LATEST WGU D236 PATHOPHYSIOLOGY OA EXAM / ACTUAL WGU D236
PATHOPHYSIOLOGY OBJECTIVE ASSESSMENT (OA) REAL EXAM 2026/2027 &
STUDY GUIDE ACCURATE TEST APPROVED QUESTIONS WITH WELL
ELABORATED ANSWERS AND DETAILED RATIONALES (100% CORRECT
VERIFIED SOLUTIONS) LATEST UPDATED VERSION 2026 EDITION
|GUARANTEED PASS A+ (BRAND NEW!) |FULL REVISED WGU D236
PATHOPHYSIOLOGY OA
1. A patient has sustained damage to their baroreceptors. Which
physiological change would most likely result from this injury?
A) Inability to regulate blood glucose levels
B) Impaired detection of changes in blood pressure
C) Loss of fine motor coordination
D) Decreased sensitivity to pain
CORRECT ANSWER: B) Impaired detection of changes in blood
pressure
Rationale: Baroreceptors are stretch-sensitive receptors located in
the carotid arteries and aortic arch that detect changes in blood
pressure. Damage impairs the autonomic reflex to maintain stable
BP.
2. In a patient with metabolic acidosis, which compensatory mechanism
would the nurse expect to observe?
A) Hypoventilation with increased PaCO2
B) Hyperventilation with decreased PaCO2
C) Decreased urinary excretion of hydrogen ions
,D) Increased reabsorption of bicarbonate in the intestines
CORRECT ANSWER: B) Hyperventilation with decreased PaCO2
Rationale: Metabolic acidosis triggers respiratory compensation via
increased rate and depth of breathing (Kussmaul respirations) to blow
off CO2, reducing PaCO2 and raising pH.
3. A patient with heart failure develops edema in the lower extremities.
This is most directly caused by:
A) Decreased capillary hydrostatic pressure
B) Increased plasma oncotic pressure
C) Increased capillary hydrostatic pressure
D) Decreased capillary permeability
CORRECT ANSWER: C) Increased capillary hydrostatic pressure
Rationale: Heart failure causes venous congestion and increased
capillary hydrostatic pressure, which forces fluid into interstitial
spaces, leading to dependent edema.
4. Which of the following best describes the pathophysiology of type 1
diabetes mellitus?
A) Insulin resistance with compensatory hyperinsulinemia
B) Autoimmune destruction of pancreatic beta cells
C) Increased glucagon secretion from alpha cells
D) Defective insulin receptors on target cells
,CORRECT ANSWER: B) Autoimmune destruction of pancreatic beta
cells
*Rationale: Type 1 diabetes results from T-cell-mediated autoimmune
attack on pancreatic beta cells, leading to absolute insulin deficiency.*
5. A patient with liver cirrhosis develops ascites. The primary
pathophysiological mechanism is:
A) Increased aldosterone secretion due to renal hypoperfusion
B) Decreased plasma colloid osmotic pressure from hypoalbuminemia
C) Obstruction of the hepatic vein causing backflow
D) Increased lymphatic flow from the thoracic duct
CORRECT ANSWER: B) Decreased plasma colloid osmotic pressure
from hypoalbuminemia
Rationale: Cirrhosis reduces albumin synthesis, lowering plasma
oncotic pressure, which allows fluid to leak into the peritoneal cavity.
Portal hypertension also contributes, but hypoalbuminemia is a
primary driver.
6. Which type of hypersensitivity reaction is responsible for systemic
lupus erythematosus (SLE)?
A) Type I (IgE-mediated)
B) Type II (antibody-mediated cytotoxic)
C) Type III (immune complex-mediated)
, D) Type IV (delayed-type cell-mediated)
CORRECT ANSWER: C) Type III (immune complex-mediated)
Rationale: SLE involves deposition of circulating immune complexes
(autoantibodies bound to nuclear antigens) in tissues, activating
complement and causing inflammation.
7. A patient is diagnosed with a stroke caused by a thrombus that formed
in the left atrial appendage due to atrial fibrillation. This type of stroke is
classified as:
A) Thrombotic stroke
B) Lacunar stroke
C) Embolic stroke
D) Hemorrhagic stroke
CORRECT ANSWER: C) Embolic stroke
Rationale: An embolic stroke results from a clot that forms elsewhere
(e.g., heart in atrial fibrillation) and travels to occlude a cerebral
artery, distinguishing it from a thrombotic stroke (clot forms locally).
8. In a patient with chronic obstructive pulmonary disease (COPD),
which acid-base imbalance is most common?
