Final answer:
The primary treatment goal for a patient with severe heart failure and increased BUN and creatinine levels is to maintain cardiac output. This includes managing fluid volume and blood pressure with diuretics and other medications, supporting heart function, and monitoring for worsening conditions.
Step-by-step explanation:
The nurse is planning care for a patient with severe heart failure who has developed increased blood urea nitrogen (BUN) and creatinine levels. The primary treatment goal in the plan should be B. Maintaining cardiac output. This is essential to ensure adequate perfusion and to prevent further damage to the kidneys due to low blood flow. Managing heart failure often involves careful fluid management to avoid fluid overload, which can exacerbate heart failure and increase blood pressure. Hence, while augmenting fluid volume may be counterproductive, the use of certain diuretics can help to manage fluid volume and blood pressure, thereby supporting cardiac function.
Medications might be used to manage symptoms and improve heart function, which may include ACE inhibitors, beta-blockers, and diuretics. Diuretics themselves increase urine volume which can help to reduce the fluid overload contributing to heart failure. Additionally, lifestyle modifications and monitoring for symptoms of worsening heart failure or kidney function will be key components of the patient's care plan.