NR 507 Exam 2: Advanced Pathophysiology V3 Updated
and Latest Questions and Correct Answers with Rationale
1. Which type of anemia is characterized by a deficiency in intrinsic factor?
A. Iron deficiency anemia
B. Aplastic anemia
C. Pernicious anemia
D. Hemolytic anemia
Ans: C
Rationale: Pernicious anemia results from a deficiency in intrinsic factor. Intrinsic factor is essential for
the absorption of vitamin B12 in the ileum. This condition often stems from an autoimmune destruction
of gastric parietal cells. Without sufficient B12, DNA synthesis is impaired in maturing red blood cells.
Characteristic findings include macrocytic-normochromic cells and neurological deficits. Lifelong
administration of vitamin B12 is required to prevent complications.
2. Iron deficiency anemia typically presents with which of the following cell characteristics?
A. Macrocytic and hypochromic
B. Macrocytic and normochromic
C. Normocytic and normochromic
D. Microcytic and hypochromic
Ans: D
,Rationale: Iron deficiency anemia is the most common nutritional disorder worldwide. It typically
involves microcytic and hypochromic red blood cells on a smear. Depleted iron stores lead to reduced
hemoglobin synthesis within the bone marrow. Causes include chronic blood loss, poor dietary intake, or
increased demand. Symptoms often manifest as pica, spoon-shaped nails, and generalized fatigue. Serum
ferritin levels are usually the most sensitive indicator of low stores.
3. What is the primary pathophysiology behind Polycythemia Vera?
A. Chronic hypoxia causing secondary erythrocytosis
B. Iron overload in the liver and spleen
C. Dehydration leading to relative erythrocytosis
D. A stem cell disorder with hyperplastic bone marrow
Ans: D
Rationale: Polycythemia vera is a primary myeloproliferative neoplasm involving bone marrow
hyperactivity. It results in an excessive production of red blood cells, leukocytes, and platelets. The blood
becomes hyperviscous, which significantly increases the risk of thrombosis. Clinical manifestations
include a ruddy complexion, headache, and visual disturbances. Aquatic pruritus is a classic symptom
often reported by these patients. Management typically focuses on phlebotomy to reduce red cell mass
and viscosity.
,4. Which virus is the most common cause of Infectious Mononucleosis?
A. Human Immunodeficiency Virus
B. Cytomegalovirus
C. Varicella-Zoster Virus
D. Epstein-Barr Virus
Ans: D
Rationale: Infectious mononucleosis is primarily caused by the Epstein-Barr virus infecting B
lymphocytes. It is characterized by a triad of fever, sore throat, and lymphadenopathy. The virus is
commonly transmitted through saliva, often nicknamed the kissing disease. Laboratory findings typically
show lymphocytosis and the presence of atypical lymphocytes. Splenomegaly is a significant concern
during the acute phase of illness. Patients are advised to avoid contact sports to prevent splenic rupture.
5. The presence of Reed-Sternberg cells is diagnostic for which condition?
A. Non-Hodgkin Lymphoma
B. Hodgkin Lymphoma
C. Chronic Myeloid Leukemia
D. Multiple Myeloma
Ans: B
Rationale: Hodgkin lymphoma is defined by the presence of large, multinucleated Reed-Sternberg cells.
These malignant cells are typically found within the lymph nodes and bone marrow. The disease usually
spreads in a contiguous and predictable manner between node groups. Clinical symptoms often include
, painless lymphadenopathy and systemic B symptoms like night sweats. It has a distinctive bimodal age
distribution, affecting young adults and the elderly. Advancements in chemotherapy and radiation have
significantly improved the cure rate.
6. What occurs during Disseminated Intravascular Coagulation (DIC)?
A. Primary failure of the bone marrow to produce platelets
B. Excessive systemic clotting followed by widespread hemorrhage
C. An isolated deficiency of Factor VIII in the plasma
D. Excessive production of red blood cells leading to stroke
Ans: B
Rationale: DIC is a complex acquired disorder involving paradoxical clotting and hemorrhage. It is
triggered by endothelial damage or the release of tissue factor. Extensive thrombin generation leads to
widespread microvascular thrombosis throughout the body. This process consumes platelets and clotting
factors, eventually leading to severe bleeding. It is often a secondary complication of sepsis, trauma, or
cancer. Treatment must prioritize the management of the underlying cause while providing supportive
care.
and Latest Questions and Correct Answers with Rationale
1. Which type of anemia is characterized by a deficiency in intrinsic factor?
A. Iron deficiency anemia
B. Aplastic anemia
C. Pernicious anemia
D. Hemolytic anemia
Ans: C
Rationale: Pernicious anemia results from a deficiency in intrinsic factor. Intrinsic factor is essential for
the absorption of vitamin B12 in the ileum. This condition often stems from an autoimmune destruction
of gastric parietal cells. Without sufficient B12, DNA synthesis is impaired in maturing red blood cells.
