Hematology Practice Questions

Q: Which of the following is the LEAST likely indication for intravenous iron administration?

Patients on Erythropoietin Therapy. ### Patients on Erythropoietin Therapy - While patients on **erythropoietin therapy** often require iron supplementation, **oral iron** is usually the first-line choice if tolerated. IV iron is primarily reserved for those who cannot absorb or tolerate oral iron, or have severe iron deficiency, not merely for being on erythropoietin [2]. - The need for iron in this setting is due to the increased demand for red blood cell production, but the route depends on other factors like significant deficiency or inability to use oral routes. *Iron malabsorption* - **Iron malabsorption** prevents adequate iron uptake from the GI tract, making oral iron ineffective [2]. - **Intravenous iron** bypasses the gastrointestinal system, ensuring effective delivery of iron to the body. *Inability to Tolerate oral Iron* - Patients who experience significant **gastrointestinal side effects** (nausea, constipation, diarrhea) from oral iron often cannot adhere to therapy. - **Intravenous iron** avoids these GI side effects, providing an alternative route for necessary iron supplementation. *Intermittent Gastrointestinal blood loss* - **Intermittent GI blood loss** can lead to chronic iron deficiency that is difficult to replete with oral iron alone due to ongoing losses [1, 3]. - **Intravenous iron** can rapidly replenish iron stores and compensate for continuous or significant blood loss more effectively than oral supplementation.

Q: Which of the following are the features of pernicious anemia?

All of the options. ***All of the above*** - Pernicious anemia features include various manifestations like **gastric mucosal atrophy**, **hyper-segmented neutrophils**, and **subacute combined degeneration of the spinal cord**. - It is an autoimmune condition leading to **vitamin B12 deficiency** [1], affecting multiple systems, confirming that all stated features are relevant. *Subacute combined degeneration of spinal cord* - While this condition is seen in **vitamin B12 deficiency**, it is not exclusive to pernicious anemia, as it can occur in **various causes** of B12 deficiency [1]. - The direct link to pernicious anemia is more about **gastric atrophy** and resultant malabsorption rather than spinal cord degeneration itself. *Gastric mucosal atrophy* - Gastric mucosal atrophy is a key feature of pernicious anemia but does not encompass the complete spectrum of its clinical implications. - This condition causes reduced **intrinsic factor production**, leading to vitamin B12 deficiency [1], thus confirming it is part but not all of the features. *Hyper-segmented neutrophils* - Hyper-segmented neutrophils are notably found in megaloblastic anemia due to B12 deficiency [1] but do not exclusively indicate pernicious anemia. - Their presence alone lacks specificity, as they can also arise in **folate deficiency** or other causes of megaloblastic anemia.

Q: Which of the following is a better indicator for transfusion?

Hematocrit level. Hematocrit level - The **hematocrit level** directly measures the proportion of **red blood cells** in the blood, providing an objective indicator of oxygen-carrying capacity. - A low or rapidly falling hematocrit level is a critical **quantitative parameter** often used in transfusion guidelines, especially in the context of acute blood loss or symptomatic anemia. *Skin color* - **Skin color** is a subjective and often unreliable indicator of anemia or the need for transfusion, as pallor can be influenced by many factors [1]. - It does not provide a **quantitative measure** of blood loss or oxygen-carrying capacity. *Physical examination* - While a physical examination can reveal symptomatic anemia (e.g., pallor, tachycardia, orthostatic hypotension), it is a **qualitative assessment** and does not precisely quantify blood loss or oxygen demand [1]. - It should always be complemented by **laboratory tests** to guide transfusion decisions. *Urine output* - **Urine output** is an indicator of **renal perfusion** and overall hydration status, which can be affected by blood volume, but it is not a direct measure of anemia or the need for red blood cell transfusion [2]. - A decreased urine output might suggest hypovolemia or shock, but it doesn't specify if the underlying cause requires **red blood cell replacement** versus fluid resuscitation.

