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: A

Rationale: Low potassium levels can lead to Digoxin toxicity because Digoxin competes with potassium for binding sites on the sodium-potassium pump, and when potassium levels are low, there is an increased risk of Digoxin binding and toxicity.

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: C

Rationale: The correct statement to include when teaching a client about Propranolol is to avoid sudden changes in position. Propranolol, a beta-blocker, can lead to dizziness and lightheadedness, particularly when changing positions. Therefore, clients should be advised to change positions slowly to prevent falls and related injuries.

Correct Answer: D

Rationale: Patients taking Omeprazole should report black, tarry stools, diarrhea, or abdominal pain to the healthcare provider because these symptoms could indicate serious side effects associated with the medication.