Nokea
The following are potent vasoconstrictors:
- A. Renin
- B. Angiotensin I
- C. Nitric oxide
- D. PGI2
Correct Answer: A
Rationale: Renin: Renin is a precursor enzyme in the RAAS that helps in converting angiotensinogen into angiotensin I, a potent vasoconstrictor.
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The most common cardiac anomaly associated with Coarctation of aorta is
- A. Bicuspid aortic valve
- B. Subaortic ventricular septal defect
- C. Atrial septal defect
- D. Supramitral ring
Correct Answer: A
Rationale: Bicuspid aortic valve is the most common cardiac anomaly associated with coarctation of the aorta.
A characteristic sign of hypercalcaemia is:
- A. Trousseau's sign
- B. Chvostek's sign
- C. Homan's sign
- D. Kussmaul's sign
Correct Answer: A
Rationale: Trousseau's sign, which involves muscle spasms when a blood pressure cuff is inflated, is a common indicator of hypocalcemia, not hypercalcemia.
What associated manifestation might the nurse occasionally find in a child diagnosed with Wilms tumor?
- A. Atrial fibrillation
- B. Hypertension
- C. Endocarditis
- D. Hyperlipidemia
Correct Answer: B
Rationale: Wilms tumor, due to its location in the kidney, can be associated with secondary hypertension.
The nurse is caring for a child with persistent hypoxia secondary to a cardiac defect. The nurse recognizes that a risk exists of cerebrovascular accidents (strokes). Which is an important objective to decrease this risk?
- A. Minimize seizures
- B. Prevent dehydration
- C. Promote cardiac output
- D. Reduce energy expenditure
Correct Answer: B
Rationale: In children with persistent hypoxia, polycythemia develops. Dehydration must be prevented in hypoxemic children because it potentiates the risk of strokes. Minimizing seizures, promoting cardiac output, and reducing energy expenditure will not reduce the risk of cerebrovascular accidents.
Congenital toxoplasmosis is associated with:
- A. Microcephaly
- B. Chorioretinitis
- C. Sore throat
- D. Sacroileitis
Correct Answer: B
Rationale: Chorioretinitis is a common manifestation of congenital toxoplasmosis, often leading to vision problems and ocular abnormalities.