Correct Answer: D

Rationale: The correct answer is to advise the client to avoid using vaginal spermicides while breastfeeding. This instruction is important as spermicides can potentially affect the milk supply and cause irritation. Choice A is incorrect because the effectiveness of the lactation amenorrhea method diminishes after the first six months postpartum. Choice B is incorrect as using the diaphragm used before pregnancy may not fit properly due to changes in the body postpartum. Choice C is incorrect as the transdermal birth control patch is typically applied to the abdomen, buttocks, or upper torso, not specifically the upper arm.

Correct Answer: C

Rationale: The correct answer is C: 'Take medications at the same time every day.' Consistency in medication administration is crucial for stroke recovery to maintain therapeutic drug levels in the body. Choice A, 'Avoid lifting more than 5 pounds,' though important to prevent strain, is not directly related to medication adherence. Choice B, 'Perform range-of-motion exercises daily,' is beneficial for overall recovery but is not specific to medication management. Choice D, 'Monitor blood pressure daily,' is important but does not address the key aspect of medication regimen adherence.

Correct Answer: D

Rationale: An elevated serum creatinine level indicates impaired kidney function, which can affect the metabolism and excretion of enoxaparin, potentially leading to increased drug levels and risk of bleeding. Therefore, it is crucial to report a high serum creatinine level before administering enoxaparin. Platelet count, aPTT, and sodium levels are not directly related to the administration of enoxaparin and would not impact its use; hence, they do not need to be reported before starting the medication.

Correct Answer: A

Rationale: The correct statement for the nurse to make is to advise the client to check the oxygen equipment daily for proper function. This is crucial to ensure the client's home oxygen therapy is working effectively and safely. Choice B is incorrect because adjusting the oxygen flow rate without healthcare provider guidance can be dangerous. Choice C is incorrect as oxygen tanks should be stored upright, not lying flat. Choice D is incorrect and unsafe advice, as smoking near an oxygen source can lead to a fire hazard.

Correct Answer: D

Rationale: The correct answer is D: Aspartate aminotransferase (AST) 60 units/L. An elevated AST level indicates liver damage, a side effect of methotrexate, and should be reported. Choices A, B, and C are within normal ranges and do not indicate potential complications related to methotrexate therapy.