Nursing Elites

1. Which enzyme digests fiber in the large intestine?

• A. salivary amylase
• B. pancreatic amylase
• C. cellulase
• D. none of the above

Correct answer: D

Rationale: The correct answer is 'none of the above.' Human digestive enzymes like salivary amylase and pancreatic amylase cannot digest fiber. Instead, fiber is fermented by gut bacteria in the large intestine. Cellulase, which is an enzyme produced by some animals and microorganisms, can break down cellulose found in plants, but it is not a human digestive enzyme, making it an incorrect choice in this context.

2. Magnesium's major functions in the body would be least likely to include which of the following?

• A. allowing muscles to relax after contraction
• B. assisting the operation of hundreds of enzymes
• C. synthesis of protein in the soft tissues
• D. regulation of body temperature

Correct answer: D

Rationale: Magnesium plays a key role in muscle relaxation, enzyme operation, and protein synthesis, but it is not directly involved in regulating body temperature.

3. A client who is breastfeeding is being taught diet modification by a nurse. Which of the following statements by the client indicates an understanding of the teaching?

• A. I should drink an 8-ounce glass of water each time my baby nurses.
• B. I should take a 1500-milligram iron supplement daily.
• C. I can eat a 2500-calorie daily diet to lose 1 lb per week.
• D. I can eat ounces of swordfish daily.

Correct answer: A

Rationale: The correct answer is A because drinking an 8-ounce glass of water each time the baby nurses helps maintain hydration and support milk production. Choice B is incorrect as the need for iron supplementation should be discussed with a healthcare provider. Choice C is incorrect as a 2500-calorie diet is not typically recommended for weight loss during breastfeeding. Choice D is incorrect as consuming high levels of swordfish is not advisable due to its mercury content, which can be harmful to the baby.

4. What would you do to increase the amount of iron absorbed from a meal?

• A. Drink plenty of coffee before each meal
• B. Avoid eating foods rich in vitamin C with the meal
• C. Eat a calcium-rich food with the meal
• D. Consume orange juice as a beverage with a meal

Correct answer: D

Rationale: The correct answer is D: 'Consume orange juice as a beverage with a meal'. This is because Vitamin C significantly enhances the absorption of non-heme iron, a form of iron found in plant-based foods. Therefore, consuming orange juice, which is rich in vitamin C, with a meal can effectively increase iron absorption. On the contrary, choices A, B, and C are incorrect. Coffee (Choice A) contains polyphenols that can inhibit iron absorption. Avoiding vitamin C-rich foods (Choice B) would decrease iron absorption, not increase it. While calcium (Choice C) is essential for many bodily processes, it can actually inhibit iron absorption when consumed together.

5. A nurse is providing dietary teaching to a client who has a new diagnosis of gastroesophageal reflux disease. Which of the following foods or beverages should the nurse recommend to minimize heartburn?

• A. Orange juice
• B. Decaffeinated coffee
• C. Peppermint
• D. Potatoes

Correct answer: D

Rationale: Potatoes are bland and less likely to relax the lower esophageal sphincter, making them a suitable choice to minimize heartburn in clients with gastroesophageal reflux disease. Orange juice and peppermint are acidic and can exacerbate GERD symptoms, while coffee, even decaffeinated, can stimulate acid production and worsen heartburn.

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