1
NR 603 CEA Exam & Practice Exam NEWEST
2025/2026 Actual Exam – Complete Real Exam
Questions | 100% Verified | Graded A+ Detailed
Rationales – Pass Guaranteed – A+ Graded
[SECTION 1: Advanced Pathophysiology — Questions 1-80]
Q1: A patient with chronic hypoxia due to COPD develops an increase in red blood cell mass.
This cellular adaptation is best described as:
A. Atrophy
C. Hyperplasia
D. Dysplasia
Correct Answer: C
Rationale: Hyperplasia is an increase in the number of cells in an organ or tissue. In response to
chronic hypoxia, the kidneys secrete more erythropoietin, stimulating the bone marrow to
produce more red blood cells (polycythemia) to improve oxygen transport. Atrophy (A) is a
decrease in cell size. Hypertrophy (B) is an increase in cell size. Dysplasia (D) is disordered cell
growth.
Q2: Which type of necrosis is characterized by the digestion of dead tissue by bacterial enzymes,
resulting in a liquid, cream-colored discharge?
A. Coagulative necrosis
B. Caseous necrosis
C. Liquefactive necrosis
D. Fat necrosis
Correct Answer: C
Rationale: Liquefactive necrosis typically occurs in the central nervous system due to bacterial
infection or ischemia. The dead tissue is digested by enzymes, leaving a liquid cystic space.
,2
Coagulative necrosis (A) is seen in hypoxic injury (e.g., heart) where tissue architecture is
preserved. Caseous necrosis (B) is seen in TB (cheese-like). Fat necrosis (D) occurs in the
breast/pancreas.
Q3: A cell accumulates pigments such as lipofuscin and wears down as part of the normal aging
process. This is an example of:
A. Pathologic atrophy
C. Physiologic atrophy
D. Hypertrophy
Correct Answer: C
Rationale: The accumulation of lipofuscin and cellular debris is a normal consequence of aging
and "wear and tear" on lysosomes, known as "brown atrophy." It is a non-pathologic reduction in
cell function/size. Pathologic atrophy (A) results from disease (e.g., denervation). Hypertrophy
(D) is an increase in size.
Q4: A patient presents with severe pain and pallor in their fingers and toes upon exposure to cold.
The pathophysiologic mechanism involves:
A. Arterial vasodilation
C. Arterial vasospasm
D. Venous insufficiency
Correct Answer: C
Rationale: Raynaud's phenomenon is caused by episodic vasospasm of the small arteries and
arterioles supplying the fingers and toes. This spasm reduces blood flow, causing pallor (white)
followed by cyanosis (blue) and rubor (red). Vasodilation (A) would increase blood flow. Venous
insufficiency (D) causes chronic swelling/edema.
Q5: In the stages of inflammation, which cell type is the first to arrive at the site of injury during
the acute phase?
A. Macrophages
,3
B. Lymphocytes
C. Neutrophils
D. Basophils
Correct Answer: C
Rationale: Neutrophils are the primary responders in acute inflammation. They arrive within 6-
24 hours to phagocytose bacteria and debris via chemotaxis. Macrophages (A) arrive later (48-72
hours) to clean up debris and initiate healing. Lymphocytes (B) are associated with chronic
inflammation.
Q6: Which type of hypersensitivity reaction is mediated by IgE antibodies and includes
anaphylaxis?
A. Type II
B. Type III
C. Type I
D. Type IV
Correct Answer: C
Rationale: Type I hypersensitivity is immediate (minutes) and mediated by IgE bound to mast
cells and basophils. Antigen binding triggers degranulation releasing histamine and leukotrienes.
It causes anaphylaxis, allergic rhinitis, and asthma. Type II (A) is cytotoxic (IgG/IgM). Type III
(B) is immune complex (IgG). Type IV (D) is delayed (T-cell mediated).
Q7: A patient with a history of rheumatoid arthritis (RA) presents with lung complications. The
pathophysiology of RA involves:
A. Type III hypersensitivity only
C. Autoimmune destruction of synovial membrane
D. Bacterial infection of joints
Correct Answer: C
, 4
Rationale: RA is an autoimmune disease primarily affecting the joints, characterized by the
immune system attacking the synovial membrane (Type IV hypersensitivity with autoantibodies
like RF and anti-CCP). This leads to pannus formation and joint erosion. It can cause extra-
articular manifestations like lung fibrosis. It is not caused by bacteria (D).
Q8: The nurse practitioner understands that in compensated metabolic acidosis, the expected
primary physiologic response is:
A. Hypoventilation
C. Hyperventilation (Kussmaul respirations)
D. Decreased respiratory rate
Correct Answer: C
Rationale: In metabolic acidosis (low pH, low HCO3), the lungs compensate by blowing off
CO2 (an acid) to raise the pH. This presents as hyperventilation, known as Kussmaul respirations
in severe cases like DKA. Hypoventilation (A) would lower pH further (respiratory acidosis).
Q9: A patient has a serum sodium level of 125 mEq/L (hyponatremia). The patient appears
euvolemic. The most likely cause is:
A. Heart failure
C. SIADH (Syndrome of Inappropriate Antidiuretic Hormone)
D. Diuretic use
Correct Answer: C
Rationale: Euvolemic hyponatremia is the hallmark of SIADH, where excess ADH causes water
retention relative to sodium, diluting the serum. Heart failure (A) causes hypervolemic
hyponatremia. Diuretic use (D) causes hypovolemic hyponatremia.
Q10: Which cellular adaptation involves a change from one type of mature cell to another, often
in response to chronic irritation?
