, NSG 530 EXAM 4
Advanced Pathophysiology
Wilkes University
100-Question Original Practice Examination
2026/2027 Edition
Hematology Pathophysiology
1. A 57-year-old adult has facial plethora, headaches, pruritus after warm showers, hematocrit
61%, and low serum erythropoietin. Which mechanism best explains this pattern?
A) Clonal myeloproliferation causing erythrocytosis independent of erythropoietin
B) Autoimmune destruction of circulating erythrocytes
C) Chronic hypoxemia driving secondary erythropoietin release
D) Iron sequestration caused by inflammatory hepcidin excess
Correct Answer: A) Clonal myeloproliferation causing erythrocytosis independent of erythropoietin
Rationale: Polycythemia vera is a clonal myeloproliferative neoplasm, commonly associated with JAK2 signaling,
that increases red-cell mass despite suppressed erythropoietin. Secondary erythrocytosis generally raises
erythropoietin, while hemolysis and anemia of inflammation do not produce this marked panmyeloproliferative
phenotype. The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic
mechanism rather than relying on a single isolated symptom.
2. Laboratory testing shows hemoglobin 8.9 g/dL, MCV 70 fL, low ferritin, low transferrin
saturation, and increased TIBC. Which diagnosis is most consistent?
A) Pernicious anemia
B) Iron deficiency anemia
C) Beta-thalassemia trait
D) Anemia of chronic inflammation
Correct Answer: B) Iron deficiency anemia
Rationale: Iron deficiency reduces available iron for heme synthesis, producing microcytic hypochromic cells with
depleted ferritin and compensatory elevation of iron-binding capacity. Inflammatory anemia usually has normal or
high ferritin with low TIBC; pernicious anemia is macrocytic, and thalassemia often preserves iron stores. The finding
is best interpreted by linking the clinical pattern to the underlying pathophysiologic mechanism rather than relying on
a single isolated symptom.
3. Neurologic paresthesias accompany macrocytosis, hypersegmented neutrophils, low vitamin
B12, and positive intrinsic-factor antibodies. What is the key pathophysiologic defect?
A) Defective alpha-globin chain synthesis
B) Reduced erythropoietin secretion from chronic kidney disease
C) Autoimmune loss of intrinsic factor causing impaired cobalamin absorption
D) Accelerated splenic destruction of spherocytes
NSG 530 Exam 4 | Practice Examination | 2026/2027 Edition Page 1
, Correct Answer: C) Autoimmune loss of intrinsic factor causing impaired cobalamin absorption
Rationale: Pernicious anemia results from autoimmune injury to gastric parietal cells and intrinsic-factor deficiency,
preventing normal ileal vitamin B12 absorption and impairing DNA synthesis and myelin maintenance. Kidney
disease produces a normocytic anemia, thalassemia causes microcytosis, and hereditary spherocytosis is a
membrane-defect hemolytic anemia. The finding is best interpreted by linking the clinical pattern to the underlying
pathophysiologic mechanism rather than relying on a single isolated symptom.
4. Following exposure to an oxidant medication, a patient with episodic jaundice develops bite
cells and Heinz bodies. Which abnormality is most likely?
A) Glucose-6-phosphate dehydrogenase deficiency
B) Pyruvate kinase excess
C) Von Willebrand factor deficiency
D) Factor VIII deficiency
Correct Answer: A) Glucose-6-phosphate dehydrogenase deficiency
Rationale: G6PD deficiency limits erythrocyte generation of reduced glutathione, making cells vulnerable to oxidative
injury and hemolysis after drugs, infection, or fava-bean exposure. Coagulation factor disorders cause bleeding
rather than oxidant-triggered red-cell injury, and pyruvate kinase deficiency has a different metabolic mechanism.
The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic mechanism rather
than relying on a single isolated symptom.
