Nokea
In statistical methodology:
- A. The median and mean are different when the population distribution is skewed
- B. Mode refers to the value that occurs with the highest frequency
- C. The value of 'r' (coefficient of variation) ranges from -1 to +1
- D. Incidence is defined as the number of cases seen in the population at any given period of time
Correct Answer: A
Rationale: The median and mean differ in skewed distributions because the mean is influenced by extreme values, while the median is not.
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Of the following, the cyanotic cardiac lesion with decreased pulmonary blood flow is
- A. transposition of the great vessels
- B. single ventricle
- C. truncus arteriosus
- D. tricuspid atresia
Correct Answer: D
Rationale: Tricuspid atresia results in decreased pulmonary blood flow due to lack of right ventricular input.
Congenital heart disease causing cyanosis without respiratory distress include EXCEPT
- A. tricuspid atresia
- B. aortic stenosis
- C. Ebstein anomaly
- D. pulmonary atresia
Correct Answer: B
Rationale: Tricuspid atresia, Ebstein anomaly, and pulmonary atresia can cause cyanosis without respiratory distress, while aortic stenosis typically does not.
Which therapeutic management should the nurse expect to implement for a child with rheumatic fever?
- A. Administering penicillin
- B. Avoiding salicylates (aspirin)
- C. Imposing strict bed rest for 4 to 6 weeks
- D. Administering corticosteroids if chorea develops
Correct Answer: A
Rationale: The goal of medical management is the eradication of the hemolytic streptococci. Penicillin is the drug of choice. Salicylates can be used to control the inflammatory process, especially in the joints, and reduce the fever and discomfort. Bed rest is recommended for the acute febrile stage, but it does not need to be strict. The chorea is transient and will resolve without treatment.
Deafness can develop due to:
- A. Unconjugated hyperbilirubinaemia in the newborn
- B. Pneumococcal meningitis
- C. Alport syndrome
- D. Cleft palate
Correct Answer: B
Rationale: Pneumococcal meningitis is a known cause of sensorineural hearing loss due to inflammation and damage to the cochlea.
Proteins found in muscle fibres include:
- A. Vimentin
- B. Saccharin
- C. Keratin
- D. Desmin
Correct Answer: D
Rationale: Desmin: Desmin is an intermediate filament protein found in muscle fibers, playing a critical role in maintaining structural integrity and organization within muscle cells.