Correct Answer: B

Rationale: Chronic alcohol use disorder can lead to vitamin B6 deficiency due to impaired absorption and increased excretion of the vitamin. While clients with cystic fibrosis may be at risk for fat-soluble vitamin deficiencies, such as vitamins A, D, E, and K, they are not specifically at high risk for vitamin B6 deficiency. Clients taking phenytoin are at risk for folate deficiency, not vitamin B6. Clients prescribed rifampin for tuberculosis are at risk for vitamin D deficiency, not vitamin B6.

Correct Answer: C

Rationale: The correct answer is to participate in compressions or breathing. This is essential to ensure continuous and effective CPR. Relieving the nurse performing CPR (Choice A) is not recommended as it can interrupt the life-saving procedure. Going to get the code cart (Choice B) may be necessary in certain situations but should not take precedence over providing immediate assistance in CPR. Validating the client's advanced directive (Choice D) is not the primary role in this scenario where urgent action is needed to support the client's circulation and breathing.

Correct Answer: C

Rationale: The correct answer is C: Beans. Beans are an excellent choice for individuals following a low-cholesterol diet post-coronary artery bypass grafting due to their low cholesterol content. Beans are high in fiber and protein, making them a heart-healthy option. Choice A, Liver, is high in cholesterol and should be avoided in a low-cholesterol diet. Choice B, Milk, contains cholesterol and saturated fats, which are not ideal for this diet. Choice D, Eggs, are also high in cholesterol and should be limited in a low-cholesterol diet.

Correct Answer: A

Rationale: Instructing the client to avoid caffeine for 8 hours before the EEG is essential. This intervention helps ensure accurate test results by preventing stimulation of the nervous system, which could interfere with the interpretation of the brain's electrical activity. Explaining the procedure and obtaining consent are important steps but do not directly impact the test results. Administering anticonvulsant medication as ordered is a medical intervention and not a preparation step for the test. Instructing the client to wash their hair the morning of the test is not necessary for EEG preparation.

Correct Answer: A

Rationale: The correct answer is A, Tomato juice. Tomato juice is high in vitamin C, which enhances the absorption of nonheme iron from foods. Vitamin C helps convert nonheme iron to a form that is easier for the body to absorb. Tea (choice B) contains tannins that can inhibit iron absorption. Milk (choice C) contains calcium, which can interfere with iron absorption. Dried beans (choice D) are a good source of nonheme iron but do not enhance iron absorption when consumed with nonheme iron.