2026 GRADED A+ UPDATED FOR 2026/2027
WGU D115 OA Advanced Pathophysiology Exam ALL QUESTIONS
AND 100% CORRECT ANSWERS ALREADY GRADED A+ - LATEST UPDATE
2026/2027 3 VERSIONS
Advanced Pathophysiology Practice Exam –
1. Which compensatory mechanism occurs first in acute heart failure?
A. Ventricular hypertrophy
B. Activation of RAAS
C. Tachycardia
D. Peripheral edema
Answer: C
Rationale: Tachycardia is the immediate response to maintain cardiac output in acute HF.
2. In acute kidney injury, oliguria is defined as:
A. <400 mL/day
B. <1,000 mL/day
C. >2,000 mL/day
D. >3,000 mL/day
Answer: A
Rationale: Oliguria indicates reduced glomerular filtration and impaired renal function.
3. Which acid-base disorder is commonly associated with vomiting?
A. Metabolic acidosis
B. Metabolic alkalosis
C. Respiratory acidosis
D. Respiratory alkalosis
Answer: B
Rationale: Loss of gastric acid leads to metabolic alkalosis.
4. A hallmark of nephrotic syndrome is:
,2026 GRADED A+ UPDATED FOR 2026/2027
A. Hematuria
B. Proteinuria >3.5 g/day
C. Polyuria
D. Hypernatremia
Answer: B
Rationale: Proteinuria causes hypoalbuminemia and edema.
5. In cirrhosis, portal hypertension causes:
A. Ascites and varices
B. Hypertension only
C. Polyuria
D. Hyperglycemia
Answer: A
Rationale: Increased portal pressure leads to fluid accumulation and venous dilation.
6. Hyperosmolar hyperglycemic state (HHS) is characterized by:
A. Severe hyperglycemia without significant ketosis
B. Ketoacidosis
C. Hypoglycemia
D. Hyponatremia only
Answer: A
Rationale: HHS occurs in type 2 diabetes, with hyperglycemia and dehydration but minimal
ketones.
7. In chronic bronchitis, the main pathophysiologic change is:
A. Alveolar destruction
B. Excess mucus and airway inflammation
C. Pulmonary edema
D. Pleural effusion
Answer: B
Rationale: Chronic bronchitis causes airway obstruction from mucus and inflammation.
8. Which lab value indicates liver synthetic dysfunction?
,2026 GRADED A+ UPDATED FOR 2026/2027
A. Elevated ALT
B. Low albumin
C. Elevated bilirubin only
D. Normal AST
Answer: B
Rationale: Albumin reflects liver protein synthesis.
9. In hypovolemic shock, the primary problem is:
A. Pump failure
B. Low circulating volume
C. Vasodilation
D. Pulmonary embolism
Answer: B
Rationale: Loss of blood or fluids reduces perfusion and preload.
10. In emphysema, gas exchange is impaired due to:
A. Alveolar destruction
B. Bronchospasm only
C. Pleural effusion
D. Increased surfactant
Answer: A
Rationale: Alveolar walls are destroyed, reducing surface area for gas exchange.
11. A patient with hyperaldosteronism is at risk for:
A. Hyperkalemia
B. Hypokalemia
C. Hyponatremia
D. Hypotension
Answer: B
Rationale: Excess aldosterone increases sodium retention and potassium excretion.
12. In DKA, potassium levels initially:
, 2026 GRADED A+ UPDATED FOR 2026/2027
A. Increase due to acidosis
B. Decrease due to dehydration
C. Remain normal
D. Decrease due to insulin
Answer: A
Rationale: Acidosis shifts potassium out of cells, raising serum levels despite total body deficit.
13. The most common cause of ischemic stroke is:
A. Embolus
B. Thrombus from atherosclerosis
C. Hemorrhage
D. Infection
Answer: B
Rationale: Thrombotic occlusion from atherosclerotic plaques is most common.
14. A patient with Addison’s disease presents with:
A. Hyperpigmentation and hypotension
B. Weight gain and hypertension
C. Hyperglycemia only
D. Hypernatremia only
Answer: A
Rationale: Low cortisol stimulates ACTH and melanocyte production; sodium loss causes
hypotension.
15. Chronic inflammation is dominated by which cells?
A. Neutrophils
B. Macrophages and lymphocytes
C. Eosinophils only
D. Platelets
Answer: B
Rationale: Mononuclear cells mediate chronic inflammatory processes.
