The mouth-to-bag resuscitator during standard anaesthesia induction in apnoeic patients

Reduction of gastric inflation by use of a pressure relief valve connected to an acoustic expiration control device during mouth-to-mask ventilation of a manikin model of an unprotected airway

“…Flow limiting reservoir bag systems have been described in other study settings before as built-in safety features 14 15. However, these systems require space and—compared with pocket mask designed systems such as ours—are not suitable for lay rescuers as it is not convenient to carry them around.…”