrophoresis shows decreased beta-globin chains. Which genetic mutation event is most likely responsible?
Point mutation causing a premature stop codon in the HBB gene
Large chromosomal deletion involving multiple genes
A mutation in promoting number of protein of the alpha-globin gene
Trinucleotide repeat promoting the beta-globin protein expression
Mutation in mitochondrial DNA affecting hemoglobin synthesis
A 10-year-old girl presents with chronic fatigue and pallor. Her complete blood count shows anemia with microcytosis and hypochromia. Hemoglobin electrophoresis reveals an abnormal pattern suggestive of beta-thalassemia. Molecular studies indicate a mutation affecting the splicing of beta-globin pre-mRNA. What process related to mRNA is the most appropriate?
Degradation of the beta-globin mRNA, reducing the amount of functional transcript available for translation
Prevents the transcription of the beta-globin gene, leading to no mRNA production
Enhancement of the stability of beta-globin mRNA, increasing globin chain synthesis
Alteration of the amino acid sequence of alpha-globin chains, causing abnormal hemoglobin
Increase in the rate of translation of beta-globin mRNA, leading to excess beta chains
A 7-year-old boy presents with severe pallor, jaundice, and splenomegaly. His laboratory results show marked anemia with reticulocytosis and elevated serum bilirubin. Peripheral blood smear reveals anisopoikilocytosis and nucleated red blood cells. Genetic testing confirms beta-thalassemia major with mutations causing absent beta-globin chain production. What is the most appropriate primary cellular consequence causing the case above?
Accumulation of unpaired alpha-globin chains causing ineffective erythropoiesis and hemolysis
Increased production of functional hemoglobin tetramers
Enhanced stability of red blood cell membranes leading to prolonged lifespan
Overproduction of beta-globin chains compensates for alpha-globin deficiency
Increased synthesis of fetal hemoglobin (HbF) completely correcting anemia
A newborn of Mediterranean descent undergoes routine neonatal screening. The infant appears healthy, but laboratory tests reveal mild anemia and abnormal hemoglobin electrophoresis suggestive of beta-thalassemia trait. Genetic testing confirms mutations in the HBB gene associated with beta-thalassemia major. What is the most correct initial treatment?
Early transfusion therapy and prevent severe anemia and organ damage
Iron supplementation and prevent iron deficiency anemia
Clinical symptoms related drugs
Symptomatic management and genetic counseling
Folic acid and multi-vitamins intravenously
A 5-year-old child of Southeast Asian descent presents with pallor, fatigue, and mild jaundice. Laboratory evaluation reveals microcytic hypochromic anemia with elevated reticulocyte count. Hemoglobin electrophoresis shows decreased beta-globin and excess alpha-globin chains. What molecular mechanism best explains the result of hemoglobin electrophoresis?
Mutations causing reduced beta-globin synthesis resulting in unpaired alpha chains accumulation
Overproduction of beta-globin mRNA leads to excess beta chains
Deletion of alpha-globin genes causes decreased alpha chain synthesis
Increased degradation of alpha-globin chains by proteasomes
Enhanced translation of beta-globin mRNA compensating for alpha-globin deficiency
A 3-week-old newborn presents with pallor and mild jaundice. The infant was born at term with no complications, but the parents report poor feeding and lethargy. Physical examination reveals mild hepatosplenomegaly. Blood laboratory results show severely low hemoglobin, low MCV, and low MCHC. What is the most determinant next step in managing this newborn?
Suggest confirmatory hemoglobin electrophoresis
Begin empirical antibiotic therapy for sepsis
Schedule routine follow-up in 3 months
Start iron supplementation immediately
Initiate phototherapy
A newborn from a high-prevalence thalassemia region undergoes routine newborn screening, which reveals elevated HbF and absence of HbA. The infant is asymptomatic at birth. Which diagnostic test suggestion best confirms the diagnosis?
DNA analysis
Serum ferritin level
Reticulocyte count
Peripheral blood smear
Spleen function test
A couple with a family history of thalassemia seeks preconception counseling. Both partners are carriers of beta-thalassemia trait. What is the most appropriate and urgent suggestion for a preventive strategy?
