Nokea
What condition is the most common cause of acute renal failure in children?
- A. Pyelonephritis
- B. Tubular destruction
- C. Severe dehydration
- D. Upper tract obstruction
Correct Answer: C
Rationale: Severe dehydration, causing poor renal perfusion, is the most common cause of acute renal failure in children, often reversible with fluid restoration. Pyelonephritis and obstruction are less common causes, and tubular destruction is not a primary cause.
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What measure of fluid balance status is most useful in a child with acute glomerulonephritis?
- A. Proteinuria
- B. Daily weight
- C. Specific gravity
- D. Intake and output
Correct Answer: B
Rationale: Daily weight is the most accurate measure of fluid balance in acute glomerulonephritis, reflecting edema changes. Proteinuria indicates disease severity, specific gravity is unreliable due to proteinuria and hematuria, and intake/output is less accurate, especially in non-toilet-trained children.
The nurse is teaching a child experiencing severe edema associated with minimal change nephrotic syndrome about his diet. The nurse should discuss what dietary need?
- A. Consuming a regular diet
- B. Increasing protein
- C. Restricting fluids
- D. Decreasing calories
Correct Answer: C
Rationale: Restricting fluids and sodium during severe edema in MCNS helps manage fluid retention. A regular diet isn?t advised, high protein doesn?t alter disease course, and adequate calories are needed for growth, despite appetite challenges.
In teaching the parent of a newly diagnosed 2-year-old child with pyelonephritis related to vesicoureteral reflux (VUR), the nurse should include which information?
- A. Limit fluids to reduce reflux.
- B. Give cranberry juice twice a day.
- C. Have siblings examined for VUR.
- D. Surgery is indicated to reverse scarring.
Correct Answer: C
Rationale: VUR has a 36% incidence in siblings, necessitating screening to detect and prevent scarring. Fluid restriction is not advised, cranberry juice lacks proven efficacy in children, and surgery may be needed for severe VUR but doesn?t reverse existing scarring.
What pathologic process is believed to be responsible for the development of postinfectious glomerulonephritis?
- A. Infarction of renal vessels
- B. Immune complex formation and glomerular deposition
- C. Bacterial endotoxin deposition on and destruction of glomeruli
- D. Embolization of glomeruli by bacteria and fibrin from endocardial vegetation
Correct Answer: B
Rationale: Postinfectious glomerulonephritis results from immune complexes formed after streptococcal infection, depositing in glomerular capillaries. Renal vessel infarction occurs in sickle cell disease, bacterial endotoxins aren?t involved, and embolization is linked to bacterial endocarditis.
A child is admitted in acute renal failure (ARF). Therapeutic management to rapidly provoke a flow of urine includes the administration of what medication?
- A. Propranolol (Inderal)
- B. Calcium gluconate
- C. Mannitol (Osmitrol) or furosemide (Lasix) (or both)
- D. Sodium, chloride, and potassium
Correct Answer: C
Rationale: Mannitol or furosemide promotes urine flow in ARF if glomerular function is intact, inducing osmotic diuresis. Propranolol doesn?t affect diuresis, calcium gluconate addresses hyperkalemia, and electrolytes like sodium, chloride, and potassium are avoided to prevent complications.