NUR555
Advanced Clinical Pathophysiology
Latest Exam Review
(With Solutions)
2026
1
,Multiple Choice Questions (MCQs)
A 55-year-old patient with chronic obstructive pulmonary disease (COPD)
presents with worsening cyanosis and increased sputum production.
Arterial blood gas reveals PaO2 of 55 mmHg, PaCO2 of 65 mmHg, and pH
of 7.30. Which acid-base imbalance is most likely present?
A) Respiratory alkalosis
B) Metabolic acidosis
C) Respiratory acidosis with metabolic compensation
D) Metabolic alkalosis
Answer: C
Rationale: Elevated PaCO2 and low pH indicate respiratory acidosis.
Compensatory mechanisms in chronic COPD partially correct pH but not
fully, so metabolic compensation is also present.
In a patient with congestive heart failure (CHF), elevated levels of brain
natriuretic peptide (BNP) indicate:
A) Liver dysfunction
B) Renal failure
C) Ventricular stretch and volume overload
D) Hypovolemia
Answer: C
Rationale: BNP is released by ventricles in response to stretch from
volume overload, commonly seen in CHF, making it a diagnostic and
prognostic marker.
Which cytokine primarily mediates systemic inflammatory response
syndrome (SIRS) in sepsis?
A) IL-10
B) TNF-alpha
C) IL-4
D) TGF-beta
Answer: B
Rationale: Tumor Necrosis Factor-alpha is the key pro-inflammatory
2
, cytokine driving the systemic inflammation typical in SIRS.
A patient with type 1 diabetes mellitus develops ketoacidosis. What is
the primary pathophysiologic process in this condition?
A) Increased insulin secretion
B) Lipolysis leading to ketone formation
C) Glycogen storage increase
D) Decreased gluconeogenesis
Answer: B
Rationale: Lack of insulin leads to lipolysis, releasing free fatty acids
converted to ketone bodies causing metabolic acidosis.
In chronic kidney disease, which metabolic disturbance contributes most
to renal osteodystrophy?
A) Hypercalcemia
B) Hypophosphatemia
C) Secondary hyperparathyroidism
D) Alkalosis
Answer: C
Rationale: Reduced phosphate excretion causes hyperphosphatemia,
stimulating parathyroid hormone release (secondary
hyperparathyroidism), which promotes bone demineralization.
True/False Questions
The presence of oligoclonal bands in cerebrospinal fluid suggests multiple
sclerosis due to autoimmune demyelination.
Answer: True
Rationale: Oligoclonal bands are immunoglobulins found in CSF indicative
of chronic inflammation seen in multiple sclerosis.
Elevated serum lactate levels always indicate tissue hypoxia.
Answer: False
Rationale: While high lactate often suggests hypoxia, it can also result
from impaired clearance in liver dysfunction or metabolic causes.
3
Advanced Clinical Pathophysiology
Latest Exam Review
(With Solutions)
2026
1
,Multiple Choice Questions (MCQs)
A 55-year-old patient with chronic obstructive pulmonary disease (COPD)
presents with worsening cyanosis and increased sputum production.
Arterial blood gas reveals PaO2 of 55 mmHg, PaCO2 of 65 mmHg, and pH
of 7.30. Which acid-base imbalance is most likely present?
A) Respiratory alkalosis
B) Metabolic acidosis
C) Respiratory acidosis with metabolic compensation
D) Metabolic alkalosis
Answer: C
Rationale: Elevated PaCO2 and low pH indicate respiratory acidosis.
Compensatory mechanisms in chronic COPD partially correct pH but not
fully, so metabolic compensation is also present.
In a patient with congestive heart failure (CHF), elevated levels of brain
natriuretic peptide (BNP) indicate:
A) Liver dysfunction
B) Renal failure
C) Ventricular stretch and volume overload
D) Hypovolemia
Answer: C
Rationale: BNP is released by ventricles in response to stretch from
volume overload, commonly seen in CHF, making it a diagnostic and
prognostic marker.
Which cytokine primarily mediates systemic inflammatory response
syndrome (SIRS) in sepsis?
A) IL-10
B) TNF-alpha
C) IL-4
D) TGF-beta
Answer: B
Rationale: Tumor Necrosis Factor-alpha is the key pro-inflammatory
2
, cytokine driving the systemic inflammation typical in SIRS.
A patient with type 1 diabetes mellitus develops ketoacidosis. What is
the primary pathophysiologic process in this condition?
A) Increased insulin secretion
B) Lipolysis leading to ketone formation
C) Glycogen storage increase
D) Decreased gluconeogenesis
Answer: B
Rationale: Lack of insulin leads to lipolysis, releasing free fatty acids
converted to ketone bodies causing metabolic acidosis.
In chronic kidney disease, which metabolic disturbance contributes most
to renal osteodystrophy?
A) Hypercalcemia
B) Hypophosphatemia
C) Secondary hyperparathyroidism
D) Alkalosis
Answer: C
Rationale: Reduced phosphate excretion causes hyperphosphatemia,
stimulating parathyroid hormone release (secondary
hyperparathyroidism), which promotes bone demineralization.
True/False Questions
The presence of oligoclonal bands in cerebrospinal fluid suggests multiple
sclerosis due to autoimmune demyelination.
Answer: True
Rationale: Oligoclonal bands are immunoglobulins found in CSF indicative
of chronic inflammation seen in multiple sclerosis.
Elevated serum lactate levels always indicate tissue hypoxia.
Answer: False
Rationale: While high lactate often suggests hypoxia, it can also result
from impaired clearance in liver dysfunction or metabolic causes.
3
