,1. A patient with nephrotic syndrome asks, "What causes my urine to be so full of protein?"
Which response is most accurate?
A) "Your kidneys are not filtering blood properly due to an infection."
B) "The glomerular membrane has increased permeability."
C) "Your liver is producing too much protein."
D) "Your renal tubules are secreting protein into the urine."
Correct Answer: The glomerular membrane has increased permeability.
Rationale: Nephrotic syndrome is characterized by damage to the glomerular filtration barrier,
making it more permeable to large molecules like albumin . This increased permeability allows
protein to leak from the blood into the urine (proteinuria), leading to hypoalbuminemia and
subsequent edema .
2. The pathophysiologic basis of acute glomerulonephritis is:
A) Renal ischemia
B) Bacterial invasion of the glomerulus
C) An anaphylactic reaction
D) An immune complex reaction
Correct Answer: An immune complex reaction
Rationale: Acute glomerulonephritis, often post-streptococcal, results from an immune complex
reaction where antigen-antibody complexes deposit in the glomeruli, triggering inflammation .
This immune response damages the glomerular membrane, causing hematuria, proteinuria, and
hypertension.
3. Which finding is most consistent with a diagnosis of glomerulonephritis?
,A) Anuria
B) Proteinuria
C) Foul-smelling urine
D) Red blood cell casts in the urine
Correct Answer: Proteinuria
Rationale: Glomerular damage increases capillary permeability, allowing protein and red blood
cells to leak into the filtrate, with proteinuria being a consistent finding . The presence of red
blood cell casts is more specifically indicative of glomerulonephritis .
4. The major underlying factor leading to edema associated with glomerulonephritis and
nephrotic syndrome is:
A) Hematuria
B) Bacteriuria
C) Proteinuria
D) Glycosuria
Correct Answer: Proteinuria
Rationale: Protein loss in the urine decreases plasma oncotic pressure (colloid osmotic pressure)
. Reduced oncotic pressure allows fluid to shift from the intravascular space into the interstitial
tissues, resulting in generalized edema .
5. A patient with gouty arthritis develops renal calculi. These stones are most likely composed
of:
A) Potassium oxalate
B) Struvite
, C) Cysteine
D) Uric acid crystals
Correct Answer: Uric acid crystals
Rationale: Gout causes hyperuricemia, which leads to the precipitation of uric acid crystals in
the urine, forming uric acid stones . Calcium oxalate stones are the most common type overall,
but uric acid stones are specifically associated with gout.
6. The main clinical manifestation of a kidney stone obstructing the ureter is:
A) Oliguria
B) Renal colic
C) Urge incontinence
D) An abdominal mass
Correct Answer: Renal colic
Rationale: A kidney stone moving into the ureter causes severe, intermittent pain known as
renal colic . This colicky pain is due to ureteral spasm as the stone passes, often radiating from
the flank to the groin .
7. Acute pyelonephritis is most typically associated with which symptom?
A) Fever
B) Oliguria
C) Edema
D) Hypertension
Which response is most accurate?
A) "Your kidneys are not filtering blood properly due to an infection."
B) "The glomerular membrane has increased permeability."
C) "Your liver is producing too much protein."
D) "Your renal tubules are secreting protein into the urine."
Correct Answer: The glomerular membrane has increased permeability.
Rationale: Nephrotic syndrome is characterized by damage to the glomerular filtration barrier,
making it more permeable to large molecules like albumin . This increased permeability allows
protein to leak from the blood into the urine (proteinuria), leading to hypoalbuminemia and
subsequent edema .
2. The pathophysiologic basis of acute glomerulonephritis is:
A) Renal ischemia
B) Bacterial invasion of the glomerulus
C) An anaphylactic reaction
D) An immune complex reaction
Correct Answer: An immune complex reaction
Rationale: Acute glomerulonephritis, often post-streptococcal, results from an immune complex
reaction where antigen-antibody complexes deposit in the glomeruli, triggering inflammation .
This immune response damages the glomerular membrane, causing hematuria, proteinuria, and
hypertension.
3. Which finding is most consistent with a diagnosis of glomerulonephritis?
,A) Anuria
B) Proteinuria
C) Foul-smelling urine
D) Red blood cell casts in the urine
Correct Answer: Proteinuria
Rationale: Glomerular damage increases capillary permeability, allowing protein and red blood
cells to leak into the filtrate, with proteinuria being a consistent finding . The presence of red
blood cell casts is more specifically indicative of glomerulonephritis .
4. The major underlying factor leading to edema associated with glomerulonephritis and
nephrotic syndrome is:
A) Hematuria
B) Bacteriuria
C) Proteinuria
D) Glycosuria
Correct Answer: Proteinuria
Rationale: Protein loss in the urine decreases plasma oncotic pressure (colloid osmotic pressure)
. Reduced oncotic pressure allows fluid to shift from the intravascular space into the interstitial
tissues, resulting in generalized edema .
5. A patient with gouty arthritis develops renal calculi. These stones are most likely composed
of:
A) Potassium oxalate
B) Struvite
, C) Cysteine
D) Uric acid crystals
Correct Answer: Uric acid crystals
Rationale: Gout causes hyperuricemia, which leads to the precipitation of uric acid crystals in
the urine, forming uric acid stones . Calcium oxalate stones are the most common type overall,
but uric acid stones are specifically associated with gout.
6. The main clinical manifestation of a kidney stone obstructing the ureter is:
A) Oliguria
B) Renal colic
C) Urge incontinence
D) An abdominal mass
Correct Answer: Renal colic
Rationale: A kidney stone moving into the ureter causes severe, intermittent pain known as
renal colic . This colicky pain is due to ureteral spasm as the stone passes, often radiating from
the flank to the groin .
7. Acute pyelonephritis is most typically associated with which symptom?
A) Fever
B) Oliguria
C) Edema
D) Hypertension