5. Hemoglobin electrophoresis in a patient with recurrent painful vaso-occlusive episodes shows
predominant HbS. Which event initiates the acute cellular distortion?
A) Deoxygenated HbS polymerizes within erythrocytes
B) Iron precipitates within mature erythrocytes
C) Fibrinogen is converted excessively to fibrin
D) Antibodies bind platelet glycoproteins
Correct Answer: A) Deoxygenated HbS polymerizes within erythrocytes
Rationale: In sickle cell disease, deoxygenation promotes HbS polymerization, distorting erythrocytes, damaging
membranes, increasing adhesion, and obstructing microvascular flow. The process is not primarily platelet immune
destruction, generalized coagulation activation, or iron precipitation; those mechanisms explain different hematologic
disorders. The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic mechanism
rather than relying on a single isolated symptom.
6. A child with severe microcytic anemia has normal iron stores, target cells, and a family history
of transfusion-dependent anemia. Which mechanism best fits beta-thalassemia major?
A) Acquired mutation increasing JAK2 signaling
B) Autoimmune destruction of intrinsic factor
C) Deficiency of platelet adhesion proteins
D) Marked reduction of beta-globin synthesis causing ineffective erythropoiesis
NSG 530 Exam 4 | Practice Examination | 2026/2027 Edition Page 2
, Correct Answer: D) Marked reduction of beta-globin synthesis causing ineffective erythropoiesis
Rationale: Beta-thalassemia results from reduced or absent beta-globin synthesis, causing chain imbalance,
ineffective erythropoiesis, hemolysis, marrow expansion, and severe anemia in major forms. Intrinsic-factor
deficiency causes macrocytic anemia, JAK2 activation causes myeloproliferation, and platelet adhesion defects
cause mucocutaneous bleeding. The finding is best interpreted by linking the clinical pattern to the underlying
pathophysiologic mechanism rather than relying on a single isolated symptom.
7. A patient develops petechiae and mucosal bleeding with isolated severe thrombocytopenia
after a viral illness; PT and aPTT are normal. Which process is most likely?
A) Immune-mediated platelet destruction in the spleen
B) Disseminated intravascular coagulation
C) Reduced erythropoietin production
D) Deficiency of vitamin K-dependent clotting factors
Correct Answer: A) Immune-mediated platelet destruction in the spleen
Rationale: Immune thrombocytopenia is characterized by antibody-mediated platelet clearance, commonly in the
spleen, with otherwise preserved coagulation-factor testing. Vitamin K deficiency prolongs PT, DIC consumes
platelets and factors with abnormal coagulation studies, and erythropoietin deficiency affects red cells rather than
platelets. The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic mechanism
rather than relying on a single isolated symptom.
8. Postoperative bleeding is accompanied by prolonged aPTT, normal PT, and a family history of
recurrent hemarthroses in males. Which defect is most likely?
A) Thrombocytopenia
B) Factor VII deficiency
C) Factor VIII deficiency
D) Excess plasminogen activator inhibitor
Correct Answer: C) Factor VIII deficiency
Rationale: Hemophilia A results from factor VIII deficiency and impairs the intrinsic coagulation pathway, producing
prolonged aPTT and deep-tissue or joint bleeding. Factor VII deficiency predominantly prolongs PT,
thrombocytopenia causes mucosal bleeding, and excess fibrinolysis inhibitor would favor thrombosis rather than
hemarthrosis. The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic
mechanism rather than relying on a single isolated symptom.
9. A patient with sepsis develops oozing from venipuncture sites, thrombocytopenia, prolonged
PT/aPTT, low fibrinogen, and markedly elevated D-dimer. What is occurring?
A) Isolated autoimmune platelet destruction
B) Systemic coagulation activation with consumption of platelets and clotting factors
C) Bone marrow suppression without coagulation activation
D) Selective factor VIII deficiency
NSG 530 Exam 4 | Practice Examination | 2026/2027 Edition Page 3
Advanced Pathophysiology
Wilkes University
100-Question Original Practice Examination
2026/2027 Edition
Hematology Pathophysiology
1. A 57-year-old adult has facial plethora, headaches, pruritus after warm showers, hematocrit
61%, and low serum erythropoietin. Which mechanism best explains this pattern?
