Complement system:
- A. Is activated by bacterial endotoxins by the classical pathway
- B. Reduced C3 and C4 are usual findings in acute glomerulonephritis
- C. Hereditary angioneurotic oedema is caused by deficiency of one of the components of the classical pathway of the system
- D. Is part of humoral immunity
Correct Answer: D
Rationale: The complement system is a key component of humoral immunity, playing a role in the immune response to pathogens.
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Which defect results in increased pulmonary blood flow?
- A. Pulmonic stenosis
- B. Tricuspid atresia
- C. Atrial septal defect
- D. Transposition of the great arteries
Correct Answer: C
Rationale: Atrial septal defect results in increased pulmonary blood flow. Blood flows from the left atrium (higher pressure) into the right atrium (lower pressure) and then to the lungs via the pulmonary artery. Pulmonic stenosis is an obstruction to blood flowing from the ventricles. Tricuspid atresia results in decreased pulmonary blood flow. Transposition of the great arteries results in mixed blood flow.
The most likely diagnosis in the patient described is
- A. persistent pulmonary hypertension
- B. transposition of the great arteries
- C. truncus arteriosus
- D. pulmonary atresia
Correct Answer: B
Rationale: Transposition of the great arteries often presents with cyanosis due to mixing of oxygenated and deoxygenated blood.
Obesity in childhood:
- A. Is usually associated with hypogonadism
- B. Is unlikely to lead to adult obesity
- C. Is more common in families in Social Class I than in Social Class V
- D. Can lead to overestimation of the dose of intravenous fluids when these are required
Correct Answer: C
Rationale: Childhood obesity is more common in higher social classes. It is not typically associated with hypogonadism and can lead to adult obesity. Overestimation of fluid doses is not a recognized issue.
Which information should the nurse know when caring for a child with Kawasaki disease?
- A. A child’s fever is usually responsive to antibiotics within 48 hours.
- B. The principal area of involvement is the joints.
- C. Aspirin is contraindicated.
- D. Therapeutic management includes administration of gamma globulin and aspirin.
Correct Answer: D
Rationale: High-dose IV gamma globulin and aspirin therapy is indicated to reduce the incidence of coronary artery abnormalities when given within the first 10 days of the illness. The fever of Kawasaki disease is unresponsive to antibiotics and antipyretics. Mucous membranes, conjunctiva, changes in the extremities, and cardiac involvement are seen. Aspirin is part of the therapy.
A nurse assesses an older adult client who is experiencing a myocardial infarction. Which clinical manifestation should the nurse expect?
- A. Excruciating pain on inspiration
- B. Left lateral chest wall pain
- C. Disorientation and confusion
- D. Numbness and tingling of the arm
Correct Answer: C
Rationale: Older adults may present with atypical symptoms of myocardial infarction, such as confusion or disorientation, rather than classic chest pain.