NIGHTINGALE PATHOPHYSIOLOGY
EXAM |(LATEST UPDATE )
QUESTIONS & ANSWERS | 100% CORRECT
| GRADE A +
Question 1
A patient presents with polyuria, polydipsia, and polyphagia. Laboratory
tests reveal hyperglycemia and low insulin levels. The most likely
pathophysiology:
A. Type 1 diabetes mellitus due to autoimmune beta-cell destruction
B. Type 2 diabetes mellitus due to insulin resistance
C. Secondary diabetes due to steroid use
D. Gestational diabetes
Correct Answer: A
Rationale: Type 1 diabetes is characterized by autoimmune destruction of
pancreatic beta cells, leading to insulin deficiency.
Question 2
A patient develops sudden chest pain, dyspnea, and hypotension. ECG
shows ST-segment elevation. The underlying pathophysiology is:
A. Pulmonary embolism causing right ventricular strain
B. Acute myocardial infarction due to coronary artery occlusion
C. Pericarditis with inflammation of pericardium
D. Aortic dissection
Correct Answer: B
Rationale: ST-elevation MI results from acute ischemia caused by
coronary artery occlusion, leading to myocardial necrosis.
Question 3
A patient with chronic liver disease develops jaundice, ascites, and
coagulopathy. The primary pathophysiology involves:
,A. Hepatic congestion
B. Hepatocyte necrosis and impaired synthetic function
C. Biliary obstruction
D. Autoimmune hepatitis
Correct Answer: B
Rationale: Chronic liver disease impairs hepatocyte function, reducing
synthesis of clotting factors and albumin.
Question 4
A patient presents with tachycardia, hypotension, and warm, flushed skin
in sepsis. This is caused by:
A. Cardiogenic shock
B. Distributive shock due to vasodilation and capillary leak
C. Hypovolemic shock from dehydration
D. Obstructive shock from pulmonary embolism
Correct Answer: B
Rationale: Distributive shock (septic) results from systemic vasodilation
and increased capillary permeability.
Question 5
Which lab finding is consistent with diabetic ketoacidosis?
A. Hyperglycemia, low ketones, metabolic alkalosis
B. Hyperglycemia, high ketones, metabolic acidosis
C. Hypoglycemia, high ketones, metabolic acidosis
D. Hyperglycemia, low ketones, metabolic acidosis
Correct Answer: B
Rationale: DKA presents with hyperglycemia, ketone accumulation, and
metabolic acidosis.
,Question 6
A patient with chronic obstructive pulmonary disease (COPD) develops
hypoxemia and hypercapnia. The underlying mechanism is:
A. Decreased airway resistance
B. Ventilation-perfusion mismatch and impaired gas exchange
C. Increased tidal volume
D. Pulmonary embolism
Correct Answer: B
Rationale: COPD leads to V/Q mismatch due to airflow obstruction and
alveolar destruction.
Question 7
Which pathophysiology explains edema in heart failure?
A. Increased plasma oncotic pressure
B. Increased hydrostatic pressure in capillaries
C. Lymphatic obstruction
D. Hypoalbuminemia
Correct Answer: B
Rationale: Elevated venous pressure in heart failure increases capillary
hydrostatic pressure, promoting fluid extravasation.
Question 8
A patient presents with fatigue, pallor, and glossitis. Lab shows low
hemoglobin, low MCV. The most likely mechanism:
A. Iron deficiency anemia due to chronic blood loss
B. Megaloblastic anemia due to B12 deficiency
C. Hemolytic anemia due to RBC destruction
D. Aplastic anemia due to bone marrow failure
Correct Answer: A
Rationale: Microcytic anemia with low hemoglobin and iron deficiency is
commonly due to chronic blood loss.
, Question 9
A patient develops sudden severe headache, nausea, and left-sided
weakness. CT scan shows bleeding in the basal ganglia. The most likely
pathophysiology:
A. Ischemic stroke due to thrombus
B. Hemorrhagic stroke due to rupture of small penetrating arteries
C. Subarachnoid hemorrhage from aneurysm
D. Migraine with aura
Correct Answer: B
Rationale: Hypertensive hemorrhage often affects basal ganglia from
small vessel rupture.
Question 10
A patient presents with fever, malaise, and right upper quadrant pain.
Labs reveal elevated ALT, AST, and bilirubin. The underlying
pathophysiology:
A. Hepatocyte injury causing enzyme release
B. Bile duct obstruction only
C. Autoimmune destruction of hepatocytes
D. Viral infection without hepatocyte involvement
Correct Answer: A
Rationale: Hepatocellular injury releases intracellular enzymes into the
bloodstream.
Question 11
A patient has severe diarrhea and dehydration. Lab shows hypokalemia
and metabolic acidosis. Which pathophysiology explains this?
