Correct Answer: A

Rationale: The correct answer is to instruct the client to avoid salt substitutes. Lisinopril, an ACE inhibitor, can lead to hyperkalemia, so it is essential to avoid salt substitutes containing potassium, which can further increase potassium levels in the body. This instruction aims to prevent potential adverse effects and ensure the client's safety while taking Lisinopril.

Correct Answer: A

Rationale: Bradycardia is a common sign of Digoxin toxicity. Digoxin, a cardiac glycoside, can lead to toxic effects such as bradycardia, which is a slow heart rate. Therefore, the nurse should closely monitor the client's heart rate for any significant decreases, as this could indicate Digoxin toxicity and prompt further intervention.

Correct Answer: A

Rationale: The correct answer is to instruct the client to avoid salt substitutes. Lisinopril, an ACE inhibitor, can lead to hyperkalemia, so it's essential to avoid salt substitutes that may contain potassium which can further elevate potassium levels.

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: C

Rationale: Ulcerations in the mouth, tongue, or throat are often the first signs of methotrexate toxicity and should be reported to the provider immediately.