As we validated the R4 prototype, we noticed that some practitioners squeeze the bag of the bag valve mask ventilator very abruptly. This causes a rapid, sharp pressure rise, as opposed to a smooth, gentle pressure rise. For a newborn struggling to take its first breath, we want to inflate and expand the lungs gently and gradually.

To help encourage gentle, smooth ventilation, we have implemented a new feature in our feedback algorithm. It now provides instant feedback if the breath is too rapid/sudden. This will help healthcare workers learn, practice and reinforce all aspects of proper skill, and give them the confidence to act decisively in an emergency situation.