A) Clonal myeloproliferation causing erythrocytosis independent of erythropoietin
B) Autoimmune destruction of circulating erythrocytes
C) Chronic hypoxemia driving secondary erythropoietin release
D) Iron sequestration caused by inflammatory hepcidin excess
Correct Answer: A) Clonal myeloproliferation causing erythrocytosis independent of erythropoietin
Rationale: Polycythemia vera is a clonal myeloproliferative neoplasm, commonly associated with JAK2 signaling,
that increases red-cell mass despite suppressed erythropoietin. Secondary erythrocytosis generally raises
erythropoietin, while hemolysis and anemia of inflammation do not produce this marked panmyeloproliferative
phenotype. The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic
mechanism rather than relying on a single isolated symptom.
2. Laboratory testing shows hemoglobin 8.9 g/dL, MCV 70 fL, low ferritin, low transferrin
saturation, and increased TIBC. Which diagnosis is most consistent?
A) Pernicious anemia
B) Iron deficiency anemia
C) Beta-thalassemia trait
D) Anemia of chronic inflammation
Correct Answer: B) Iron deficiency anemia
Rationale: Iron deficiency reduces available iron for heme synthesis, producing microcytic hypochromic cells with
depleted ferritin and compensatory elevation of iron-binding capacity. Inflammatory anemia usually has normal or
high ferritin with low TIBC; pernicious anemia is macrocytic, and thalassemia often preserves iron stores. The finding
is best interpreted by linking the clinical pattern to the underlying pathophysiologic mechanism rather than relying on
a single isolated symptom.
3. Neurologic paresthesias accompany macrocytosis, hypersegmented neutrophils, low vitamin
B12, and positive intrinsic-factor antibodies. What is the key pathophysiologic defect?
A) Defective alpha-globin chain synthesis
B) Reduced erythropoietin secretion from chronic kidney disease
C) Autoimmune loss of intrinsic factor causing impaired cobalamin absorption
D) Accelerated splenic destruction of spherocytes
NSG 530 Exam 4 | Practice Examination | 2026/2027 Edition Page 1
, Correct Answer: C) Autoimmune loss of intrinsic factor causing impaired cobalamin absorption
Rationale: Pernicious anemia results from autoimmune injury to gastric parietal cells and intrinsic-factor deficiency,
preventing normal ileal vitamin B12 absorption and impairing DNA synthesis and myelin maintenance. Kidney
disease produces a normocytic anemia, thalassemia causes microcytosis, and hereditary spherocytosis is a
membrane-defect hemolytic anemia. The finding is best interpreted by linking the clinical pattern to the underlying
pathophysiologic mechanism rather than relying on a single isolated symptom.
4. Following exposure to an oxidant medication, a patient with episodic jaundice develops bite
cells and Heinz bodies. Which abnormality is most likely?
A) Glucose-6-phosphate dehydrogenase deficiency
B) Pyruvate kinase excess
C) Von Willebrand factor deficiency
D) Factor VIII deficiency
Correct Answer: A) Glucose-6-phosphate dehydrogenase deficiency
Rationale: G6PD deficiency limits erythrocyte generation of reduced glutathione, making cells vulnerable to oxidative
injury and hemolysis after drugs, infection, or fava-bean exposure. Coagulation factor disorders cause bleeding
rather than oxidant-triggered red-cell injury, and pyruvate kinase deficiency has a different metabolic mechanism.
The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic mechanism rather
than relying on a single isolated symptom.
5. Hemoglobin electrophoresis in a patient with recurrent painful vaso-occlusive episodes shows
predominant HbS. Which event initiates the acute cellular distortion?
