To detect common untoward effects of phenytoin, the nurse should assess a client with a seizure disorder for which sign or symptom?

A) Protect the skin from sunlight while taking the drug: Tetracycline is known to increase sensitivity to sunlight, leading to a higher risk of sunburn and skin reactions. Advising clients to protect their skin from sun exposure and to use sunscreen is essential to prevent these adverse effects. This precaution helps mitigate the risk of photosensitivity reactions that are commonly associated with tetracycline use.
B) Take with orange juice to enhance gastrointestinal (GI) absorption: Tetracycline should not be taken with dairy products or antacids, as they can bind with the medication and reduce its absorption. While orange juice can enhance absorption, this is not a standard recommendation for tetracycline. Instead, it is generally advised to take tetracycline with water and avoid substances that could interfere with its absorption.
C) Return to the clinic weekly to obtain serum drug levels: Tetracycline typically does not require regular monitoring of serum drug levels, as it does not have a narrow therapeutic index like some other drugs. Instead, patients are generally advised on how to manage side effects and adherence to the medication regimen, rather than frequent clinic visits for drug level monitoring.
D) Take with milk or antacids to prevent gastrointestinal (GI) irritation: Milk and antacids should be avoided when taking tetracycline because they can bind to the medication and significantly reduce its effectiveness. This instruction could lead to decreased therapeutic efficacy and should be avoided. Tetracycline should be taken on an empty stomach to ensure optimal absorption, avoiding interactions with these substances.

A. Administer both prescribed medications as scheduled: Given that the client's total calcium level is already elevated (14 mg/dL), administering additional calcium carbonate could exacerbate hypercalcemia. Calcitriol, a form of vitamin D, can also increase calcium levels, so administering it without addressing the high calcium level could worsen the condition.
B. Hold the calcium carbonate, but administer the calcitriol as scheduled: This option is not appropriate because calcitriol can further increase calcium levels, potentially worsening hypercalcemia. Both medications should be reviewed, and their administration should be adjusted according to the client's current calcium status.
C. Hold the calcitriol, but administer the calcium carbonate as scheduled: Holding calcitriol alone would not address the potential for further increasing calcium levels. Calcium carbonate should also be withheld since the client is already hypercalcemic.
D. Hold both medications until contacting the healthcare provider: This is the most appropriate action. The client's elevated calcium level indicates hypercalcemia, which requires careful management. The healthcare provider should be contacted to assess the situation and determine the appropriate course of action to avoid worsening hypercalcemia.