Correct Answer: C

Rationale: Jaundice is an adverse reaction that the nurse should identify when assessing a client taking Gemfibrozil. It is associated with liver impairment, which can be a side effect of this medication. Mental status changes and tremors are not typically associated with Gemfibrozil use. Pneumonia is not a common adverse reaction to this medication, and its occurrence is not directly linked to Gemfibrozil use.

Correct Answer: A

Rationale: Lisinopril is an ACE inhibitor that can cause hyperkalemia by reducing the excretion of potassium in the kidneys. Monitoring serum potassium levels is essential to prevent complications such as cardiac arrhythmias. Therefore, the healthcare professional should closely monitor the client's serum potassium levels when they are on Lisinopril. Choices B, C, and D are incorrect because Lisinopril primarily affects potassium levels due to its mechanism of action as an ACE inhibitor. Serum sodium, calcium, and magnesium levels are not typically affected by Lisinopril in the same way as potassium.

Correct Answer: A

Rationale: The correct answer is A. It is crucial for clients on Digoxin to monitor their heart rate. A heart rate less than 60/min can indicate bradycardia, a potential side effect of Digoxin. Therefore, the client should be instructed to contact the provider if their heart rate is less than 60/min to prevent complications and receive appropriate management. Choices B, C, and D are incorrect. Checking the pulse rate for 30 seconds and multiplying by 2 is not specific to Digoxin administration. Increasing sodium intake is contraindicated as Digoxin can lead to sodium retention. Taking Digoxin with food if nausea occurs is not recommended as it may affect the drug's absorption.

Correct Answer: A

Rationale: Corrected Rationale: Imatinib is known to cause edema as an adverse effect. The nurse should closely monitor the client for signs of fluid retention, such as swelling of the extremities or weight gain. Edema can indicate potential complications and requires prompt intervention to prevent further issues. Choices B, C, and D are incorrect because they are not typically associated with imatinib use. Constipation, dry mouth, and urinary retention are not commonly reported adverse effects of imatinib therapy.

Correct Answer: A

Rationale: Phenobarbital, with a long half-life of 4 days, remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should administer phenobarbital once a day to maintain a consistent therapeutic effect without the need for multiple daily doses. Administering the medication more than once a day would not be necessary and could increase the risk of side effects or toxicity. Therefore, the correct answer is to administer phenobarbital once a day.