NURSING PATHOPHYSIOLOGY — EXAM 3
COMPLETE STUDY GUIDE QUESTIONS WITH
VERIFIED ANSWERS & DETAILED RATIONALES
2026/2027 UPDATE| BRAND NEW VERSION!!
1. A patient with severe iron-deficiency anemia is most likely to develop which alteration?
A. Increased oxygen-carrying capacity
B. Reduced oxygen delivery to tissues
C. Increased plasma oncotic pressure
D. Increased arterial oxygen saturation
Correct Answer: B. Reduced oxygen delivery to tissues
Rationale: Hemoglobin carries oxygen in the blood. Iron deficiency reduces hemoglobin
synthesis, decreasing the blood's oxygen-carrying capacity. Even when the lungs are functioning
normally, inadequate hemoglobin can reduce tissue oxygen delivery.
2. Which type of anemia results from inadequate vitamin B12 absorption caused by loss of
intrinsic factor?
A. Iron-deficiency anemia
B. Aplastic anemia
C. Pernicious anemia
D. Hemolytic anemia
Correct Answer: C. Pernicious anemia
Rationale: Pernicious anemia results from impaired vitamin B12 absorption, commonly because
of inadequate intrinsic factor. Vitamin B12 is required for normal DNA synthesis and erythrocyte
maturation.
3. A patient with sickle cell disease develops severe pain during a vaso-occlusive crisis. What
is the underlying mechanism?
A. Excessive platelet destruction
B. Sickled erythrocytes obstructing small blood vessels
C. Excessive production of normal erythrocytes
D. Increased plasma volume
,Correct Answer: B. Sickled erythrocytes obstructing small blood vessels
Rationale: Deoxygenated hemoglobin S can polymerize, causing erythrocytes to become rigid
and sickle-shaped. These cells can obstruct microcirculation, producing ischemia and severe
pain.
4. Which finding is most characteristic of hemolytic anemia?
A. Increased erythrocyte destruction
B. Decreased bilirubin production
C. Increased platelet production only
D. Increased iron absorption
Correct Answer: A. Increased erythrocyte destruction
Rationale: Hemolytic anemia occurs when red blood cells are destroyed faster than the bone
marrow can replace them. Increased erythrocyte destruction may increase bilirubin and
stimulate reticulocyte production.
5. What is the primary function of platelets?
A. Transport oxygen
B. Produce antibodies
C. Participate in primary hemostasis
D. Regulate blood glucose
Correct Answer: C. Participate in primary hemostasis
Rationale: Platelets adhere to damaged vascular surfaces, become activated, and aggregate to
form an initial platelet plug. This is an essential component of primary hemostasis.
6. A patient has a deficiency of clotting factor VIII. Which disorder is most likely?
A. Hemophilia A
B. Hemophilia B
C. Sickle cell disease
D. Disseminated intravascular coagulation
Correct Answer: A. Hemophilia A
,Rationale: Hemophilia A is associated with factor VIII deficiency. Hemophilia B involves factor IX
deficiency. Both can produce prolonged bleeding because of impaired coagulation.
7. Which condition is characterized by widespread activation of coagulation followed by
consumption of clotting factors and platelets?
A. Polycythemia
B. Disseminated intravascular coagulation
C. Iron-deficiency anemia
D. Leukopenia
Correct Answer: B. Disseminated intravascular coagulation
Rationale: DIC involves widespread coagulation activation with formation of microthrombi. As
platelets and clotting factors are consumed, the patient may subsequently develop serious
bleeding.
8. Which patient is at greatest risk for venous thromboembolism?
A. A patient who walks frequently
B. A patient with prolonged immobility after surgery
C. A patient with mild seasonal allergies
D. A patient with increased fluid intake
Correct Answer: B. A patient with prolonged immobility after surgery
Rationale: Venous stasis is a major contributor to thrombosis. Prolonged immobility decreases
the muscle-pump action that normally assists venous return, increasing the risk of deep-vein
thrombosis.
9. Atherosclerosis primarily involves:
A. Destruction of red blood cells
B. Lipid accumulation and inflammatory changes in arterial walls
C. Infection of cardiac valves
D. Excessive venous dilation
Correct Answer: B. Lipid accumulation and inflammatory changes in arterial walls
, Rationale: Atherosclerosis involves accumulation of lipids and inflammatory processes within
arterial walls, producing plaque formation and reduced arterial lumen diameter.
10. Which consequence can occur when an atherosclerotic plaque ruptures?
A. Thrombus formation
B. Increased oxygen delivery
C. Immediate erythrocyte production
D. Decreased platelet activation
Correct Answer: A. Thrombus formation
Rationale: Plaque rupture can expose thrombogenic material to circulating blood, activating
platelets and coagulation pathways. A thrombus may partially or completely obstruct blood
flow.
11. Stable angina is most commonly caused by:
A. Temporary myocardial ischemia
B. Permanent myocardial necrosis
C. Complete cardiac arrest
D. Severe pulmonary infection
Correct Answer: A. Temporary myocardial ischemia
Rationale: Angina occurs when myocardial oxygen demand exceeds oxygen supply. Stable
angina commonly occurs predictably with exertion and improves when oxygen demand
decreases.
12. Which finding is most directly associated with myocardial infarction?
A. Temporary reduction in myocardial oxygen demand
B. Myocardial cell death caused by prolonged ischemia
C. Increased coronary blood flow
D. Normal cardiac biomarkers throughout the event
Correct Answer: B. Myocardial cell death caused by prolonged ischemia
Rationale: A myocardial infarction results from prolonged inadequate coronary blood flow
causing ischemia and irreversible myocardial injury with cell death.
