Correct Answer: C

Rationale: The correct answer is C: Headache. Dabigatran, an anticoagulant, can cause headache as a potential side effect. Monitoring for headaches is crucial as it may indicate adverse effects or complications that need attention.

Correct Answer: B

Rationale: Hydrochlorothiazide is a diuretic that can lead to potassium loss, resulting in hypokalemia. Monitoring for hypokalemia is essential because it can cause various complications such as cardiac dysrhythmias. Therefore, the practical nurse should closely watch for signs and symptoms of low potassium levels in clients taking hydrochlorothiazide.

Correct Answer: A

Rationale: Digoxin, a medication commonly prescribed for heart failure, can lead to bradycardia, which is characterized by a slow heart rate. Monitoring for bradycardia is crucial to detect and manage this potential side effect early on to prevent complications such as arrhythmias or decreased cardiac output.

Correct Answer: B

Rationale: The correct instruction that the practical nurse (PN) should reinforce with a client prescribed nitrate isosorbide dinitrate is to avoid getting up quickly and to rise slowly. Nitrates can cause orthostatic hypotension, a sudden drop in blood pressure when changing positions. By rising slowly, the client can prevent the occurrence of orthostatic hypotension and its associated symptoms.

Correct Answer: A

Rationale: The most important nursing intervention before administering ampicillin to a client with a urinary tract infection is to obtain a clean-catch urine specimen. This specimen is crucial for determining the causative organism and evaluating the effectiveness of pharmacological therapy. It should be collected before starting treatment with an anti-infective agent to ensure accurate diagnosis and appropriate management of the infection.