What is the cardiac index (CI) goal when selecting a cannula for ECMO?

The cardiac index (CI) goal when selecting a cannula for ECMO is typically set to around 2.2 L/min/m². This value represents a benchmark for adequate cardiac output that can support tissue perfusion and ensure that metabolic demands are met. A CI above this threshold indicates that there is sufficient blood flow to the organs and tissues, which is crucial when a patient is supported by ECMO.

When selecting a cannula, it is important to ensure that the device can accommodate the necessary blood flow rates to achieve this cardiac index. A target CI of 2.2 L/min/m² balances the need for adequate circulation while minimizing strain on both the ECMO circuit and the patient’s hemodynamic status. Setting the goal at this level helps clinicians optimize the patient's overall cardiac function and support during ECMO therapy, thereby improving patient outcomes.