a positive correlation between two variables indicates what

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Nutrition Final Exam Quizlet

1. What does a positive correlation between two variables indicate?

A. One variable causes the other.
B. Both variables move in the same direction.
C. Both variables move in opposite directions.
D. There is no relationship between the variables.

Correct answer: B

Rationale: A positive correlation between two variables indicates that they move in the same direction. This means that as one variable increases (or decreases), the other variable also increases (or decreases). Choice A is incorrect because correlation does not imply causation; it only shows a relationship between variables. Choice C is incorrect as it describes a negative correlation where variables move in opposite directions. Choice D is incorrect as a positive correlation implies a relationship between the variables.

2. What is an essential aspect of managing a child with juvenile idiopathic arthritis (JIA)?

A. Encouraging joint mobility and physical therapy
B. Restricting all forms of exercise
C. Increasing sugar intake
D. Using only oral medications

Correct answer: A

Rationale: Encouraging joint mobility and physical therapy is crucial in managing juvenile idiopathic arthritis (JIA). This approach helps maintain joint function, reduce stiffness, and improve the overall quality of life for children with JIA. Restricting all forms of exercise (Choice B) is not recommended, as appropriate physical activity is beneficial for joint health and overall well-being. Increasing sugar intake (Choice C) is not a recommended practice for managing JIA, as a healthy diet is important for overall well-being and can help reduce inflammation. Using only oral medications (Choice D) may not be sufficient for managing JIA, as a comprehensive treatment plan often includes a combination of medications, physical therapy, and other interventions to effectively manage the condition.

3. Parents of a 6-month-old child, diagnosed with iron deficiency anemia, ask why it was not diagnosed earlier. What should the nurse say?

A. Are you sure your child has iron deficiency anemia?
B. Maternal stores of iron are depleted at about 6 months.
C. This anemia is caused by blood loss.
D. The child may not have had it for a long time.

Correct answer: B

Rationale: The correct answer is B: 'Maternal stores of iron are depleted at about 6 months.' Iron deficiency anemia becomes apparent around 6 months of age when the infant's iron stores, primarily received from the mother during pregnancy, are depleted. This timing coincides with the introduction of solid foods, which may lack sufficient iron. Choices A, C, and D are incorrect because they do not address the specific reason why iron deficiency anemia is typically diagnosed around 6 months of age.

4. What intervention is recommended for a child with severe dehydration?

A. Oral rehydration therapy
B. Intravenous fluid replacement
C. High-protein diet
D. Increased physical activity

Correct answer: B

Rationale: Intravenous fluid replacement is the recommended intervention for a child with severe dehydration because it allows for rapid restoration of fluid and electrolyte balance. In severe cases, oral rehydration therapy (Choice A) may not be tolerated due to the child's condition. A high-protein diet (Choice C) is not the primary intervention and does not address the immediate fluid and electrolyte imbalance. Increased physical activity (Choice D) is contraindicated in severe dehydration as it can exacerbate fluid loss, making intravenous fluid replacement the most suitable choice for prompt correction of the severe dehydration.

5. How should a child with a newly diagnosed seizure disorder be managed?

A. Avoid all physical activity
B. Monitor for triggers and ensure safety
C. Increase dietary sodium intake
D. Restrict all forms of social interaction

Correct answer: B

Rationale: When managing a child with a newly diagnosed seizure disorder, it is essential to monitor for triggers and ensure safety. By identifying triggers such as lack of sleep, stress, or specific foods, healthcare professionals can help prevent seizures. Ensuring safety involves creating a safe environment to prevent injuries during a seizure. Choices A, C, and D are incorrect. Avoiding all physical activity can be detrimental as appropriate exercise is essential for overall health. Increasing dietary sodium intake is not a standard recommendation for managing seizures. Restricting all forms of social interaction is unnecessary and can have negative effects on the child's emotional well-being.