Before administering Theodur to a 10-year-old being treated for asthma, the nurse should check the:

Correct Answer: C

Rationale: The correct answer is to check the pulse. Theodur is a bronchodilator used in asthma treatment, and one of the side effects is tachycardia (increased heart rate). Therefore, it is essential to assess the pulse rate before administering Theodur to monitor for any potential tachycardia. Checking urinary output (Choice A), blood pressure (Choice B), and temperature (Choice D) are not directly related to the immediate side effects of bronchodilators like Theodur in this context, making them unnecessary assessments.

Correct Answer: D

Rationale: Cyclophosphamide (Cytoxan) can cause hemorrhagic cystitis, a condition characterized by inflammation of the bladder wall leading to bleeding. To prevent this complication, the client should drink at least eight glasses of water a day. Walking to prevent calcium loss (choice A) and increasing fiber intake (choice B) are not directly related to the side effects of Cytoxan, making them unnecessary instructions in this case. While nausea is a common side effect of chemotherapy, the immediate reporting of nausea to the doctor (choice C) is important but not specifically related to the use of Cytoxan in this scenario.

Correct Answer: B

Rationale: The correct answer is telling the client that the medication will change the color of the urine. Rifampin can change the color of the urine and body fluid. Teaching the client about these changes is important as the client might think this is a complication. Answer A is incorrect because there is no specific requirement to take rifampin with juice. Answer C is incorrect because rifampin should be taken at consistent times, not necessarily before going to bed. Answer D is incorrect as rifampin should be taken regularly as prescribed, not based on symptoms like night sweats.

Correct Answer: D

Rationale: Taking corticosteroids in the morning mimics the body's natural release of cortisol, which follows a diurnal pattern with higher levels in the morning. This timing helps regulate the body's inflammatory response and minimizes potential side effects. Answer A is not the primary reason for morning dosing, as adherence concerns can be addressed through other means. Answer B is incorrect since fluid retention is not influenced by the timing of prednisone administration. Answer C is also incorrect as prednisone absorption is not significantly affected by whether it is taken with breakfast or not.

Correct Answer: D

Rationale: When antibiotics and oral contraceptives are taken together, the effectiveness of the oral contraceptives can be reduced, increasing the risk of pregnancy. Therefore, it is important to advise the client to use an alternate method of birth control to prevent unintended pregnancy. Choices A, B, and C are incorrect because there is no evidence to suggest that oral contraceptives decrease the effectiveness of tetracycline, cause nausea, or result in toxicity when taken with antibiotics.