Genetic counseling
Natural conception
Delaying pregnancy until after 35 years of age
Iron supplementation during pregnancy
Chorionic villus sampling or amniocentesis
A newborn screening program in a region with high thalassemia prevalence reports a positive screen for alpha-thalassemia trait. The infant is clinically well. What is the best counseling point for the parents regarding the infant prognosis?
The infant is a carrier but may pass the trait to offspring
The infant will require immediate transfusions
The infant has no risk of anemia
The infant starts iron chelation therapy
The infant will develop hydrops fetalis
A newborn screening program uses high-performance liquid chromatography (HPLC) to detect hemoglobinopathies by identifying and measuring the number of hemoglobin chains. A sample shows elevated HbA2 and decreased HbA. What is the most likely diagnosis?
Beta-thalassemia trait
Sickle cell anemia
Alpha-thalassemia major
Iron deficiency anemia
Normal hemoglobin pattern
A 30-year-old man presents to Posyandu with chief complaint of fever. The fever lasts for two days abruptly and is accompanied by moderate runny nose. Laboratory tests confirm infection with influenza virus. Which antigen presentation pathway is most likely primarily responsible?
Presentation of intracellular viral peptides by MHC class I molecules to CD8+ T cells.
Presentation of extracellular antigens by MHC class II molecules to CD4+ T cells.
Presentation of viral antigens by B cells to produce antibodies
Presentation of viral antigens by natural killer (NK) cells
Presentation of viral peptides by MHC class II molecules to CD8+ T cells.
A 45-year-old woman came to the primary clinic with the chief complaint of a rash. The red rash appeared three days ago, accompanied by pain and a sensation of hot skin. She is diagnosed with a bacterial skin infection caused by Staphylococcus aureus. What is the most appropriate primary function of MHC class II molecules in this patient?
Present extracellular bacterial peptides to CD4+ helper T cells
Activate natural killer cells to destroy bacteria
Produce antibodies against bacterial toxins
Directly kill infected cells through cytotoxic activity
Present intracellular bacterial peptides to CD8+ T cells
A 28-year-old man with a history of recurrent herpes simplex virus (HSV) infections presents with prolonged lesions and delayed healing. Laboratory studies reveal that HSV-infected cells show reduced surface expression of MHC class I molecules. What is the most likely primary consequence regarding the HSV-infected cells?
Impaired killing by CD8+ cytotoxic T cells
Enhanced activation of CD4+ T helper cells
Increased antibody production by B cells
Activation of natural killer (NK) cells through MHC class II recognition
Increased phagocytosis by macrophages
A new vaccine against a novel intracellular bacterial pathogen is being developed. The vaccine aims to elicit strong cellular immunity by optimizing antigen presentation to T cells, thereby enhancing their response. Which strategy is most urgent and compelling?
Adding adjuvants that enhance MHC class I and II expression on antigen-presenting cells.
Using inactivated whole bacteria to stimulate antibody production.
Targeting B cells directly to increase antibody titers.
Preventing immune overactivation.
Relying on natural infection to induce immunity.
A 48-year-old woman with chronic HIV infection is enrolled in a trial testing a cytokine-based therapy aimed at restoring immune function and improving antigen presentation. Which cytokine therapy is most likely to be designed?
Use of recombinant IFN-γ to enhance MHC expression
Administration of IL-10 to reduce immune activation
Blockade of IL-12 to prevent excessive inflammation
Neutralization of TNF-α to suppress immune response
Inhibition of IL-1β to reduce inflammation
A 40-year-old man presents with sepsis secondary to bacterial pneumonia. His immune response involves rapid activation of innate immunity and antigen presentation to initiate adaptive immunity. Which function is interleukin-1 beta (IL-1β) most likely involved in?
Promotes inflammation and enhances the migration of dendritic cells to lymph nodes.
Directly increases MHC class I expression on infected cells
Suppresses cytokine production by macrophages
Inhibits T cell activation to prevent tissue damage
Reduces antigen processing in macrophages
A 28-year-old woman presents with fever, malaise, and sore throat. She is diagnosed with acute Epstein-Barr virus (EBV) infection. Laboratory examination for virus structure reveal a DNA virus. Her immune system rapidly activates to clear the virus, relying heavily on antigen presentation to cytotoxic T cells. Which cytokine is primarily responsible for upregulating MHC class I and II on antigen-presenting cells related to the case above?
