Which complication should be closely monitored in an ARDS patient due to potential renal failure?

In patients with Acute Respiratory Distress Syndrome (ARDS), monitoring urine output is critical due to the risk of renal failure. ARDS can lead to a cascade of complications, including the development of acute kidney injury (AKI). This is often a result of decreased perfusion to the kidneys due to hypoxia, low blood pressure, or sepsis, which can occur in severe respiratory distress.

Urine output serves as an important indicator of renal function. A significant decrease in urine output can suggest that the kidneys are not filtering blood effectively, which may prompt the need for further interventions. Close monitoring allows for early detection and management of potential renal failure, ensuring timely intervention can prevent further deterioration of the patient's condition.

While low blood pressure can influence kidney function and is an important clinical parameter, the direct relationship between urine output and renal failure makes it a more immediate measure of kidney health in an ARDS patient. Serum glucose and hemoglobin levels are also important, but they are not as directly linked to monitoring renal function in this context. Therefore, urine output stands out as the most relevant factor to monitor for complications related to renal health in patients experiencing ARDS.