An adult with arthritis has been receiving treatment with naproxen and now reports ongoing stomach pain, increasing weakness, and fatigue. Which laboratory test should the nurse monitor?

Choice A reason: When the client has ankle edema, it is important for the nurse to assess for other signs of fluid retention, such as weight gain, jugular venous distension, and crackles in the lungs. However, ankle edema alone is not a specific indicator of preeclampsia or eclampsia, which are conditions that can cause hyperreflexia or increased DTRs.

Choice B reason: This is the correct answer because if the client has an elevated blood pressure, it is important for the nurse to assess for other signs of preeclampsia or eclampsia, such as proteinuria, headache, blurred vision, epigastric pain, and hyperreflexia or increased DTRs. These conditions can cause seizures and other complications that can endanger the mother and fetus.

Choice C reason: During admission to labor and delivery, it is important for the nurse to assess various aspects of the client's health status, such as vital signs, fetal heart rate, contractions, cervical dilation, and pain level. However, assessing DTRs is not a routine part of labor and delivery assessment unless there are signs of preeclampsia or eclampsia.

Choice D reason: Within the first trimester of pregnancy, it is important for the nurse to assess for signs of pregnancy-related nausea and vomiting, bleeding, infection, and ectopic pregnancy. However, assessing DTRs is not a routine part of first trimester assessment unless there are signs of neurological disorders or spinal cord injury.

Choice A reason: Conversion of the client's PPD test from negative to positive is not the most important information for the nurse to note, as this is an expected finding for a client who has been exposed to tuberculosis and does not affect the administration of isoniazid. This is a distractor choice.

Choice B reason: History of intravenous drug abuse is not the most important information for the nurse to note, as this is not directly related to the use of isoniazid and does not contraindicate its administration. This is another distractor choice.

Choice C reason: Current diagnosis of hepatitis B is the most important information for the nurse to note, as this can increase the risk of hepatotoxicity and liver damage from isoniazid, which requires close monitoring and possible dose adjustment. Therefore, this is the correct choice.

Choice D reason: Length of time of the exposure to tuberculosis is not the most important information for the nurse to note, as this does not influence the dosage or frequency of isoniazid and does not indicate any complication or adverse reaction. This is another distractor choice.