A) Metabolic acidosis
B) Metabolic alkalosis
C) Respiratory acidosis
PATHOPHYSIOLOGY OBJECTIVE ASSESSMENT (OA) REAL EXAM 2026/2027 &
STUDY GUIDE ACCURATE TEST APPROVED QUESTIONS WITH WELL
ELABORATED ANSWERS AND DETAILED RATIONALES (100% CORRECT
VERIFIED SOLUTIONS) LATEST UPDATED VERSION 2026 EDITION
|GUARANTEED PASS A+ (BRAND NEW!) |FULL REVISED WGU D236
PATHOPHYSIOLOGY OA
1. A patient has sustained damage to their baroreceptors. Which
physiological change would most likely result from this injury?
A) Inability to regulate blood glucose levels
B) Impaired detection of changes in blood pressure
C) Loss of fine motor coordination
D) Decreased sensitivity to pain
CORRECT ANSWER: B) Impaired detection of changes in blood
pressure
Rationale: Baroreceptors are stretch-sensitive receptors located in
the carotid arteries and aortic arch that detect changes in blood
pressure. Damage impairs the autonomic reflex to maintain stable
BP.
2. In a patient with metabolic acidosis, which compensatory mechanism
would the nurse expect to observe?
A) Hypoventilation with increased PaCO2
B) Hyperventilation with decreased PaCO2
C) Decreased urinary excretion of hydrogen ions
,D) Increased reabsorption of bicarbonate in the intestines
CORRECT ANSWER: B) Hyperventilation with decreased PaCO2
Rationale: Metabolic acidosis triggers respiratory compensation via
increased rate and depth of breathing (Kussmaul respirations) to blow
off CO2, reducing PaCO2 and raising pH.
3. A patient with heart failure develops edema in the lower extremities.
This is most directly caused by:
A) Decreased capillary hydrostatic pressure
B) Increased plasma oncotic pressure
C) Increased capillary hydrostatic pressure
D) Decreased capillary permeability
CORRECT ANSWER: C) Increased capillary hydrostatic pressure
Rationale: Heart failure causes venous congestion and increased
capillary hydrostatic pressure, which forces fluid into interstitial
spaces, leading to dependent edema.
4. Which of the following best describes the pathophysiology of type 1
diabetes mellitus?
A) Insulin resistance with compensatory hyperinsulinemia
B) Autoimmune destruction of pancreatic beta cells
C) Increased glucagon secretion from alpha cells
D) Defective insulin receptors on target cells
,CORRECT ANSWER: B) Autoimmune destruction of pancreatic beta
cells
*Rationale: Type 1 diabetes results from T-cell-mediated autoimmune
attack on pancreatic beta cells, leading to absolute insulin deficiency.*
5. A patient with liver cirrhosis develops ascites. The primary
pathophysiological mechanism is:
A) Increased aldosterone secretion due to renal hypoperfusion
B) Decreased plasma colloid osmotic pressure from hypoalbuminemia
C) Obstruction of the hepatic vein causing backflow
D) Increased lymphatic flow from the thoracic duct
CORRECT ANSWER: B) Decreased plasma colloid osmotic pressure
from hypoalbuminemia
Rationale: Cirrhosis reduces albumin synthesis, lowering plasma
oncotic pressure, which allows fluid to leak into the peritoneal cavity.
Portal hypertension also contributes, but hypoalbuminemia is a
primary driver.
6. Which type of hypersensitivity reaction is responsible for systemic
lupus erythematosus (SLE)?
A) Type I (IgE-mediated)
B) Type II (antibody-mediated cytotoxic)
C) Type III (immune complex-mediated)
, D) Type IV (delayed-type cell-mediated)
CORRECT ANSWER: C) Type III (immune complex-mediated)
Rationale: SLE involves deposition of circulating immune complexes
(autoantibodies bound to nuclear antigens) in tissues, activating
complement and causing inflammation.
7. A patient is diagnosed with a stroke caused by a thrombus that formed
in the left atrial appendage due to atrial fibrillation. This type of stroke is
classified as:
A) Thrombotic stroke
B) Lacunar stroke
C) Embolic stroke
D) Hemorrhagic stroke
CORRECT ANSWER: C) Embolic stroke
Rationale: An embolic stroke results from a clot that forms elsewhere
(e.g., heart in atrial fibrillation) and travels to occlude a cerebral
artery, distinguishing it from a thrombotic stroke (clot forms locally).
8. In a patient with chronic obstructive pulmonary disease (COPD),
which acid-base imbalance is most common?
A) Metabolic acidosis
B) Metabolic alkalosis
C) Respiratory acidosis
