Correct Answer: A

Rationale: A severe adverse effect of warfarin is bleeding. Warfarin is an anticoagulant medication that works by inhibiting blood clotting factors, which can lead to an increased risk of bleeding. Excessive bleeding can occur internally or externally, and it is crucial for individuals taking warfarin to be aware of this potential complication and seek medical attention if they experience any signs of bleeding.

Correct Answer: C

Rationale: Patients taking ACE inhibitors should avoid salt substitutes as they often contain potassium, which can lead to hyperkalemia. Hyperkalemia is an elevated level of potassium in the blood that can be dangerous, especially for patients on ACE inhibitors. Therefore, it is important for the patient to avoid salt substitutes to prevent potential complications.

Correct Answer: B

Rationale: When taking Hydrochlorothiazide, a thiazide diuretic, the client is at risk for potassium loss. The nurse should advise the client to monitor their potassium levels and increase potassium intake if necessary to prevent complications associated with hypokalemia.

Correct Answer: B

Rationale: The correct answer is to 'Avoid potassium-rich foods.' Spironolactone is a potassium-sparing diuretic, and consuming foods high in potassium can lead to hyperkalemia, a potential side effect of the medication. Therefore, the client should be advised to avoid potassium-rich foods to prevent complications.

Correct Answer: A

Rationale: Angiotensin II receptor agents belong to the drug class called angiotensin II receptor blockers (ARBs). The generic names of ARBs usually end in -sartan, helping to identify this specific class of medications. Therefore, medications that end in -sartan are likely to be angiotensin II receptor agents.