Many research papers, including CPR-2 and CPR-3, show that supgraglottic airway (SGA) devices have unique properties that set them apart from bag-valve-mask (BVM) devices and tracheal intubation (TI).
To better acknowledge these differences and motivate fellow researchers to specifically assess the impact of SGA devices, we recently published a viewpoint in Healthcare (MDPI): Suppan, L.; Fehlmann, C.A.; Stuby, L.; Suppan, M. The Importance of Acknowledging an Intermediate Category of Airway Management Devices in the Prehospital Setting. Healthcare 2022, 10, 961. https://doi.org/10.3390/healthcare10050961