Nursing Elites

1. Each statement is true regarding oral exposure to fermentable carbohydrates, except one. Which is the exception?

• A. Longer exposure leads to an increased risk of demineralization
• B. Longer exposure increases the opportunity for remineralization
• C. The Stephan curve illustrates pH changes within plaque after rinsing with a sugar solution
• D. The critical pH at which enamel decalcification occurs is 5.5 or less

Correct answer: B

Rationale: All the statements above are accurate about oral exposure to fermentable carbohydrates, except for option B. In fact, longer exposure to these carbohydrates decreases the opportunity for remineralization. This is because the process of demineralization, in which minerals are lost from the tooth enamel, is sped up by the presence of fermentable carbohydrates. The Stephan curve (option C) is a graph that demonstrates how the pH of dental plaque changes after a sugar rinse, usually dropping (becoming more acidic), which can lead to enamel decalcification. Option D is also accurate, as a pH of 5.5 or lower is the critical point at which enamel starts to decalcify.

2. An estimated _____ percent of persons in the United States who have HIV infection are unaware that they are infected.

• A. 4%
• B. 21%
• C. 34%
• D. 49%

Correct answer: B

Rationale: The correct answer is B: '21%'. Approximately 21% of persons in the United States who have HIV infection are unaware that they are infected. This percentage represents a significant portion of individuals who are not aware of their HIV status, highlighting the importance of increased testing and awareness campaigns. Choices A, C, and D are incorrect as they do not align with the estimated percentage provided in the context.

3. When counseling a teenager about fast food, a dental hygienist could correctly cite which of the following facts, with one exception. Which is the exception?

• A. Most fast food menus lack a rich source of vitamin A
• B. Consumer demands have driven the establishment of salads and other healthy menu items
• C. Shortages of biotin, folate, pantothenic acid, and copper are reported in fast foods
• D. Studies reveal that protein is lacking in most menu items

Correct answer: D

Rationale: The correct answer is 'D'. Fast food is generally not deficient in protein since it often contains meat, a significant source of protein. On the other hand, fast food is known to lack essential nutrients like Vitamin A and certain minerals, as mentioned in choices 'A' and 'C'. Choice 'B' is also accurate as many fast food establishments have started offering healthier options such as salads due to customer demands. Therefore, all options are true except 'D', which makes it the exception.

4. If it is determined that a child is being physically abused by a parent, what would be the most important goal for the nurse to establish with the family?

• A. The child and any siblings will reside in a secure environment
• B. The family will feel at ease in their relationship with the counselor
• C. The family will gain insight into their abusive behavior patterns
• D. The mother will learn to apply verbal discipline with her children

Correct answer: A

Rationale: The primary objective when dealing with cases of child abuse is to ensure the safety of the child and any siblings. This means creating a secure environment free from harm, which is why choice 'A' is the correct answer. While choices 'B', 'C', and 'D' might be subsequent steps in a comprehensive plan to deal with the situation, they are not the immediate priority. Understanding abusive behavioral patterns or improving the relationship with the counselor will not directly lead to the child's safety. Likewise, teaching the mother to apply verbal discipline doesn't guarantee the child's safety if the abusive behavior continues. Therefore, these options are not the most important initial goal.

5. Sickle cell disease is an example of an inherited mistake in the amino acid sequence.

• A. TRUE
• B. FALSE
• C.
• D.

Correct answer: A

Rationale: The statement is TRUE. Sickle cell disease is caused by a genetic mutation in the hemoglobin gene, leading to an abnormal amino acid sequence. This results in the production of abnormal hemoglobin molecules, causing red blood cells to become sickle-shaped. This inherited condition is a classic example of a genetic error affecting the amino acid sequence, making choice A the correct answer. Choices B, C, and D are incorrect as they do not accurately reflect the nature of sickle cell disease.

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