Nokea
The following statements are true regarding a screening test:
- A. Sensitivity indicates the proportion of true positives
- B. Specificity indicates the proportion of true negatives
- C. Sensitivity is inversely related to specificity
- D. Prevalence affects predictive value
Correct Answer: D
Rationale: Prevalence affects predictive value
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Which statement by the mother of a child with rheumatic fever (RF) indicates that she has an understanding of prevention for her other children?
- A. “Whenever one of them gets a sore throat, I will give that child an antibiotic.â€
- B. “There is no treatment since it is viral and must run its course.â€
- C. “If their culture is positive for group A streptococcus, I will give them a full course of their antibiotic.â€
- D. “If their culture is positive for staphylococcus A, I will give them a full course of their antibiotic.â€
Correct Answer: C
Rationale: A positive culture for group A streptococcus indicates a bacterial infection that requires a full course of antibiotics to prevent rheumatic fever, which can develop as a complication of untreated strep throat.
All of the following reduces intensity of first heart sound (S1) except
- A. Mechanical ventilation
- B. Calcific mitral stenosis
- C. Short PR interval
- D. LV dysfunction
Correct Answer: B
Rationale: Calcific mitral stenosis typically increases the intensity of the first heart sound (S1).
Nurse Victoria is teaching the parents of a school-age child. Which teaching topic should take priority?
- A. Prevent accidents
- B. Keeping a night light on to allay fears
- C. Explaining normalcy of fears about body integrity
- D. Encouraging the child to dress without help
Correct Answer: A
Rationale: Accident prevention is a priority for school-age children as they become more independent and engage in activities that may pose risks.
The most common site of osteosarcoma is:
- A. Femur
- B. Humerus
- C. Pelvis
- D. Skull
Correct Answer: A
Rationale: Osteosarcoma most commonly occurs in the long bones, particularly the femur, near the growth plates in children and adolescents.
An adult woman with primary Raynaud phenomenon develops pallor and then cyanosis of her fingers. After warming her hands, the fingers turn red and the client reports a burning sensation. What action should the nurse take?
- A. Apply a cool compress to the affected fingers for 20 minutes
- B. Secure a pulse oximeter to monitor the client's oxygen saturation
- C. Report the finding to the healthcare provider as soon as possible
- D. Continue to monitor the fingers until color returns to normal
Correct Answer: D
Rationale: Monitoring is appropriate as the symptoms are consistent with Raynaud's phenomenon and should resolve with warming.