ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS (100% VERIFIED
ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
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What is acute renal failure?
Correct Answer:
Reversible kidney failure
Expert Rationale:
Acute renal failure (acute kidney injury) is a sudden decline in renal function that is often
reversible if the underlying cause is identified and treated promptly. Kidney function may
recover, especially when perfusion is restored or nephrotoxic agents are removed. A positive
response to diuretics with adequate urine output may indicate preserved tubular function and
potential reversibility.
Why other options are incorrect:
• Chronic renal failure: progressive and irreversible decline in kidney function
• Pyelonephritis: infection of the kidney, not a functional failure state
• Renal calculi: structural obstruction, not primary renal failure
DIF: Recall
REF: Renal System / Acute Kidney Injury
OBJ: Define acute renal failure and its reversibility
TOP: Renal System / Renal Pathophysiology
How is acute pyelonephritis diagnosed?
Correct Answer:
Urine culture, urinalysis (WBC casts), and clinical signs and symptoms; imaging and blood
cultures in complicated cases
Expert Rationale:
Acute pyelonephritis is diagnosed using a combination of clinical presentation and laboratory
testing. Urinalysis may show pyuria and WBC casts, which suggest upper urinary tract infection.
Urine culture confirms the causative organism. In complicated cases, blood cultures and imaging
studies are used to assess severity and rule out obstruction or abscess formation.
Why other options are incorrect:
• Symptoms alone: not specific enough for diagnosis
,• Imaging alone: not sufficient without laboratory confirmation
• Culture alone: does not establish upper vs lower UTI without clinical correlation
DIF: Application
REF: Renal System / Infections of the Urinary Tract
OBJ: Identify diagnostic methods for pyelonephritis
TOP: Renal System / Infectious Disease
What are the goals of treatment for renal calculi (kidney stones)?
Correct Answer:
Manage pain, promote stone passage, reduce stone size, and prevent recurrence
Expert Rationale:
Treatment of renal calculi focuses on relieving acute pain, facilitating spontaneous passage of the
stone, and reducing or eliminating the stone burden. Long-term management includes preventing
recurrence through hydration, dietary modification, and addressing metabolic abnormalities.
Why other options are incorrect:
• Pain control alone: does not address stone passage or prevention
• Antibiotics alone: not indicated unless infection is present
• Surgery alone: not required for all cases
DIF: Recall
REF: Renal System / Nephrolithiasis
OBJ: Identify treatment goals for renal calculi
TOP: Renal System / Urinary Disorders
What is chronic renal failure (CKD)?
Correct Answer:
Progressive loss of renal function due to systemic disease or intrinsic kidney damage
Expert Rationale:
Chronic kidney disease (CKD) is a long-term, progressive decline in kidney function often
caused by diabetes mellitus (most common cause), hypertension, systemic lupus erythematosus,
or primary kidney disease. It is characterized by irreversible nephron loss and worsening renal
function over time.
Why other options are incorrect:
• Acute renal failure: sudden and potentially reversible
• Urinary tract infection: infectious process, not chronic loss of function
• Renal stones: structural obstruction, not progressive failure
DIF: Recall
REF: Renal System / Chronic Kidney Disease
,OBJ: Define chronic renal failure and its causes
TOP: Renal System / Chronic Disease
How is CKD staged?
Correct Answer:
By estimated glomerular filtration rate (GFR) and albuminuria
Expert Rationale:
CKD staging is based on GFR values and the degree of albuminuria rather than symptoms. This
system allows classification of disease severity and guides management and prognosis.
Why other options are incorrect:
• Symptoms alone: not reliable for staging
• Urine color changes: not used for classification
• Blood pressure alone: is a risk factor, not a staging system
DIF: Recall
REF: Renal System / Chronic Kidney Disease Classification
OBJ: Identify criteria used for CKD staging
TOP: Renal System / Disease Classification
Who is a candidate for dialysis?
Correct Answer:
Patients with end-stage renal disease (ESRD) and severe complications such as refractory fluid
overload, metabolic acidosis, hyperkalemia with ECG changes, uremic symptoms, or certain
drug toxicities
Expert Rationale:
Dialysis is indicated in ESRD when kidneys can no longer maintain homeostasis. Indications
include life-threatening electrolyte imbalance (especially hyperkalemia with ECG changes),
severe metabolic acidosis, fluid overload unresponsive to diuretics, uremic symptoms, and
specific toxin ingestions that are dialyzable.
Why other options are incorrect:
• Mild CKD: does not require dialysis
• Isolated hyperkalemia without ECG changes: managed medically first
• Early-stage CKD: still has sufficient renal function
DIF: Application
REF: Renal System / Dialysis Indications
OBJ: Identify indications for dialysis
TOP: Renal System / Renal Failure Management
What are the stages of CKD based on GFR?
, Correct Answer:
Stage I: 90–120; Stage II: 60–89; Stage III: 30–59; Stage IV: 15–29; Stage V: <15 (ESRD)
Expert Rationale:
CKD staging is based on progressive decline in GFR. Stage I indicates normal or increased GFR
with kidney damage, while Stage V represents end-stage renal disease requiring dialysis or
transplant. Progression reflects worsening nephron loss and declining renal function.
Why other options are incorrect:
• Symptom-based staging: not used in CKD classification
• Creatinine alone: insufficient for staging
• Urine output alone: not reliable for staging severity
DIF: Recall
REF: Renal System / CKD Classification
OBJ: Identify CKD stages based on GFR
TOP: Renal System / Chronic Kidney Disease
What are complications of decreased GFR?
Correct Answer:
Anemia, hypertension, decreased calcium absorption, hyperlipidemia, heart failure, left
ventricular hypertrophy, fluid overload, hyperkalemia, hyperparathyroidism, hyperphosphatemia,
metabolic acidosis, and malnutrition
Expert Rationale:
Decreased GFR leads to accumulation of waste products and disruption of electrolyte, endocrine,
and fluid balance. Reduced erythropoietin causes anemia, impaired vitamin D activation leads to
hypocalcemia, and phosphate retention contributes to hyperparathyroidism. Fluid and sodium
retention contribute to hypertension, heart failure, and left ventricular hypertrophy.
Why other options are incorrect:
• Isolated electrolyte imbalance: CKD causes multiple systemic complications
• Normal renal function: would not produce these metabolic changes
• Acute infection alone: does not produce chronic systemic effects listed
DIF: Analysis
REF: Renal System / Chronic Kidney Disease Complications
OBJ: Identify systemic complications of reduced GFR
TOP: Renal System / Pathophysiology**
What are the warning signs of GERD, especially in patients over age 50?
Correct Answer:
Dysphagia, odynophagia, nausea and vomiting, weight loss, melena, and early satiety