WGU D236 OBJECTIVE ASSESSMENT
NEWEST 2026 ACTUAL EXAM| D236
PATHOPHYSIOLOGY OA EXAM WITH
COMPLETE 200 REAL EXAM QUESTIONS
AND CORRECT 100%VERIFIED
ANSWERS/ GUARANTEED PASS
(GRADED A+)
Question 1
A patient experiences prolonged tissue hypoxia following severe
blood loss. What is the earliest cellular change likely to occur?
A. Nuclear fragmentation
B. Increased ATP production
C. Anaerobic metabolism
D. Cell membrane rupture
Answer: C. Anaerobic metabolism
Rationale: When oxygen delivery is insufficient, cells switch
from aerobic to anaerobic metabolism, resulting in decreased
ATP production and lactic acid accumulation.
Question 2
Which electrolyte imbalance is most commonly associated with
untreated diabetic ketoacidosis (DKA)?
,A. Hypokalemia
B. Hypercalcemia
C. Hyperkalemia
D. Hypermagnesemia
Answer: C. Hyperkalemia
Rationale: Acidosis and insulin deficiency cause potassium to
shift from the intracellular to extracellular space, leading to
elevated serum potassium levels despite total body potassium
depletion.
Question 3
The primary function of aldosterone is to:
A. Increase potassium excretion and sodium retention
B. Promote glucose uptake
C. Stimulate erythropoiesis
D. Increase calcium absorption
Answer: A. Increase potassium excretion and sodium
retention
Rationale: Aldosterone acts on the distal nephron to retain
sodium and water while promoting potassium excretion, helping
regulate blood pressure and fluid balance.
Question 4
A patient with chronic hypertension develops left ventricular
hypertrophy. This adaptation is best classified as:
,A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C. Hypertrophy
Rationale: Cardiac muscle cells enlarge in response to
increased workload. Because cardiac cells have limited ability
to divide, hypertrophy occurs instead of hyperplasia.
Question 5
Which inflammatory mediator is most responsible for fever?
A. Histamine
B. Bradykinin
C. Prostaglandin E2
D. Complement
Answer: C. Prostaglandin E2
Rationale: Prostaglandin E2 acts on the hypothalamus to raise
the body's temperature set point, producing fever.
Question 6
A patient develops edema secondary to nephrotic syndrome.
What is the primary mechanism?
A. Increased hydrostatic pressure
B. Decreased plasma oncotic pressure
C. Lymphatic obstruction
D. Vasoconstriction
, Answer: B. Decreased plasma oncotic pressure
Rationale: Loss of albumin through the urine reduces plasma
oncotic pressure, allowing fluid to move into the interstitial
space and cause edema.
Question 7
Respiratory acidosis is characterized by:
A. Decreased carbon dioxide levels
B. Increased bicarbonate loss
C. Carbon dioxide retention
D. Excessive vomiting
Answer: C. Carbon dioxide retention
Rationale: Hypoventilation results in CO₂ accumulation,
increasing carbonic acid concentration and lowering blood pH.
Question 8
Which laboratory finding is most consistent with iron-deficiency
anemia?
A. Elevated MCV
B. Decreased MCV
C. Elevated hematocrit
D. Increased reticulocyte count
Answer: B. Decreased MCV
NEWEST 2026 ACTUAL EXAM| D236
PATHOPHYSIOLOGY OA EXAM WITH
COMPLETE 200 REAL EXAM QUESTIONS
AND CORRECT 100%VERIFIED
ANSWERS/ GUARANTEED PASS
(GRADED A+)
Question 1
A patient experiences prolonged tissue hypoxia following severe
blood loss. What is the earliest cellular change likely to occur?
A. Nuclear fragmentation
B. Increased ATP production
C. Anaerobic metabolism
D. Cell membrane rupture
Answer: C. Anaerobic metabolism
Rationale: When oxygen delivery is insufficient, cells switch
from aerobic to anaerobic metabolism, resulting in decreased
ATP production and lactic acid accumulation.
Question 2
Which electrolyte imbalance is most commonly associated with
untreated diabetic ketoacidosis (DKA)?
,A. Hypokalemia
B. Hypercalcemia
C. Hyperkalemia
D. Hypermagnesemia
Answer: C. Hyperkalemia
Rationale: Acidosis and insulin deficiency cause potassium to
shift from the intracellular to extracellular space, leading to
elevated serum potassium levels despite total body potassium
depletion.
Question 3
The primary function of aldosterone is to:
A. Increase potassium excretion and sodium retention
B. Promote glucose uptake
C. Stimulate erythropoiesis
D. Increase calcium absorption
Answer: A. Increase potassium excretion and sodium
retention
Rationale: Aldosterone acts on the distal nephron to retain
sodium and water while promoting potassium excretion, helping
regulate blood pressure and fluid balance.
Question 4
A patient with chronic hypertension develops left ventricular
hypertrophy. This adaptation is best classified as:
,A. Hyperplasia
B. Metaplasia
C. Hypertrophy
D. Dysplasia
Answer: C. Hypertrophy
Rationale: Cardiac muscle cells enlarge in response to
increased workload. Because cardiac cells have limited ability
to divide, hypertrophy occurs instead of hyperplasia.
Question 5
Which inflammatory mediator is most responsible for fever?
A. Histamine
B. Bradykinin
C. Prostaglandin E2
D. Complement
Answer: C. Prostaglandin E2
Rationale: Prostaglandin E2 acts on the hypothalamus to raise
the body's temperature set point, producing fever.
Question 6
A patient develops edema secondary to nephrotic syndrome.
What is the primary mechanism?
A. Increased hydrostatic pressure
B. Decreased plasma oncotic pressure
C. Lymphatic obstruction
D. Vasoconstriction
, Answer: B. Decreased plasma oncotic pressure
Rationale: Loss of albumin through the urine reduces plasma
oncotic pressure, allowing fluid to move into the interstitial
space and cause edema.
Question 7
Respiratory acidosis is characterized by:
A. Decreased carbon dioxide levels
B. Increased bicarbonate loss
C. Carbon dioxide retention
D. Excessive vomiting
Answer: C. Carbon dioxide retention
Rationale: Hypoventilation results in CO₂ accumulation,
increasing carbonic acid concentration and lowering blood pH.
Question 8
Which laboratory finding is most consistent with iron-deficiency
anemia?
A. Elevated MCV
B. Decreased MCV
C. Elevated hematocrit
D. Increased reticulocyte count
Answer: B. Decreased MCV
