What should be performed immediately after using a suction device?

Immediately following the use of a suction device, it is essential to reassess the airway and the effectiveness of ventilation. This step is crucial because suctioning is performed to clear the airway of obstructions such as vomit, blood, or secretions that may impede breathing. After suctioning, the EMT must ensure that the airway is clear and that the patient is capable of effective ventilation. Reassessing the airway allows the EMT to determine if further suctioning is required or if additional interventions, such as positioning or supplemental oxygen, are necessary to support the patient's breathing.

In this context, the other options, while important in patient care, do not address the immediate need to confirm that the airway is clear and that the patient is breathing effectively. Checking blood pressure, documenting the procedure, or applying supplemental oxygen, although necessary steps in the overall management of the patient, should follow the immediate reassessment of the airway and ventilation status after suctioning. This reassessment is vital for ensuring the patient's safety and effectiveness of care.