why is it important to use randomization in a scientific experiment
Logo

Nursing Elites

HESI LPN

HESI PN Nutrition Practice Exam

1. Why is randomization important in a scientific experiment?

Correct answer: B

Rationale: Randomization is crucial in a scientific experiment to eliminate bias in the assignment of subjects to groups. By randomly assigning subjects, it helps ensure that any differences observed in the outcomes are due to the experimental treatment and not to preexisting differences between groups. Choice A is incorrect because randomization does not guarantee representativeness but rather minimizes the impact of confounding variables. Choice C is not entirely accurate; while randomization can contribute to accuracy and validity, its primary purpose is to reduce bias. Choice D is incorrect as the goal of randomization is not to balance the number of subjects but to prevent systematic differences between groups.

2. What is a crucial aspect of managing a child with cystic fibrosis?

Correct answer: B

Rationale: Daily chest physiotherapy is crucial in managing cystic fibrosis as it helps clear mucus from the lungs, improves respiratory function, and reduces the risk of lung infections. High-sugar diets are not recommended for individuals with cystic fibrosis as they can contribute to mucus production, exacerbating respiratory issues. Frequent use of antacids is not a primary treatment for cystic fibrosis, as it does not address the underlying lung issues. Limiting fluid intake is not typically advised for individuals with cystic fibrosis, as adequate hydration is essential for maintaining lung function and thinning mucus secretions.

3. What is a common complication of uncontrolled type 1 diabetes in children?

Correct answer: B

Rationale: Ketoacidosis is a prevalent complication of uncontrolled type 1 diabetes in children. It is a serious condition characterized by high levels of ketones in the blood, leading to acidosis. Prompt medical attention is necessary to manage this potentially life-threatening condition. Choice A, hyperactivity, is not a typical complication of uncontrolled type 1 diabetes. Choice C, hypertension, is not a direct complication of type 1 diabetes in children. Choice D, hypoglycemia, is more commonly associated with low blood sugar levels, which can occur due to excessive insulin administration or inadequate food intake in diabetic individuals, rather than uncontrolled type 1 diabetes.

4. What should be assessed in a child with suspected appendicitis?

Correct answer: B

Rationale: The correct answer is to assess bowel sounds and pain location. In a child with suspected appendicitis, focusing on bowel sounds and pain location, particularly in the lower right quadrant, is crucial. This assessment helps to identify symptoms commonly associated with appendicitis. Assessing the level of consciousness (Choice A) is important in other conditions such as head injuries or neurological issues. Skin color and temperature (Choice C) are more indicative of circulatory or skin-related problems. Heart rate and blood pressure (Choice D) are vital signs that are essential to assess in various conditions but are not specific to suspected appendicitis.

5. What is the primary reason influencing most people's food choices?

Correct answer: B

Rationale: The primary reason most people choose the foods they eat is taste. While cost, convenience, and nutritional value also play a role in food choices, taste often takes precedence as people are more likely to select foods that they find appealing in flavor. Therefore, options A, C, and D are incorrect as taste is the chief factor influencing food choices.

Similar Questions

How should a healthcare professional handle a child with a new diagnosis of type 2 diabetes?
How should a healthcare provider respond to a parent concerned about their child's sleep pattern?
What is an important consideration when administering medications to a child with hepatic dysfunction?
Which of the following is a function of carbohydrates in the body?
What is a common symptom of Kawasaki disease?

Access More Features

HESI LPN Basic
$69.99/ 30 days

  • 5,000 Questions with answers
  • All HESI courses Coverage
  • 30 days access

HESI LPN Premium
$149.99/ 90 days

  • 5,000 Questions with answers
  • All HESI courses Coverage
  • 30 days access

Other Courses