A. Renal failure causing retention of H+
B. Gastrointestinal loss of potassium and bicarbonate
C. Excess aldosterone
D. Respiratory alkalosis
EXAM |(LATEST UPDATE )
QUESTIONS & ANSWERS | 100% CORRECT
| GRADE A +
Question 1
A patient presents with polyuria, polydipsia, and polyphagia. Laboratory
tests reveal hyperglycemia and low insulin levels. The most likely
pathophysiology:
A. Type 1 diabetes mellitus due to autoimmune beta-cell destruction
B. Type 2 diabetes mellitus due to insulin resistance
C. Secondary diabetes due to steroid use
D. Gestational diabetes
Correct Answer: A
Rationale: Type 1 diabetes is characterized by autoimmune destruction of
pancreatic beta cells, leading to insulin deficiency.
Question 2
A patient develops sudden chest pain, dyspnea, and hypotension. ECG
shows ST-segment elevation. The underlying pathophysiology is:
A. Pulmonary embolism causing right ventricular strain
B. Acute myocardial infarction due to coronary artery occlusion
C. Pericarditis with inflammation of pericardium
D. Aortic dissection
Correct Answer: B
Rationale: ST-elevation MI results from acute ischemia caused by
coronary artery occlusion, leading to myocardial necrosis.
Question 3
A patient with chronic liver disease develops jaundice, ascites, and
coagulopathy. The primary pathophysiology involves:
,A. Hepatic congestion
B. Hepatocyte necrosis and impaired synthetic function
C. Biliary obstruction
D. Autoimmune hepatitis
Correct Answer: B
Rationale: Chronic liver disease impairs hepatocyte function, reducing
synthesis of clotting factors and albumin.
Question 4
A patient presents with tachycardia, hypotension, and warm, flushed skin
in sepsis. This is caused by:
A. Cardiogenic shock
B. Distributive shock due to vasodilation and capillary leak
C. Hypovolemic shock from dehydration
D. Obstructive shock from pulmonary embolism
Correct Answer: B
Rationale: Distributive shock (septic) results from systemic vasodilation
and increased capillary permeability.
Question 5
Which lab finding is consistent with diabetic ketoacidosis?
A. Hyperglycemia, low ketones, metabolic alkalosis
B. Hyperglycemia, high ketones, metabolic acidosis
C. Hypoglycemia, high ketones, metabolic acidosis
D. Hyperglycemia, low ketones, metabolic acidosis
Correct Answer: B
Rationale: DKA presents with hyperglycemia, ketone accumulation, and
metabolic acidosis.
,Question 6
A patient with chronic obstructive pulmonary disease (COPD) develops
hypoxemia and hypercapnia. The underlying mechanism is:
A. Decreased airway resistance
B. Ventilation-perfusion mismatch and impaired gas exchange
C. Increased tidal volume
D. Pulmonary embolism
Correct Answer: B
Rationale: COPD leads to V/Q mismatch due to airflow obstruction and
alveolar destruction.
Question 7
Which pathophysiology explains edema in heart failure?
A. Increased plasma oncotic pressure
B. Increased hydrostatic pressure in capillaries
C. Lymphatic obstruction
D. Hypoalbuminemia
Correct Answer: B
Rationale: Elevated venous pressure in heart failure increases capillary
hydrostatic pressure, promoting fluid extravasation.
Question 8
A patient presents with fatigue, pallor, and glossitis. Lab shows low
hemoglobin, low MCV. The most likely mechanism:
A. Iron deficiency anemia due to chronic blood loss
B. Megaloblastic anemia due to B12 deficiency
C. Hemolytic anemia due to RBC destruction
D. Aplastic anemia due to bone marrow failure
Correct Answer: A
Rationale: Microcytic anemia with low hemoglobin and iron deficiency is
commonly due to chronic blood loss.
, Question 9
A patient develops sudden severe headache, nausea, and left-sided
weakness. CT scan shows bleeding in the basal ganglia. The most likely
pathophysiology:
A. Ischemic stroke due to thrombus
B. Hemorrhagic stroke due to rupture of small penetrating arteries
C. Subarachnoid hemorrhage from aneurysm
D. Migraine with aura
Correct Answer: B
Rationale: Hypertensive hemorrhage often affects basal ganglia from
small vessel rupture.
Question 10
A patient presents with fever, malaise, and right upper quadrant pain.
Labs reveal elevated ALT, AST, and bilirubin. The underlying
pathophysiology:
A. Hepatocyte injury causing enzyme release
B. Bile duct obstruction only
C. Autoimmune destruction of hepatocytes
D. Viral infection without hepatocyte involvement
Correct Answer: A
Rationale: Hepatocellular injury releases intracellular enzymes into the
bloodstream.
Question 11
A patient has severe diarrhea and dehydration. Lab shows hypokalemia
and metabolic acidosis. Which pathophysiology explains this?
A. Renal failure causing retention of H+
B. Gastrointestinal loss of potassium and bicarbonate
C. Excess aldosterone
D. Respiratory alkalosis
