Tidal volume delivery during chest compression with either an endotracheal tube or supraglottic airway in a porcine animal model
摘要
The 2023 Consensus of Science and Treatment Recommendations states that a supraglottic airway (SGA) device can be used to deliver positive pressure ventilation. However, it is unclear if a SGA can effectively be used during chest compressions. We aimed to compare tidal volume (VT) delivery during either chest compressions with sustained inflations (CC + SI) or 3:1 compression-to-ventilation (3:1 C:V) technique with SGA and endotracheal tube (ETT) using various ventilation devices: T-piece, self-inflating bag (SIB), flow-inflating bag (FIB), and NextStep™ resuscitator. Randomized crossover animal trial uses seven mixed-breed piglets (1–3 days old; 1.8–2.4 kg). Piglets were euthanized to eliminate any potential interference with gasping or spontaneous breathing and randomized to a sequence of resuscitation techniques: (1) CC + SI with T-piece, (2) CC + SI with FIB, (3) CC + SI with SIB, (4) CC + SI with NextStep™, (5) 3:1 C:V with T-piece, (6) 3:1 C:V with FIB, and (7) 3:1 C:V with SIB. Resuscitation was performed for 1 min per technique via the SGA and then ETT. Respiratory parameters were recorded. Resuscitation using an ETT and CC + SI resulted in a gain in VT, irrespective of ventilation device. In contrast, resuscitation with an ETT or SGA and 3:1 C:V resulted in a loss in VT across all ventilation devices. There was substantial leak with the SGA, regardless of the ventilation device or compression technique.
Conclusions: Using the CC + SI technique for resuscitation paired with an ETT resulted in VT gain, regardless of ventilation device. Substantial leak during chest compressions with an SGA may hinder effective VT delivery.