Nokea
The initial treatment of choice for a symptomatic patient with isolated pulmonic stenosis is
- A. closed surgical blade valvotomy
- B. open surgical valvotomy
- C. balloon catheter valvuloplasty
- D. Blalock-Taussig shunt
Correct Answer: C
Rationale: Balloon catheter valvuloplasty is less invasive and effective for relieving pulmonic stenosis.
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Causes of a dilated renal pelvis in a foetal scan include:
- A. Normal variant
- B. Vesico-ureteric reflux
- C. Pelvi-ureteric junction obstruction
- D. Multicystic kidney
Correct Answer: A
Rationale: A dilated renal pelvis can be a normal variant in a foetal scan, often resolving spontaneously without intervention.
The nurse is caring for a child who has undergone a cardiac catheterization. During recovery, the nurse notices the dressing is saturated with bright red blood. The nurse's first action is to:
- A. Call the interventional cardiologist
- B. Notify the cardiac catheterization laboratory that the child will be returning
- C. Apply a bulky pressure dressing over the present dressing
- D. Apply direct pressure 1 inch above the puncture site
Correct Answer: D
Rationale: Direct pressure above the puncture site helps control bleeding by localizing pressure over the vessel.
What are FOUR possible differential diagnoses associated with aortopathy in a child, aside from Marfan’s?
- A. Ehlers-Danlos Syndrome (vascular type IV)
- B. Bicuspid aortic valve
- C. Takayasu Arteritis
- D. Unrepaired coarctation of the aorta
Correct Answer: A
Rationale: These are potential differential diagnoses associated with aortopathy in children, aside from Marfan’s syndrome, which is a common condition linked to aortic dilation.
Causes of pancytopenia and splenomegaly include:
- A. Low-grade non-Hodgkin's lymphoma
- B. Gaucher's disease
- C. Alcoholic cirrhosis
- D. BI2 deficiency
Correct Answer: B
Rationale: Gaucher's disease, a lysosomal storage disorder, can cause pancytopenia and splenomegaly due to bone marrow infiltration and hypersplenism.
The following are true statements:
- A. Tissue plasminogen activator is derived from endothelium
- B. Heparin acts through antithrombin III
- C. Protein C deficiency is autosomal recessive transmitted
- D. Protein C is vitamin K dependent
Correct Answer: B
Rationale: Heparin acts through antithrombin III: Heparin enhances the activity of antithrombin III, which inhibits thrombin and other clotting factors, helping prevent clot formation.