Interferon-gamma (IFN-γ)
Interleukin-10 (IL-10)
Transforming growth factor-beta (TGF-β)
Interleukin-4 (IL-4)
Tumor necrosis factor-beta (TNF-β)
A 45-year-old man with a history of latent tuberculosis infection develops active pulmonary tuberculosis. His macrophages and dendritic cells are critical in presenting mycobacterial antigens to T cells to mount an effective immune response. Therefore, bacterial clearance and protection from spreading can succeed. Which cytokine is most likely secreted by the APC?
Interleukin-12 (IL-12)
Interleukin-6 (IL-6)
Interleukin-17 (IL-17)
Interleukin-1 beta (IL-1β)
Interleukin-23 (IL-23)
A 35-year-old man presents to the clinic to have a follow up of his chronic HIV. Physical examination revealed a normal measurement. He receives antiretroviral therapy. Blood examinations exhibits progressive immune dysfunction, increase TNF-alpha concentration and increase viral load. What is the most appropriate role of the cytokine above in the viral antigen presentation?
promotes maturation and activation of dendritic cells, enhancing antigen presentation.
suppresses MHC molecule expression, reducing antigen presentation.
induces apoptosis of antigen-presenting cells, impairing the immune response
inhibits cytokine production by antigen-presenting cells
blocks T cell receptor signaling
A 50-year-old woman presents to the hospital with prolonged jaundice. Blood laboratory examination and liver biopsy revealed a chronic hepatitis C viral infection. She is enrolled in a novel immunotherapy, by giving her cytokine injection, aimed at enhancing antigen presentation to improve viral clearance. What is the most appropriate therapy mechanism?
Use of IL-12 to stimulate Th1 responses
Administration of IL-10 to reduce inflammation
Blockade of IFN-γ to prevent tissue damage
Inhibition of TNF-α to suppress immune activation
Neutralization of IL-2 to decrease T cell proliferation.
A 50-year-old woman presents to the hospital with prolonged jaundice. Blood laboratory examination and liver biopsy revealed a chronic hepatitis C viral infection and Elevated serum IL-6 levels are noted, correlating with disease severity. She is enrolled in a novel immunotherapy, which involves giving her a cytokine injection aimed at enhancing antigen presentation to improve viral clearance. What is the most likely role of the cytokine mentioned above?
Enhances differentiation of Th17 cells, indirectly affecting antigen presentation.
Suppresses dendritic cell maturation, reducing antigen presentation.
Promotes differentiation of B cells but inhibits T cell activation.
Directly increases MHC class II expression on macrophages.
Induces apoptosis of antigen-presenting cells.
A 7-year-old boy presents with fever, fatigue, pallor, and recurrent infections. Physical examination reveals a temperature of 38 degrees Celsius, pulse 100 times per minute, and other vital signs in the normal range. Laboratory evaluation reveals pancytopenia and circulating blasts on peripheral smear. Flow cytometry of bone marrow aspirate shows immune cells expressing CD19 and CD10 surface markers. What is the most likely diagnosis?
B-cells Lymphoblastic Leukemia
T-cells Acute Lymphoblastic leukemia
Aplastic bone marrow
Chronic leukemia
Monocytic leukoblast leukemia
A 7-year-old boy presents with fever, fatigue, pallor, and recurrent infections. Physical examination reveals a temperature of 38°C, a pulse of 100 beats per minute, and other vital signs within the normal range. Laboratory evaluation reveals pancytopenia and circulating blasts on peripheral smear. Flow cytometry of the bone marrow aspirate reveals immune cells expressing the CD19 and CD10 surface markers. Cytogenetic analysis reveals the presence of the Philadelphia chromosome t(9;22)(q34;q11). Molecular testing confirms the BCR-ABL fusion gene in leukemic cells. What is the most likely interpretation regarding the diagnosis and prognosis of the disease?
A. A high-risk subtype of ALL that requires targeted therapy with tyrosine kinase inhibitors
B. indicates a favorable prognosis and suggests standard chemotherapy alone is sufficient
C. confirms a diagnosis of T-cell ALL rather than B-cell ALL
D. a nonspecific finding with impact on diagnosis, but no effect on treatment or prognosis
E. suggests the leukemia originated from mature plasma cells