Q: Most sensitive and specific test for the diagnosis of iron deficiency is:

Serum ferritin levels. Most sensitive and specific test for the diagnosis of iron deficiency is: ***Serum ferritin levels*** - **Serum ferritin** is the most sensitive and specific test for diagnosing iron deficiency as it directly reflects the body's iron stores [1]. A low serum ferritin level is indicative of depleted iron stores. - However, **ferritin** can be an **acute phase reactant**, meaning it can be elevated during inflammation or infection, potentially masking iron deficiency in such cases. *Serum iron level* - **Serum iron levels** fluctuate throughout the day and are influenced by recent dietary intake, making them less reliable for assessing overall iron status. - It reflects only the iron currently circulating in the blood, not the total body iron stores. *Serum transferrin receptor populations* - **Serum transferrin receptor levels** increase in iron deficiency and are less affected by inflammation compared to ferritin [2]. - While useful, they are generally not as widely available or routinely used as ferritin for initial diagnosis. *Transferrin saturation* - **Transferrin saturation** measures the percentage of transferrin binding sites occupied by iron. - It is often decreased in iron deficiency but can also be affected by other conditions and has lower sensitivity and specificity compared to ferritin.

Q: Thrombotic event is seen in all of the following except:

Idiopathic thrombocytopenic purpura. ***Immune thrombocytopenic purpura*** - This condition primarily results in **thrombocytopenia**, leading to increased bleeding rather than thrombotic events [1][3]. - Patients typically present with **petechiae** and **purpura**, without the thrombotic complications seen in other conditions [1][3]. *Paroxysmal nocturnal hemoglobinuria* - Characterized by **hemolysis** and a risk of **thrombosis**, particularly in large veins. - Associated with **bone marrow** dysregulation, leading to increased blood viscosity and thrombotic events. *Heparin induced thrombocytopenia* - This condition leads to **thrombocytopenia** and paradoxically **increased thrombosis**, not bleeding. - It is caused by an immune response to heparin, resulting in the activation of platelets. *Disseminated intravascular coagulation* - Involves excessive clotting followed by a risk of bleeding due to **consumption of clotting factors** [1][2]. - Thrombotic events are common, with widespread small thrombi leading to organ dysfunction [2].

Q: Diagnosis of beta thalassemia is established by what?

Hb electrophoresis. Hb electrophoresis - Hemoglobin electrophoresis directly measures the relative proportions of different hemoglobin types (HbA, HbA2, HbF), which is crucial for identifying the characteristic reduction in HbA and elevation of HbA2 and HbF in beta thalassemia. [1] - This method provides a definitive diagnostic profile by separating hemoglobin based on their electrical charge and size, allowing for quantification of abnormal hemoglobin variants. [1] *NESTROFT screening test* - The NESTROFT (Naked Eye Single Tube Red cell Osmotic Fragility Test) is a screening tool used to identify individuals with thalassemia traits and is not a definitive diagnostic test. - While useful for mass screening due to its simplicity and cost-effectiveness, it requires confirmation with more specific tests like hemoglobin electrophoresis. [1] *Hemoglobin A1c test* - The Hemoglobin A1c (HbA1c) test is primarily used to monitor long-term blood glucose control in individuals with diabetes. [2] - It measures the percentage of hemoglobin glycated over a period of 2-3 months and has no direct diagnostic utility for thalassemia. [2] *Presence of target cells in blood smear* - The presence of target cells in a blood smear is a non-specific finding that can be observed in various conditions, including iron deficiency anemia, liver disease, and other hemoglobinopathies, in addition to thalassemia. - While suggestive of a thalassemic disorder, it is not a conclusive diagnostic criterion and requires further investigation with specific diagnostic tests.

Q: Which of the following is not a typical finding in sickle cell anemia?

