Advanced Pathophysiology Multiple Choice
Questions (MCQs) with Answers and
Explanations for BSc and Master’s Degree
Exams
1. A patient with chronic hypertension develops concentric left ventricular hypertrophy.
Which cellular adaptation primarily accounts for this change?
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Hypertrophy
Explanation: Hypertrophy is characterized by an increase in cell size in response to increased
workload. In chronic hypertension, cardiac myocytes enlarge to compensate for increased
afterload.
2. A patient with severe acute pancreatitis develops widespread activation of clotting
pathways leading to multiorgan dysfunction. Which pathophysiological process is most
likely occurring?
A. Autoimmune hemolysis
B. Secondary polycythemia
C. Disseminated intravascular coagulation
D. Essential thrombocythemia
Explanation: Disseminated intravascular coagulation involves widespread coagulation
activation with consumption of clotting factors and platelets, resulting in thrombosis and
bleeding.
3. Which mechanism is primarily responsible for edema formation in nephrotic syndrome?
A. Increased capillary hydrostatic pressure
B. Lymphatic obstruction
, C. Increased plasma osmolarity
D. Reduced plasma oncotic pressure due to hypoalbuminemia
Explanation: Loss of albumin in the urine decreases plasma oncotic pressure, allowing fluid to
move into the interstitial space and causing edema.
4. A patient with chronic gastroesophageal reflux disease develops Barrett esophagus.
Which adaptive cellular process has occurred?
A. Hyperplasia
B. Atrophy
C. Metaplasia
D. Dysplasia
Explanation: Barrett esophagus results from replacement of stratified squamous epithelium by
columnar epithelium in response to chronic acid exposure, representing metaplasia.
5. During septic shock, which mediator contributes most significantly to systemic
vasodilation and hypotension?
A. Histamine
B. Bradykinin
C. Complement C3a
D. Nitric oxide
Explanation: Nitric oxide released during systemic inflammatory responses causes profound
vasodilation and contributes to hypotension in septic shock.
6. A patient develops respiratory acidosis secondary to chronic obstructive pulmonary
disease. Which compensatory mechanism is expected?
A. Increased bicarbonate excretion
B. Hyperventilation
C. Reduced hydrogen ion secretion
D. Renal retention of bicarbonate
Questions (MCQs) with Answers and
Explanations for BSc and Master’s Degree
Exams
1. A patient with chronic hypertension develops concentric left ventricular hypertrophy.
Which cellular adaptation primarily accounts for this change?
A. Hyperplasia
B. Metaplasia
C. Dysplasia
D. Hypertrophy
Explanation: Hypertrophy is characterized by an increase in cell size in response to increased
workload. In chronic hypertension, cardiac myocytes enlarge to compensate for increased
afterload.
2. A patient with severe acute pancreatitis develops widespread activation of clotting
pathways leading to multiorgan dysfunction. Which pathophysiological process is most
likely occurring?
A. Autoimmune hemolysis
B. Secondary polycythemia
C. Disseminated intravascular coagulation
D. Essential thrombocythemia
Explanation: Disseminated intravascular coagulation involves widespread coagulation
activation with consumption of clotting factors and platelets, resulting in thrombosis and
bleeding.
3. Which mechanism is primarily responsible for edema formation in nephrotic syndrome?
A. Increased capillary hydrostatic pressure
B. Lymphatic obstruction
, C. Increased plasma osmolarity
D. Reduced plasma oncotic pressure due to hypoalbuminemia
Explanation: Loss of albumin in the urine decreases plasma oncotic pressure, allowing fluid to
move into the interstitial space and causing edema.
4. A patient with chronic gastroesophageal reflux disease develops Barrett esophagus.
Which adaptive cellular process has occurred?
A. Hyperplasia
B. Atrophy
C. Metaplasia
D. Dysplasia
Explanation: Barrett esophagus results from replacement of stratified squamous epithelium by
columnar epithelium in response to chronic acid exposure, representing metaplasia.
5. During septic shock, which mediator contributes most significantly to systemic
vasodilation and hypotension?
A. Histamine
B. Bradykinin
C. Complement C3a
D. Nitric oxide
Explanation: Nitric oxide released during systemic inflammatory responses causes profound
vasodilation and contributes to hypotension in septic shock.
6. A patient develops respiratory acidosis secondary to chronic obstructive pulmonary
disease. Which compensatory mechanism is expected?
A. Increased bicarbonate excretion
B. Hyperventilation
C. Reduced hydrogen ion secretion
D. Renal retention of bicarbonate
