Nokea
Assume you are going to estimate the prevalence of amoebic dysentery in a small country which harbors a total number of population of 530,000; you find that 57,000 of the population are infected by the disease. The prevalence of this disease is closest to
- A. 5.33%
- B. 7.45%
- C. 10.75%
- D. 20.22%
Correct Answer: C
Rationale: Prevalence = (Number of infected / Total population) * 100 = (57,000 / 530,000) * 100 ≈ 10.75%.
You may also like to solve these questions
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: C
Rationale: In a child with persistent hypoxia secondary to a cardiac defect, promoting cardiac output is crucial to decreasing the risk of cerebrovascular accidents (strokes). Hypoxia resulting from the cardiac defect can lead to inadequate oxygen supply to the brain, increasing the risk of strokes. By optimizing cardiac output, the body can deliver sufficient oxygen to vital organs, including the brain, reducing the likelihood of cerebrovascular accidents. It is essential to focus on supporting cardiac function to improve overall perfusion and oxygenation levels, ultimately helping to mitigate the risk of strokes in this vulnerable population.
A patient is being taught the action of digoxin, which is an inotropic agent. The nurse defines an inotropic agent as a medication that has which of the following actions?
- A. Decreases heart rate
- B. Increases conduction time
- C. Increases heart rate
- D. Strengthens heart contraction
Correct Answer: D
Rationale: An inotropic agent, such as digoxin, is a medication that strengthens the contraction of the heart muscle. It works by increasing the force of each heartbeat, helping the heart pump more efficiently. This can be beneficial in conditions such as heart failure or certain types of arrhythmias where the heart's pumping ability is compromised. Inotropic agents do not decrease heart rate, increase conduction time, or increase heart rate; their primary action is to enhance the heart's contractility.
The pediatric nurse advises a parent how to best convey the circumstances surrounding the sudden death of an 18-month-old patient to a four-year-old sibling. The nurse anticipates that the sibling:
- A. may feel guilty about the patient's death.
- B. may mistrust the parent.
- C. understands the permanence of death.
- D. will role-play the patient's death.
Correct Answer: A
Rationale: Young children often struggle with understanding death and may internalize feelings of guilt, believing they had a role in the event.
The nurse notices that a 10-month-old infant being seen in the clinic is wearing expensive, inflexible, high-top shoes. The nurse should explain that:
- A. soft and flexible shoes are generally better.
- B. high-top shoes are necessary for support.
- C. inflexible shoes are necessary to prevent in-toeing and out-toeing.
- D. this type of shoe will encourage the infant to walk sooner.
Correct Answer: A
Rationale: Soft and flexible shoes are generally better for infants who are learning to walk. Infants have soft and pliable bones in their feet that are still developing, so it is important for them to wear shoes that allow natural movement and flexibility. High-top shoes and inflexible shoes may restrict the natural movement of the foot and can hinder the infant's ability to develop balance and coordination while learning to walk. It is important for infants to wear shoes that are comfortable, lightweight, and provide some protection without restricting their foot movements.
A nurse is counseling parents of a child beginning to show signs of being overweight. The nurse accurately relates which body mass index (BMI)-for-age percentile indicates a risk for being overweight?
- A. 10th percentile
- B. 9th percentile
- C. 85th percentile
- D. 95th percentile
Correct Answer: D
Rationale: The body mass index (BMI)-for-age percentile indicating a risk for being overweight is the 95th percentile. This means that if a child's BMI falls at or above the 95th percentile for their age group, they are classified as overweight. This percentile is used as a cutoff point to identify children at risk of being overweight and to guide intervention strategies such as lifestyle changes, increased physical activity, and dietary modifications. Parents should work with healthcare providers to address their child's weight status and implement appropriate measures to promote a healthy lifestyle.