What method should be applied for ventilations when an ETT/SGA is in position during a cardiac arrest?

When performing ventilations during cardiac arrest with an endotracheal tube (ETT) or supraglottic airway (SGA) in place, the recommended practice is to provide ventilations without pauses for chest compressions. This approach is based on the principle that high-quality chest compressions are critical for maintaining blood circulation, and interruptions during compressions can reduce the effectiveness of resuscitation efforts.

By delivering ventilations continuously alongside compressions, the rescuer helps maintain a flow of oxygen while ensuring that compressions continue uninterrupted. This technique maximizes the likelihood of successful oxygenation and ventilation while also supporting the critical goal of restoring effective circulation as quickly as possible.

Other methods, such as taking pauses for ventilations or performing them only when necessary, can compromise the overall resuscitation effort and reduce the chances of a positive outcome. Therefore, the appropriate method during cardiac arrest when an airway device is in place is to provide ventilations without pauses for compressions.