In the event of circuit rupture, what is the first action to take?

When faced with a circuit rupture in ECMO, the most immediate and critical first action to take is to clamp on either side of the circuit disruption. This step is vital because it helps to quickly stop blood loss and prevents air from entering the circuit, which could compromise patient safety. Clamping the circuit effectively isolates the section affected by the rupture, allowing for stabilization of the ECMO system and continuous support for the patient while further actions are planned.

After clamping, additional actions can be taken, such as calling for help or preparing for a circuit exchange, but these should follow the rapid response of securing the circuit to minimize any detrimental effects on the patient's hemodynamics and oxygenation. Addressing the rupture immediately helps maintain the integrity of the ECMO support as further interventions are organized.