Nokea
During a routine well child exam on a 5-year-old child, a grade II/VI, harsh, late systolic ejection murmur at the upper left sternal border that transmits to both lung fields is auscultated. The child has normal growth and development. What will the nurse practitioner suspect?
- A. Aortic stenosis (AS)
- B. Patent ductus arteriosus (PDA)
- C. Pulmonic stenosis
- D. Tricuspid atresia
Correct Answer: C
Rationale: Pulmonic stenosis may be asymptomatic with a murmur as described above.
You may also like to solve these questions
Causes of uveitis include:
- A. Diabetes
- B. Behçet's disease
- C. Ankylosing spondylitis
- D. Rheumatic fever
Correct Answer: B
Rationale: Behçet's disease, a systemic vasculitis, is a known cause of uveitis, an inflammation of the uvea in the eye.
Polycythaemia:
- A. Is a common cause of jaundice in the newborn
- B. Is significant if haematocrit > 65% on a capillary sample
- C. May cause apnoeas
- D. Exchange transfusion is the treatment of choice in symptomatic cases
Correct Answer: B
Rationale: Polycythaemia is considered significant if the haematocrit exceeds 65% on a capillary sample, as it can lead to hyperviscosity and related complications.
Which among the following is not a feature of low flow - low gradient severe aortic stenosis with preserved left ventricular function?
- A. Mean trans aortic pressure gradient < 40 mm Hg
- B. Aortic valve area < 1 cm²
- C. Stroke volume > 35 ml/m²
- D. Left ventricular ejection fraction > 50%
Correct Answer: C
Rationale: Stroke volume is typically reduced, not increased, in low flow - low gradient severe aortic stenosis.
In 90% of cases of endocarditis, the causative agent is recovered from the first 2 blood cultures. Antimicrobial pretreatment of the patient reduces the yield of blood cultures to
- A. 10%
- B. 20%
- C. 30%
- D. 40%
Correct Answer: A
Rationale: Antimicrobial pretreatment can significantly reduce the yield of blood cultures, often to 10-20%.
These causes often cause secretory diarrhoea except:
- A. Lactose intolerance
- B. E. coli infection
- C. Congenital chloridorrhoea
- D. Blind loop syndrome
Correct Answer: A
Rationale: The correct answer is A because lactose intolerance causes osmotic diarrhoea, not secretory diarrhoea. The other options (b-e) are causes of secretory diarrhoea.