Characteristic findings include macrocytic-normochromic cells and neurological deficits. Lifelong
administration of vitamin B12 is required to prevent complications.
2. Iron deficiency anemia typically presents with which of the following cell characteristics?
A. Macrocytic and hypochromic
B. Macrocytic and normochromic
C. Normocytic and normochromic
D. Microcytic and hypochromic
Ans: D
,Rationale: Iron deficiency anemia is the most common nutritional disorder worldwide. It typically
involves microcytic and hypochromic red blood cells on a smear. Depleted iron stores lead to reduced
hemoglobin synthesis within the bone marrow. Causes include chronic blood loss, poor dietary intake, or
increased demand. Symptoms often manifest as pica, spoon-shaped nails, and generalized fatigue. Serum
ferritin levels are usually the most sensitive indicator of low stores.
3. What is the primary pathophysiology behind Polycythemia Vera?
A. Chronic hypoxia causing secondary erythrocytosis
B. Iron overload in the liver and spleen
C. Dehydration leading to relative erythrocytosis
D. A stem cell disorder with hyperplastic bone marrow
Ans: D
Rationale: Polycythemia vera is a primary myeloproliferative neoplasm involving bone marrow
hyperactivity. It results in an excessive production of red blood cells, leukocytes, and platelets. The blood
becomes hyperviscous, which significantly increases the risk of thrombosis. Clinical manifestations
include a ruddy complexion, headache, and visual disturbances. Aquatic pruritus is a classic symptom
often reported by these patients. Management typically focuses on phlebotomy to reduce red cell mass
and viscosity.
,4. Which virus is the most common cause of Infectious Mononucleosis?
A. Human Immunodeficiency Virus
B. Cytomegalovirus
C. Varicella-Zoster Virus
D. Epstein-Barr Virus
Ans: D
Rationale: Infectious mononucleosis is primarily caused by the Epstein-Barr virus infecting B
lymphocytes. It is characterized by a triad of fever, sore throat, and lymphadenopathy. The virus is
commonly transmitted through saliva, often nicknamed the kissing disease. Laboratory findings typically
show lymphocytosis and the presence of atypical lymphocytes. Splenomegaly is a significant concern
during the acute phase of illness. Patients are advised to avoid contact sports to prevent splenic rupture.
5. The presence of Reed-Sternberg cells is diagnostic for which condition?
A. Non-Hodgkin Lymphoma
B. Hodgkin Lymphoma
C. Chronic Myeloid Leukemia
D. Multiple Myeloma
Ans: B
Rationale: Hodgkin lymphoma is defined by the presence of large, multinucleated Reed-Sternberg cells.
These malignant cells are typically found within the lymph nodes and bone marrow. The disease usually
spreads in a contiguous and predictable manner between node groups. Clinical symptoms often include
, painless lymphadenopathy and systemic B symptoms like night sweats. It has a distinctive bimodal age
distribution, affecting young adults and the elderly. Advancements in chemotherapy and radiation have
significantly improved the cure rate.
6. What occurs during Disseminated Intravascular Coagulation (DIC)?
A. Primary failure of the bone marrow to produce platelets
B. Excessive systemic clotting followed by widespread hemorrhage
C. An isolated deficiency of Factor VIII in the plasma
D. Excessive production of red blood cells leading to stroke
Ans: B
Rationale: DIC is a complex acquired disorder involving paradoxical clotting and hemorrhage. It is
triggered by endothelial damage or the release of tissue factor. Extensive thrombin generation leads to
widespread microvascular thrombosis throughout the body. This process consumes platelets and clotting
factors, eventually leading to severe bleeding. It is often a secondary complication of sepsis, trauma, or
cancer. Treatment must prioritize the management of the underlying cause while providing supportive
care.
