SOUTH COLLEGE NSG 5140 ADVANCED
PATHOPHYSIOLOGY FINAL EXAM: 3 VERSIONS
WITH ANSWERS AND DETAILED EXPLANATIONS
| INSTANT PDF DOWNLOAD
1. A 66-year-old patient presents with worsening dyspnea, orthopnea, and
bilateral crackles; which underlying mechanism best explains these findings in
left-sided heart failure?
A. Increased systemic vascular resistance
B. Decreased preload
C. Pulmonary venous congestion leading to fluid accumulation in alveoli
D. Increased oxygen diffusion
Answer: C
Explanation: Left-sided heart failure causes blood to back up into pulmonary circulation,
increasing hydrostatic pressure and leading to pulmonary edema.
2. A patient with long-standing hypertension develops left ventricular
hypertrophy; what is the primary compensatory mechanism responsible for this
structural cardiac change?
A. Decreased afterload
B. Increased myocardial wall stress leading to muscle thickening
C. Reduced cardiac output
D. Increased venous return
Answer: B
Explanation: Chronic pressure overload causes the myocardium to thicken to overcome
increased resistance, leading to hypertrophy.
3. A patient presents with metabolic acidosis; which respiratory compensation is
expected to help restore acid-base balance?
,A. Decreased respiratory rate causing CO₂ retention
B. Increased respiratory rate to eliminate carbon dioxide
C. Reduced oxygen saturation
D. Increased bicarbonate retention
Answer: B
Explanation: The lungs compensate by blowing off CO₂, reducing acidity and increasing pH.
4. Which pathophysiologic mechanism best explains hyperglycemia in type 2
diabetes mellitus?
A. Autoimmune destruction of pancreatic beta cells
B. Increased insulin secretion
C. Peripheral insulin resistance leading to decreased glucose uptake
D. Increased glucagon suppression
Answer: C
Explanation: Insulin resistance prevents glucose from entering cells, causing elevated blood
glucose levels.
5. A patient with COPD presents with chronic hypercapnia; what is the
underlying reason for carbon dioxide retention in this condition?
A. Increased oxygen diffusion
B. Decreased airway resistance
C. Alveolar hypoventilation and impaired gas exchange
D. Increased hemoglobin binding
Answer: C
Explanation: COPD leads to air trapping and impaired ventilation, resulting in CO₂ retention.
6. Which mechanism is primarily responsible for edema formation in right-sided
heart failure?
A. Increased pulmonary capillary pressure
B. Elevated systemic venous pressure causing fluid leakage into tissues
C. Decreased lymphatic drainage
D. Increased arterial pressure
,Answer: B
Explanation: Blood backs up into systemic circulation, increasing venous pressure and causing
peripheral edema.
7. A patient with suspected pulmonary embolism presents with sudden dyspnea
and tachycardia; what is the primary pathophysiologic disturbance?
A. Decreased cardiac preload
B. Ventilation-perfusion mismatch due to blocked pulmonary artery
C. Increased alveolar ventilation
D. Decreased oxygen consumption
Answer: B
Explanation: A clot blocks blood flow, preventing proper gas exchange.
8. In diabetic ketoacidosis, what mechanism leads to metabolic acidosis?
A. Increased insulin activity
B. Excessive ketone production due to fat breakdown
C. Decreased glucose production
D. Increased bicarbonate levels
Answer: B
Explanation: Lack of insulin leads to fat metabolism, producing acidic ketones.
9. Which finding is most indicative of increased intracranial pressure in a late-
stage patient?
A. Tachycardia
B. Hypotension
C. Bradycardia with hypertension and irregular respirations
D. Hyperthermia
Answer: C
Explanation: This is Cushing’s triad, a late and life-threatening sign.
, 10. A patient with osteopenia is at increased risk for fractures due to which
underlying mechanism?
A. Increased bone formation
B. Decreased bone mineral density leading to structural weakness
C. Increased calcium absorption
D. Increased osteoblast activity
Answer: B
Explanation: Bone becomes fragile due to reduced mineral content.
11. A patient with sepsis develops hypotension despite adequate fluid
resuscitation; what mechanism explains this persistent hypotension?
A. Increased blood volume
B. Systemic vasodilation caused by inflammatory mediators
C. Decreased cardiac output
D. Increased vascular resistance
Answer: B
Explanation: Sepsis causes vasodilation and capillary leak, lowering blood pressure.
12. A patient with chronic kidney disease develops anemia; what is the primary
cause of this complication?
A. Increased RBC destruction
B. Decreased erythropoietin production by the kidneys
C. Increased iron loss
D. Bone marrow suppression
Answer: B
Explanation: Kidneys produce erythropoietin, which stimulates RBC production.