A. Hyperplasia
NR 603 CEA Exam & Practice Exam NEWEST
2025/2026 Actual Exam – Complete Real Exam
Questions | 100% Verified | Graded A+ Detailed
Rationales – Pass Guaranteed – A+ Graded
[SECTION 1: Advanced Pathophysiology — Questions 1-80]
Q1: A patient with chronic hypoxia due to COPD develops an increase in red blood cell mass.
This cellular adaptation is best described as:
A. Atrophy
C. Hyperplasia
D. Dysplasia
Correct Answer: C
Rationale: Hyperplasia is an increase in the number of cells in an organ or tissue. In response to
chronic hypoxia, the kidneys secrete more erythropoietin, stimulating the bone marrow to
produce more red blood cells (polycythemia) to improve oxygen transport. Atrophy (A) is a
decrease in cell size. Hypertrophy (B) is an increase in cell size. Dysplasia (D) is disordered cell
growth.
Q2: Which type of necrosis is characterized by the digestion of dead tissue by bacterial enzymes,
resulting in a liquid, cream-colored discharge?
A. Coagulative necrosis
B. Caseous necrosis
C. Liquefactive necrosis
D. Fat necrosis
Correct Answer: C
Rationale: Liquefactive necrosis typically occurs in the central nervous system due to bacterial
infection or ischemia. The dead tissue is digested by enzymes, leaving a liquid cystic space.
,2
Coagulative necrosis (A) is seen in hypoxic injury (e.g., heart) where tissue architecture is
preserved. Caseous necrosis (B) is seen in TB (cheese-like). Fat necrosis (D) occurs in the
breast/pancreas.
Q3: A cell accumulates pigments such as lipofuscin and wears down as part of the normal aging
process. This is an example of:
A. Pathologic atrophy
C. Physiologic atrophy
D. Hypertrophy
Correct Answer: C
Rationale: The accumulation of lipofuscin and cellular debris is a normal consequence of aging
and "wear and tear" on lysosomes, known as "brown atrophy." It is a non-pathologic reduction in
cell function/size. Pathologic atrophy (A) results from disease (e.g., denervation). Hypertrophy
(D) is an increase in size.
Q4: A patient presents with severe pain and pallor in their fingers and toes upon exposure to cold.
The pathophysiologic mechanism involves:
A. Arterial vasodilation
C. Arterial vasospasm
D. Venous insufficiency
Correct Answer: C
Rationale: Raynaud's phenomenon is caused by episodic vasospasm of the small arteries and
arterioles supplying the fingers and toes. This spasm reduces blood flow, causing pallor (white)
followed by cyanosis (blue) and rubor (red). Vasodilation (A) would increase blood flow. Venous
insufficiency (D) causes chronic swelling/edema.
Q5: In the stages of inflammation, which cell type is the first to arrive at the site of injury during
the acute phase?
A. Macrophages
,3
B. Lymphocytes
C. Neutrophils
D. Basophils
Correct Answer: C
Rationale: Neutrophils are the primary responders in acute inflammation. They arrive within 6-
24 hours to phagocytose bacteria and debris via chemotaxis. Macrophages (A) arrive later (48-72
hours) to clean up debris and initiate healing. Lymphocytes (B) are associated with chronic
inflammation.
Q6: Which type of hypersensitivity reaction is mediated by IgE antibodies and includes
anaphylaxis?
A. Type II
B. Type III
C. Type I
D. Type IV
Correct Answer: C
Rationale: Type I hypersensitivity is immediate (minutes) and mediated by IgE bound to mast
cells and basophils. Antigen binding triggers degranulation releasing histamine and leukotrienes.
It causes anaphylaxis, allergic rhinitis, and asthma. Type II (A) is cytotoxic (IgG/IgM). Type III
(B) is immune complex (IgG). Type IV (D) is delayed (T-cell mediated).
Q7: A patient with a history of rheumatoid arthritis (RA) presents with lung complications. The
pathophysiology of RA involves:
A. Type III hypersensitivity only
C. Autoimmune destruction of synovial membrane
D. Bacterial infection of joints
Correct Answer: C
, 4
Rationale: RA is an autoimmune disease primarily affecting the joints, characterized by the
immune system attacking the synovial membrane (Type IV hypersensitivity with autoantibodies
like RF and anti-CCP). This leads to pannus formation and joint erosion. It can cause extra-
articular manifestations like lung fibrosis. It is not caused by bacteria (D).
Q8: The nurse practitioner understands that in compensated metabolic acidosis, the expected
primary physiologic response is:
A. Hypoventilation
C. Hyperventilation (Kussmaul respirations)
D. Decreased respiratory rate
Correct Answer: C
Rationale: In metabolic acidosis (low pH, low HCO3), the lungs compensate by blowing off
CO2 (an acid) to raise the pH. This presents as hyperventilation, known as Kussmaul respirations
in severe cases like DKA. Hypoventilation (A) would lower pH further (respiratory acidosis).
Q9: A patient has a serum sodium level of 125 mEq/L (hyponatremia). The patient appears
euvolemic. The most likely cause is:
A. Heart failure
C. SIADH (Syndrome of Inappropriate Antidiuretic Hormone)
D. Diuretic use
Correct Answer: C
Rationale: Euvolemic hyponatremia is the hallmark of SIADH, where excess ADH causes water
retention relative to sodium, diluting the serum. Heart failure (A) causes hypervolemic
hyponatremia. Diuretic use (D) causes hypovolemic hyponatremia.
Q10: Which cellular adaptation involves a change from one type of mature cell to another, often
in response to chronic irritation?
A. Hyperplasia