A) Deoxygenated HbS polymerizes within erythrocytes
B) Iron precipitates within mature erythrocytes
C) Fibrinogen is converted excessively to fibrin
D) Antibodies bind platelet glycoproteins
Correct Answer: A) Deoxygenated HbS polymerizes within erythrocytes
Rationale: In sickle cell disease, deoxygenation promotes HbS polymerization, distorting erythrocytes, damaging
membranes, increasing adhesion, and obstructing microvascular flow. The process is not primarily platelet immune
destruction, generalized coagulation activation, or iron precipitation; those mechanisms explain different hematologic
disorders. The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic mechanism
rather than relying on a single isolated symptom.
6. A child with severe microcytic anemia has normal iron stores, target cells, and a family history
of transfusion-dependent anemia. Which mechanism best fits beta-thalassemia major?
A) Acquired mutation increasing JAK2 signaling
B) Autoimmune destruction of intrinsic factor
C) Deficiency of platelet adhesion proteins
D) Marked reduction of beta-globin synthesis causing ineffective erythropoiesis
NSG 530 Exam 4 | Practice Examination | 2026/2027 Edition Page 2
, Correct Answer: D) Marked reduction of beta-globin synthesis causing ineffective erythropoiesis
Rationale: Beta-thalassemia results from reduced or absent beta-globin synthesis, causing chain imbalance,
ineffective erythropoiesis, hemolysis, marrow expansion, and severe anemia in major forms. Intrinsic-factor
deficiency causes macrocytic anemia, JAK2 activation causes myeloproliferation, and platelet adhesion defects
cause mucocutaneous bleeding. The finding is best interpreted by linking the clinical pattern to the underlying
pathophysiologic mechanism rather than relying on a single isolated symptom.
7. A patient develops petechiae and mucosal bleeding with isolated severe thrombocytopenia
after a viral illness; PT and aPTT are normal. Which process is most likely?
A) Immune-mediated platelet destruction in the spleen
B) Disseminated intravascular coagulation
C) Reduced erythropoietin production
D) Deficiency of vitamin K-dependent clotting factors
Correct Answer: A) Immune-mediated platelet destruction in the spleen
Rationale: Immune thrombocytopenia is characterized by antibody-mediated platelet clearance, commonly in the
spleen, with otherwise preserved coagulation-factor testing. Vitamin K deficiency prolongs PT, DIC consumes
platelets and factors with abnormal coagulation studies, and erythropoietin deficiency affects red cells rather than
platelets. The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic mechanism
rather than relying on a single isolated symptom.
8. Postoperative bleeding is accompanied by prolonged aPTT, normal PT, and a family history of
recurrent hemarthroses in males. Which defect is most likely?
A) Thrombocytopenia
B) Factor VII deficiency
C) Factor VIII deficiency
D) Excess plasminogen activator inhibitor
Correct Answer: C) Factor VIII deficiency
Rationale: Hemophilia A results from factor VIII deficiency and impairs the intrinsic coagulation pathway, producing
prolonged aPTT and deep-tissue or joint bleeding. Factor VII deficiency predominantly prolongs PT,
thrombocytopenia causes mucosal bleeding, and excess fibrinolysis inhibitor would favor thrombosis rather than
hemarthrosis. The finding is best interpreted by linking the clinical pattern to the underlying pathophysiologic
mechanism rather than relying on a single isolated symptom.
9. A patient with sepsis develops oozing from venipuncture sites, thrombocytopenia, prolonged
PT/aPTT, low fibrinogen, and markedly elevated D-dimer. What is occurring?
A) Isolated autoimmune platelet destruction
B) Systemic coagulation activation with consumption of platelets and clotting factors
C) Bone marrow suppression without coagulation activation
D) Selective factor VIII deficiency
NSG 530 Exam 4 | Practice Examination | 2026/2027 Edition Page 3
