A nurse is reinforcing discharge instructions with a client who has hepatitis

Choice A reason: The correct answer is a because hyperkalemia, or high serum potassium levels, often leads to peaked T waves on an ECG. A reduction of T wave amplitude indicates that potassium levels are decreasing and the medication is effective.

Choice B reason: P wave duration is not typically affected by hyperkalemia. Changes in the P wave are more commonly associated with atrial abnormalities, not electrolyte imbalances.

Choice C reason: Widening of the QRS complex is a sign of severe hyperkalemia and indicates worsening of the condition. The goal of treatment is to prevent such changes, not to observe them as an indication of effectiveness.

Choice D reason: Restoration of QRS complex amplitude is not a specific indicator of hyperkalemia or its treatment. The focus should be on changes in the T wave and other signs of electrolyte normalization.

Choice A reason: Limiting fluid intake is not an appropriate intervention for labyrinthitis. Adequate hydration is important for overall health and should be maintained.

Choice B reason: The correct answer is b because labyrinthitis can affect the vestibular system, leading to dizziness and vertigo. Monitoring the client’s cardinal fields of vision helps assess for nystagmus, which is a common symptom of vestibular disorders.

Choice C reason: Encouraging ambulation is not advisable for clients with labyrinthitis, as it can increase the risk of falls and injury due to dizziness and imbalance.

Choice D reason: Ensuring the room is brightly lit is not necessary for the management of labyrinthitis and may not provide any therapeutic benefit.