Nokea
The pH of urine:
- A. Is a useful indicator of the acid/base balance of blood
- B. Rises on a vegetarian diet
- C. Is determined by the concentration of ammonium
- D. Is lower than 5.5 in renal tubular acidosis
Correct Answer: A
Rationale: Urine pH reflects blood acid/base balance. A vegetarian diet typically raises urine pH, and renal tubular acidosis causes a higher pH, not lower.
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The child becomes unresponsive. The most likely underlying lesion is
- A. cardiomyopathy
- B. anomalous coronary artery
- C. tetralogy of Fallot
- D. constipation
Correct Answer: C
Rationale: Tetralogy of Fallot can cause hypoxic spells leading to unresponsiveness.
Childhood autism:
- A. Is commoner in boys
- B. Is characterised by extreme delay of social milestones
- C. Repetitive tasks are commonly performed
- D. Is characterised by extremely chaotic routines
Correct Answer: A
Rationale: Autism spectrum disorder is more commonly diagnosed in boys than girls, with a male-to-female ratio of approximately 4:1.
What is one of the most frequent causes of hypovolemic shock in children?
- A. Sepsis
- B. Blood loss
- C. Anaphylaxis
- D. Congenital heart disease
Correct Answer: B
Rationale: Blood loss is the most frequent cause of hypovolemic shock in children. Sepsis causes septic shock, which is overwhelming sepsis and circulating bacterial toxins. Anaphylactic shock results from extreme allergy or hypersensitivity to a foreign substance. Congenital heart disease contributes to hypervolemia, not hypovolemia.
Deafness can develop due to:
- A. Unconjugated hyperbilirubinaemia in the newborn
- B. Pneumococcal meningitis
- C. Alport syndrome
- D. Cleft palate
Correct Answer: B
Rationale: Pneumococcal meningitis is a known cause of sensorineural hearing loss due to inflammation and damage to the cochlea.
The nurse is caring for a child with a diagnosis of Kawasaki disease. The child’s parent asks the nurse, “How does Kawasaki disease affect my child’s heart and blood vessels?†On what understanding is the nurse’s response based?
- A. Inflammation weakens blood vessels, leading to aneurysm.
- B. Increased lipid levels lead to the development of atherosclerosis.
- C. Untreated disease causes mitral valve stenosis.
- D. Altered blood flow increases cardiac workload with resulting heart failure.
Correct Answer: A
Rationale: Inflammation of vessels weakens the walls of the vessels and often results in aneurysm.