What is the typical objective when increasing FDO2 in ECMO?

Increasing the fractions of inspired oxygen (FDO2) in ECMO is primarily aimed at enhancing oxygenation levels in patients. When the oxygenation in the body is inadequate, typically due to severe respiratory failure or compromised lung function, increasing FDO2 helps to elevate the amount of oxygen delivered to the bloodstream. This is particularly important in ECMO, where the system is designed to take over the oxygenation process when the lungs are unable to fulfill this function adequately.

By increasing FDO2, healthcare providers can improve the patient's oxygen saturation and ensure that the tissues and organs receive sufficient oxygen to maintain their metabolic processes. This adjustment is critical, especially in scenarios where lung function may be severely impaired or when there's an urgency to correct hypoxia.

The other options relate to different aspects of patient management that are not directly achieved through adjusting FDO2. Lowering arterial blood pressure or optimizing fluid management does not directly involve changes in oxygen delivery. While minimizing blood transfusions is important for patient safety and resource management, it does not relate to the specific objective of increasing oxygen levels in the blood through ECMO.