13. Which mechanism explains the development of ascites in liver cirrhosis?
A. Increased oncotic pressure
B. Portal hypertension and decreased albumin production
C. Increased renal perfusion
D. Increased lymphatic flow
PATHOPHYSIOLOGY FINAL EXAM: 3 VERSIONS
WITH ANSWERS AND DETAILED EXPLANATIONS
| INSTANT PDF DOWNLOAD
1. A 66-year-old patient presents with worsening dyspnea, orthopnea, and
bilateral crackles; which underlying mechanism best explains these findings in
left-sided heart failure?
A. Increased systemic vascular resistance
B. Decreased preload
C. Pulmonary venous congestion leading to fluid accumulation in alveoli
D. Increased oxygen diffusion
Answer: C
Explanation: Left-sided heart failure causes blood to back up into pulmonary circulation,
increasing hydrostatic pressure and leading to pulmonary edema.
2. A patient with long-standing hypertension develops left ventricular
hypertrophy; what is the primary compensatory mechanism responsible for this
structural cardiac change?
A. Decreased afterload
B. Increased myocardial wall stress leading to muscle thickening
C. Reduced cardiac output
D. Increased venous return
Answer: B
Explanation: Chronic pressure overload causes the myocardium to thicken to overcome
increased resistance, leading to hypertrophy.
3. A patient presents with metabolic acidosis; which respiratory compensation is
expected to help restore acid-base balance?
,A. Decreased respiratory rate causing CO₂ retention
B. Increased respiratory rate to eliminate carbon dioxide
C. Reduced oxygen saturation
D. Increased bicarbonate retention
Answer: B
Explanation: The lungs compensate by blowing off CO₂, reducing acidity and increasing pH.
4. Which pathophysiologic mechanism best explains hyperglycemia in type 2
diabetes mellitus?
A. Autoimmune destruction of pancreatic beta cells
B. Increased insulin secretion
C. Peripheral insulin resistance leading to decreased glucose uptake
D. Increased glucagon suppression
Answer: C
Explanation: Insulin resistance prevents glucose from entering cells, causing elevated blood
glucose levels.
5. A patient with COPD presents with chronic hypercapnia; what is the
underlying reason for carbon dioxide retention in this condition?
A. Increased oxygen diffusion
B. Decreased airway resistance
C. Alveolar hypoventilation and impaired gas exchange
D. Increased hemoglobin binding
Answer: C
Explanation: COPD leads to air trapping and impaired ventilation, resulting in CO₂ retention.
6. Which mechanism is primarily responsible for edema formation in right-sided
heart failure?
A. Increased pulmonary capillary pressure
B. Elevated systemic venous pressure causing fluid leakage into tissues
C. Decreased lymphatic drainage
D. Increased arterial pressure
,Answer: B
Explanation: Blood backs up into systemic circulation, increasing venous pressure and causing
peripheral edema.
7. A patient with suspected pulmonary embolism presents with sudden dyspnea
and tachycardia; what is the primary pathophysiologic disturbance?
A. Decreased cardiac preload
B. Ventilation-perfusion mismatch due to blocked pulmonary artery
C. Increased alveolar ventilation
D. Decreased oxygen consumption
Answer: B
Explanation: A clot blocks blood flow, preventing proper gas exchange.
8. In diabetic ketoacidosis, what mechanism leads to metabolic acidosis?
A. Increased insulin activity
B. Excessive ketone production due to fat breakdown
C. Decreased glucose production
D. Increased bicarbonate levels
Answer: B
Explanation: Lack of insulin leads to fat metabolism, producing acidic ketones.
9. Which finding is most indicative of increased intracranial pressure in a late-
stage patient?
A. Tachycardia
B. Hypotension
C. Bradycardia with hypertension and irregular respirations
D. Hyperthermia
Answer: C
Explanation: This is Cushing’s triad, a late and life-threatening sign.
, 10. A patient with osteopenia is at increased risk for fractures due to which
underlying mechanism?
A. Increased bone formation
B. Decreased bone mineral density leading to structural weakness
C. Increased calcium absorption
D. Increased osteoblast activity
Answer: B
Explanation: Bone becomes fragile due to reduced mineral content.
11. A patient with sepsis develops hypotension despite adequate fluid
resuscitation; what mechanism explains this persistent hypotension?
A. Increased blood volume
B. Systemic vasodilation caused by inflammatory mediators
C. Decreased cardiac output
D. Increased vascular resistance
Answer: B
Explanation: Sepsis causes vasodilation and capillary leak, lowering blood pressure.
12. A patient with chronic kidney disease develops anemia; what is the primary
cause of this complication?
A. Increased RBC destruction
B. Decreased erythropoietin production by the kidneys
C. Increased iron loss
D. Bone marrow suppression
Answer: B
Explanation: Kidneys produce erythropoietin, which stimulates RBC production.
13. Which mechanism explains the development of ascites in liver cirrhosis?
A. Increased oncotic pressure
B. Portal hypertension and decreased albumin production
C. Increased renal perfusion
D. Increased lymphatic flow
