ATI RN
ATI Nutrition Proctored Exam 2023
1. Cariogenic foods and beverages, which are fermentable carbohydrates that can be metabolized by oral bacteria, reduce salivary pH to what critical level?
- A. 5
- B. 5.5
- C. 6
- D. 6.5
Correct answer: B
Rationale: Cariogenic foods and beverages lower the pH level in the mouth to below 5.5. This is a critical threshold, as it is the point at which enamel begins to demineralize, increasing the risk of dental caries. Therefore, options 'A', 'C', and 'D' are incorrect. Although a pH level of 5, as suggested by option 'A', would indeed lead to demineralization, it's not the threshold value. The pH levels suggested by options 'C' and 'D' (6 and 6.5, respectively) are higher than the critical value of 5.5, which means they would not initiate enamel demineralization and the subsequent risk of dental caries.
2. Which change during pregnancy is related to the slowing of the gastrointestinal tract?
- A. Diarrhea
- B. Constipation
- C. Decreased absorption of iron
- D. Decreased absorption of calcium
Correct answer: B
Rationale: During pregnancy, the gastrointestinal tract tends to slow down, leading to constipation. This is due to hormonal changes that relax the intestinal muscles, allowing more time for nutrient absorption and ultimately leading to constipation. Diarrhea is not typically associated with the slowing of the gastrointestinal tract during pregnancy. Decreased absorption of iron and calcium may occur during pregnancy due to increased demands, but they are not directly related to the slowing of the gastrointestinal tract.
3. A nurse is educating a group of older adults in a community center on weight management using the BMI scale. Using the client's height and weight to calculate BMI, which of the following clients has a healthy BMI?
- A. A client with a weight of 128 lb and height of 70 inches
- B. A client with a weight of 150 lb and height of 68 inches
- C. A client with a weight of 200 lb and height of 72 inches
- D. A client with a weight of 133 lb and height of 60 inches
Correct answer: A client with a weight of 128 lb and height of 70 inches
Rationale: To determine a healthy BMI, we need to calculate it using the formula: BMI = weight (lbs) / height^2 (inches) x 703. For choice A, BMI = 128 / (70 x 70) x 703 = 18.38, which falls within the healthy BMI range of 18.5-24.9. Therefore, choice A is correct. Choices B, C, and D have BMIs of 22.8, 27.1, and 26.1, respectively, which are outside the healthy range. Thus, choices B, C, and D are incorrect.
4. Does the hypothalamus control the feeling of hunger and satiety, and are fats the best nutrient in creating the feeling of satiety?
- A. TRUE
- B. FALSE
- C.
- D.
Correct answer: A
Rationale: Yes, the hypothalamus plays a crucial role in regulating hunger and satiety. Fats are indeed known to be highly satiating nutrients, helping to create a feeling of fullness and satisfaction after a meal. Therefore, both statements are true. Choice B is incorrect because fats are indeed effective in promoting satiety.
5. What is the main function of dietary fiber in managing cholesterol levels?
- A. To reduce absorption of dietary fats
- B. To increase cholesterol synthesis
- C. To enhance protein digestion
- D. To decrease cholesterol absorption
Correct answer: D
Rationale: Dietary fiber helps lower cholesterol levels by binding to bile acids and reducing cholesterol absorption.