Splenomegaly usually seen. ***Splenomegaly usually seen*** - In sickle cell anemia, the spleen often becomes **infarcted** due to sickled cells, leading to functional **asplenia** rather than splenomegaly [1]. - **Spleen dysfunction** increases susceptibility to infections, notably from encapsulated organisms [1]. *Enlarged heart* - While **cardiac enlargement** can occur in chronic anemia, it is not a direct and characteristic finding specifically associated with sickle cell anemia. - Other heart findings might include **hypertrophy** due to increased cardiac workload rather than generalized enlargement. *Leukocytosis* - Patients with sickle cell anemia commonly have **leukopenia** due to splenic dysfunction and the sequestration of white blood cells. - Although some acute episodes may cause transient leukocytosis, it is not typical for the disease as a chronic finding. *Fish vertebra* - The term **fish vertebra** refers to the appearance of the spine in conditions like sickle cell anemia due to **vertebral body changes** from infarction. - This feature is associated with the disease [1], contrasting with the correct answer regarding splenomegaly.

Q: Coomb's positive hemolytic anemia is associated with:

Systemic Lupus Erythematosus (SLE). ***Systemic Lupus Erythematosus (SLE)*** - **Autoimmune hemolytic anemia (AIHA)**, including cases with a positive Coombs test, is a common hematologic manifestation of **SLE**, occurring in up to 10% of patients [1]. - In SLE-associated AIHA, autoantibodies—often immunoglobulin G (IgG)—attack red blood cell surfaces, leading to their premature destruction and a **positive Coombs test** [1]. *Polyarteritis Nodosa (PAN)* - PAN is a **necrotizing vasculitis** of small and medium-sized arteries, primarily affecting the kidneys, gut, and nerves. - While it can cause anemia of chronic disease or related to gastrointestinal bleeding, it is not typically associated with **Coombs-positive hemolytic anemia**. *Drug-induced hemolytic anemia* - This condition is caused by **certain medications** (e.g., penicillin, methyldopa) that trigger antibody production against red blood cells or modify their surface to be recognized as foreign. - While it results in a positive Coombs test, it is a **drug-specific reaction** and not inherently associated with a systemic autoimmune disease like those listed. *Thrombotic Thrombocytopenic Purpura (TTP)* - TTP is characterized by a **microangiopathic hemolytic anemia** and **thrombocytopenia**, caused by a deficiency of the ADAMTS13 enzyme. - The hemolysis in TTP is mechanical due to red blood cell fragmentation in tiny clots, resulting in a **negative Coombs test**.

Q: A 60-year-old female with a history of 8 blood transfusions in 2 years, presenting with a hemoglobin level of 60 g/L, total leukocyte count of 5800, platelet count of 3.4 lakhs, mean corpuscular volume of 60, and red blood cell count of 2.11 lakhs/mm3, is diagnosed with hypochromic microcytic anemia. Which investigation is least likely to provide useful information?

Evaluation for pulmonary hemosiderosis. ***Evaluation for pulmonary hemosiderosis*** - This condition involves **iron deposition in the lungs** and is not part of the standard workup for **iron deficiency anemia**. - **Pulmonary hemosiderosis** is a rare condition seen in diseases like Goodpasture syndrome, making it the least relevant investigation here. *Urinary hemosiderin* - Can detect **intravascular hemolysis**, which may be relevant given the patient's transfusion history and ongoing iron deficiency [3]. - Helps identify if **hemolysis** is contributing to iron loss despite multiple transfusions. *Bone marrow examination* - Provides definitive assessment of **iron stores** and can confirm iron deficiency when other tests are inconclusive [3]. - Useful in complex cases where **iron deficiency** persists despite transfusions, indicating massive ongoing blood loss. *GI endoscopy* - Essential for identifying **gastrointestinal bleeding** [2], which could explain iron deficiency despite multiple transfusions. - Helps detect **ulcers**, **tumors**, or other lesions causing chronic blood loss that exceeds iron replacement from transfusions [1], [2].

Q: A patient presents with symptoms including gum hyperplasia and hepatosplenomegaly. Which subtype of acute myeloid leukemia (AML) is most likely?

