Nokea
The following statements regarding retinoblastoma are correct:
- A. It is usually fatal even if diagnosis is made early
- B. The tumour is heritable
- C. They may occur bilaterally
- D. The finding of leucorrhoea suggests the diagnosis
Correct Answer: B
Rationale: Retinoblastoma is heritable and can occur bilaterally. Early diagnosis improves prognosis, and leucorrhoea is not associated with retinoblastoma.
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What are TWO possible interventions for an infant with Tetralogy of Fallot who has recurrent desaturation episodes on propranolol?
- A. Full surgical repair
- B. Interim repair with RVOT stent or shunt
- C. Propranolol dose adjustment
- D. All of the above
Correct Answer: B
Rationale: Interim repair with RVOT stent or shunt can be used to improve oxygenation in infants who are not candidates for immediate full surgical repair.
The MOST common cyanotic congenital cardiac lesion to present in the newborn period is
- A. dextroposed heart
- B. transposition of great arteries
- C. tetralogy of Fallot
- D. truncus arteriosus
Correct Answer: B
Rationale: Transposition of the great arteries is the most common cyanotic congenital heart defect presenting in the neonatal period.
The following diseases have diagnostic EEG findings:
- A. Petit mal epilepsy
- B. Infantile spasms
- C. Acute measles encephalopathy
- D. Herpes encephalitis
Correct Answer: B
Rationale: Infantile spasms, also known as West syndrome, have a characteristic EEG pattern called hypsarrhythmia, which is diagnostic.
The definition of hypertension in children is
- A. average systolic blood pressure (SBP) and/or diastolic BP that is ≥95th percentile for age, sex, on ≥2 occasions
- B. average systolic blood pressure (SBP) and/or diastolic BP that is ≥95th percentile for age, sex, and height on ≥2 occasions
- C. average systolic blood pressure (SBP) and/or diastolic BP that is ≥95th percentile for age, sex, and height on ≥3 occasions
- D. average systolic blood pressure (SBP) and/or diastolic BP that is ≥90th percentile for age, sex, and height on ≥3 occasions
Correct Answer: C
Rationale: Hypertension in children is defined as BP ≥95th percentile for age, sex, and height on ≥3 occasions.
Ventricular tachycardia (VT) is defined as at least 3 premature ventricular contractions PVCs at >120 beats/min. Hemodynamically unstable patients with VT should be immediately treated with
- A. catheter ablation
- B. ICD implantation
- C. DC cardioversion
- D. amiodarone
Correct Answer: C
Rationale: DC cardioversion is the immediate treatment for hemodynamically unstable VT.