Correct Answer: A

Rationale: Irinotecan is known to commonly cause diarrhea as an adverse effect due to its impact on the gastrointestinal tract. Therefore, the nurse should closely monitor the client for signs of diarrhea while receiving this treatment.

Correct Answer: B

Rationale: Levofloxacin should not be taken with dairy products because calcium can interfere with the absorption of the medication. It is recommended to take Levofloxacin 1 hour before or 2 hours after consuming dairy products to ensure optimal absorption and effectiveness of the medication.

Correct Answer: D

Rationale: Amitriptyline is known to cause orthostatic hypotension, a sudden drop in blood pressure when moving from lying down or sitting to a standing position. Monitoring for orthostatic hypotension is crucial to prevent falls and related injuries. Educating the client about moving slowly and changing positions gradually can help mitigate this adverse effect.

Correct Answer: C

Rationale: Fresh frozen plasma is the appropriate blood product for a client with an elevated aPTT as it contains various coagulation factors that can help correct coagulopathies and prevent bleeding. It is not necessary to transfuse whole blood, platelets, or packed red blood cells in this situation as they do not directly address the coagulation factor deficiencies associated with an elevated aPTT.

Correct Answer: D

Rationale: The rotavirus vaccine series is usually completed before a child's first birthday. It is given to infants in a series of doses starting at 2 months of age and must be completed by 8 months of age. This vaccine helps protect against severe diarrhea and vomiting caused by rotavirus infection, which is common in infants and young children.