Acute Myeloid Leukemia (M4). ***M4*** - Acute myeloid leukemia (AML) M4, known as **myelomonocytic leukemia**, often presents with **gum infiltration** and **hepatosplenomegaly**, indicating an aggressive disease course [1]. - The presence of monocytes leads to **extramedullary hematopoiesis**, accounting for the enlargement of organs and gum involvement. *ALL* - Acute lymphoblastic leukemia (ALL) primarily affects lymphoid tissues and typically presents with **lymphadenopathy** and **bone pain**, rather than gum infiltration. - **Hepatosplenomegaly** can occur but is not a primary feature as seen in M4. *M3* - Acute promyelocytic leukemia (M3) is characterized by the presence of **promyelocytes** and is associated with a distinct clinical spectrum, primarily related to **coagulopathy** and not gum infiltration. - While it may present with **hematological abnormalities**, gum infiltration is not a common finding. *M2* - AML M2 is classified as **acute myeloblastic leukemia** and has less frequent **gum infiltration** compared to M4 [1]. - It can also cause **hepatosplenomegaly**, but this is more common in other variants like M4 with its characteristic features.

Question 1

Which of the following is the LEAST likely indication for intravenous iron administration?

Accepted Answer

Patients on Erythropoietin Therapy

Answer

Inability to Tolerate oral Iron

Answer

Iron malabsorption

Answer

Intermittent Gastrointestinal blood loss

Question 2

Which of the following are the features of pernicious anemia?

Accepted Answer

All of the options

Answer

Gastric mucosal atrophy

Answer

Subacute combined degeneration of spinal cord

Answer

Hyper-segmented neutrophils

Question 3

Which of the following is a better indicator for transfusion?

Accepted Answer

Hematocrit level

Answer

Skin color

Answer

Physical examination

Answer

Urine output

Question 4

Most sensitive and specific test for the diagnosis of iron deficiency is:

Accepted Answer

Serum ferritin levels

Answer

Serum iron level

Answer

Serum transferrin receptor populations

Answer

Transferrin saturation

Question 5

Thrombotic event is seen in all of the following except:

Accepted Answer

Idiopathic thrombocytopenic purpura

Answer

Heparin induced thrombocytopenia

Answer

Disseminated intravascular coagulation

Answer

Paroxysmal nocturnal hemoglobinuria

Question 6

Diagnosis of beta thalassemia is established by what?

Accepted Answer

Hb electrophoresis

Answer

NESTROFT screening test

Answer

Hemoglobin A1c test

Answer

Presence of target cells in blood smear

Question 7

Which of the following is not a typical finding in sickle cell anemia?

Accepted Answer

Splenomegaly usually seen

Answer

Enlarged heart

Answer

Leukocytosis

Answer

Fish vertebra

Question 8

Coomb's positive hemolytic anemia is associated with:

Accepted Answer

Systemic Lupus Erythematosus (SLE)

Answer

Drug-induced hemolytic anemia

Answer

Polyarteritis Nodosa (PAN)

Answer

Thrombotic Thrombocytopenic Purpura (TTP)

Question 9

A 60-year-old female with a history of 8 blood transfusions in 2 years, presenting with a hemoglobin level of 60 g/L, total leukocyte count of 5800, platelet count of 3.4 lakhs, mean corpuscular volume of 60, and red blood cell count of 2.11 lakhs/mm3, is diagnosed with hypochromic microcytic anemia. Which investigation is least likely to provide useful information?

Accepted Answer

Evaluation for pulmonary hemosiderosis

Answer

Bone marrow examination

Answer

GI endoscopy

Answer

Urinary hemosiderin

Question 10

A patient presents with symptoms including gum hyperplasia and hepatosplenomegaly. Which subtype of acute myeloid leukemia (AML) is most likely?

Accepted Answer

Acute Myeloid Leukemia (M4)

Answer

Acute Promyelocytic Leukemia (M3)

Answer

Acute Myeloid Leukemia (M2)

Answer

Acute Myeloid Leukemia (M1)

Hematology — MCQs

Hematology — MCQs

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