For a non-trauma patient who is pulseless and apneic, what should be your next step after unsuccessful assisted ventilation?

In the scenario of a non-trauma patient who is pulseless and apneic after unsuccessful assisted ventilation, the next appropriate step is to check for an airway obstruction. This is crucial because an airway obstruction can prevent the delivery of air to the lungs, making effective ventilation impossible. If the airway is blocked, it must be cleared to ensure that subsequent attempts at ventilation can be successful.

Addressing an airway obstruction is a fundamental aspect of emergency care. Techniques such as checking for visible obstructions and utilizing maneuvers like the Heimlich maneuver or suctioning may be employed. Once the airway is confirmed to be clear, attempts at assisted ventilation can resume with a higher likelihood of success.

While other options such as continuing chest compressions or trying an alternative method to ventilate can be considered in certain contexts, ensuring the airway is clear takes precedence in this situation. If ventilation is being compromised due to an obstruction, continuing chest compressions or repositioning the head will not resolve the underlying issue of the blocked airway. Thus, verifying and ensuring an unobstructed airway is the immediate priority.