COMPLETE STUDY GUIDE QUESTIONS WITH
VERIFIED ANSWERS & DETAILED RATIONALES
2026/2027 UPDATE| BRAND NEW VERSION!!
1. A patient with severe iron-deficiency anemia is most likely to develop which alteration?
A. Increased oxygen-carrying capacity
B. Reduced oxygen delivery to tissues
C. Increased plasma oncotic pressure
D. Increased arterial oxygen saturation
Correct Answer: B. Reduced oxygen delivery to tissues
Rationale: Hemoglobin carries oxygen in the blood. Iron deficiency reduces hemoglobin
synthesis, decreasing the blood's oxygen-carrying capacity. Even when the lungs are functioning
normally, inadequate hemoglobin can reduce tissue oxygen delivery.
2. Which type of anemia results from inadequate vitamin B12 absorption caused by loss of
intrinsic factor?
A. Iron-deficiency anemia
B. Aplastic anemia
C. Pernicious anemia
D. Hemolytic anemia
Correct Answer: C. Pernicious anemia
Rationale: Pernicious anemia results from impaired vitamin B12 absorption, commonly because
of inadequate intrinsic factor. Vitamin B12 is required for normal DNA synthesis and erythrocyte
maturation.
3. A patient with sickle cell disease develops severe pain during a vaso-occlusive crisis. What
is the underlying mechanism?
A. Excessive platelet destruction
B. Sickled erythrocytes obstructing small blood vessels
C. Excessive production of normal erythrocytes
D. Increased plasma volume
,Correct Answer: B. Sickled erythrocytes obstructing small blood vessels
Rationale: Deoxygenated hemoglobin S can polymerize, causing erythrocytes to become rigid
and sickle-shaped. These cells can obstruct microcirculation, producing ischemia and severe
pain.
4. Which finding is most characteristic of hemolytic anemia?
A. Increased erythrocyte destruction
B. Decreased bilirubin production
C. Increased platelet production only
D. Increased iron absorption
Correct Answer: A. Increased erythrocyte destruction
Rationale: Hemolytic anemia occurs when red blood cells are destroyed faster than the bone
marrow can replace them. Increased erythrocyte destruction may increase bilirubin and
stimulate reticulocyte production.
5. What is the primary function of platelets?
A. Transport oxygen
B. Produce antibodies
C. Participate in primary hemostasis
D. Regulate blood glucose
Correct Answer: C. Participate in primary hemostasis
Rationale: Platelets adhere to damaged vascular surfaces, become activated, and aggregate to
form an initial platelet plug. This is an essential component of primary hemostasis.
6. A patient has a deficiency of clotting factor VIII. Which disorder is most likely?
A. Hemophilia A
B. Hemophilia B
C. Sickle cell disease
D. Disseminated intravascular coagulation
Correct Answer: A. Hemophilia A
,Rationale: Hemophilia A is associated with factor VIII deficiency. Hemophilia B involves factor IX
deficiency. Both can produce prolonged bleeding because of impaired coagulation.
7. Which condition is characterized by widespread activation of coagulation followed by
consumption of clotting factors and platelets?
A. Polycythemia
B. Disseminated intravascular coagulation
C. Iron-deficiency anemia
D. Leukopenia
Correct Answer: B. Disseminated intravascular coagulation
Rationale: DIC involves widespread coagulation activation with formation of microthrombi. As
platelets and clotting factors are consumed, the patient may subsequently develop serious
bleeding.
8. Which patient is at greatest risk for venous thromboembolism?
A. A patient who walks frequently
B. A patient with prolonged immobility after surgery
C. A patient with mild seasonal allergies
D. A patient with increased fluid intake
Correct Answer: B. A patient with prolonged immobility after surgery
Rationale: Venous stasis is a major contributor to thrombosis. Prolonged immobility decreases
the muscle-pump action that normally assists venous return, increasing the risk of deep-vein
thrombosis.
9. Atherosclerosis primarily involves:
A. Destruction of red blood cells
B. Lipid accumulation and inflammatory changes in arterial walls
C. Infection of cardiac valves
D. Excessive venous dilation
Correct Answer: B. Lipid accumulation and inflammatory changes in arterial walls
, Rationale: Atherosclerosis involves accumulation of lipids and inflammatory processes within
arterial walls, producing plaque formation and reduced arterial lumen diameter.
10. Which consequence can occur when an atherosclerotic plaque ruptures?
A. Thrombus formation
B. Increased oxygen delivery
C. Immediate erythrocyte production
D. Decreased platelet activation
Correct Answer: A. Thrombus formation
Rationale: Plaque rupture can expose thrombogenic material to circulating blood, activating
platelets and coagulation pathways. A thrombus may partially or completely obstruct blood
flow.
11. Stable angina is most commonly caused by:
A. Temporary myocardial ischemia
B. Permanent myocardial necrosis
C. Complete cardiac arrest
D. Severe pulmonary infection
Correct Answer: A. Temporary myocardial ischemia
Rationale: Angina occurs when myocardial oxygen demand exceeds oxygen supply. Stable
angina commonly occurs predictably with exertion and improves when oxygen demand
decreases.
12. Which finding is most directly associated with myocardial infarction?
A. Temporary reduction in myocardial oxygen demand
B. Myocardial cell death caused by prolonged ischemia
C. Increased coronary blood flow
D. Normal cardiac biomarkers throughout the event
Correct Answer: B. Myocardial cell death caused by prolonged ischemia
Rationale: A myocardial infarction results from prolonged inadequate coronary blood flow
causing ischemia and irreversible myocardial injury with cell death.
