Certified Nephrology Nurse Certification (CNN) Practice Exam

Acute tubular necrosis (ATN) is primarily treated through supportive care and fluid management. This approach focuses on maintaining adequate renal perfusion and preventing further damage to the kidneys. Supportive care typically involves monitoring fluid balance, electrolytes, and renal function, while also addressing any underlying causes such as hypotension or dehydration.

In cases of ATN, the kidneys may not be able to filter waste products effectively, requiring careful administration of fluids to avoid both dehydration and fluid overload. Nutritional support and managing complications, such as hyperkalemia or metabolic acidosis, are essential aspects of the care strategy.

Dialysis may be considered in severe cases where the kidneys are unable to perform their function and there is a build-up of toxins in the blood; however, it is not the first line of treatment and is typically reserved for more severe instances. On the other hand, antibiotics, corticosteroids, or other specific interventions do not specifically address the core issues associated with ATN, which primarily stem from ischemia or nephrotoxicity rather than infections or inflammatory processes. This illustrates why supportive care and fluid management are the cornerstone of treatment for ATN.