16. The pathophysiology of atherosclerosis begins with:
WGU D115 OA Advanced Pathophysiology Exam ALL QUESTIONS
AND 100% CORRECT ANSWERS ALREADY GRADED A+ - LATEST UPDATE
2026/2027 3 VERSIONS
Advanced Pathophysiology Practice Exam –
1. Which compensatory mechanism occurs first in acute heart failure?
A. Ventricular hypertrophy
B. Activation of RAAS
C. Tachycardia
D. Peripheral edema
Answer: C
Rationale: Tachycardia is the immediate response to maintain cardiac output in acute HF.
2. In acute kidney injury, oliguria is defined as:
A. <400 mL/day
B. <1,000 mL/day
C. >2,000 mL/day
D. >3,000 mL/day
Answer: A
Rationale: Oliguria indicates reduced glomerular filtration and impaired renal function.
3. Which acid-base disorder is commonly associated with vomiting?
A. Metabolic acidosis
B. Metabolic alkalosis
C. Respiratory acidosis
D. Respiratory alkalosis
Answer: B
Rationale: Loss of gastric acid leads to metabolic alkalosis.
4. A hallmark of nephrotic syndrome is:
,2026 GRADED A+ UPDATED FOR 2026/2027
A. Hematuria
B. Proteinuria >3.5 g/day
C. Polyuria
D. Hypernatremia
Answer: B
Rationale: Proteinuria causes hypoalbuminemia and edema.
5. In cirrhosis, portal hypertension causes:
A. Ascites and varices
B. Hypertension only
C. Polyuria
D. Hyperglycemia
Answer: A
Rationale: Increased portal pressure leads to fluid accumulation and venous dilation.
6. Hyperosmolar hyperglycemic state (HHS) is characterized by:
A. Severe hyperglycemia without significant ketosis
B. Ketoacidosis
C. Hypoglycemia
D. Hyponatremia only
Answer: A
Rationale: HHS occurs in type 2 diabetes, with hyperglycemia and dehydration but minimal
ketones.
7. In chronic bronchitis, the main pathophysiologic change is:
A. Alveolar destruction
B. Excess mucus and airway inflammation
C. Pulmonary edema
D. Pleural effusion
Answer: B
Rationale: Chronic bronchitis causes airway obstruction from mucus and inflammation.
8. Which lab value indicates liver synthetic dysfunction?
,2026 GRADED A+ UPDATED FOR 2026/2027
A. Elevated ALT
B. Low albumin
C. Elevated bilirubin only
D. Normal AST
Answer: B
Rationale: Albumin reflects liver protein synthesis.
9. In hypovolemic shock, the primary problem is:
A. Pump failure
B. Low circulating volume
C. Vasodilation
D. Pulmonary embolism
Answer: B
Rationale: Loss of blood or fluids reduces perfusion and preload.
10. In emphysema, gas exchange is impaired due to:
A. Alveolar destruction
B. Bronchospasm only
C. Pleural effusion
D. Increased surfactant
Answer: A
Rationale: Alveolar walls are destroyed, reducing surface area for gas exchange.
11. A patient with hyperaldosteronism is at risk for:
A. Hyperkalemia
B. Hypokalemia
C. Hyponatremia
D. Hypotension
Answer: B
Rationale: Excess aldosterone increases sodium retention and potassium excretion.
12. In DKA, potassium levels initially:
, 2026 GRADED A+ UPDATED FOR 2026/2027
A. Increase due to acidosis
B. Decrease due to dehydration
C. Remain normal
D. Decrease due to insulin
Answer: A
Rationale: Acidosis shifts potassium out of cells, raising serum levels despite total body deficit.
13. The most common cause of ischemic stroke is:
A. Embolus
B. Thrombus from atherosclerosis
C. Hemorrhage
D. Infection
Answer: B
Rationale: Thrombotic occlusion from atherosclerotic plaques is most common.
14. A patient with Addison’s disease presents with:
A. Hyperpigmentation and hypotension
B. Weight gain and hypertension
C. Hyperglycemia only
D. Hypernatremia only
Answer: A
Rationale: Low cortisol stimulates ACTH and melanocyte production; sodium loss causes
hypotension.
15. Chronic inflammation is dominated by which cells?
A. Neutrophils
B. Macrophages and lymphocytes
C. Eosinophils only
D. Platelets
Answer: B
Rationale: Mononuclear cells mediate chronic inflammatory processes.
16. The pathophysiology of atherosclerosis begins with:
