UC Irvine

In response to ventilator shortages experienced during the early months of the COVID-19 pandemic, we set out to develop a ventilator that leverages existing off-the-shelf equipment and supplies. Under the assumption that unused continuous positive airway pressure machines were relatively available, we focused on modifying a commercially available continuous positive airway pressure device to achieve a clinically useful level of peak inspiratory pressure. Here, we present detailed instructions, schematics, and code on converting a ResMed S9 AutoSetTM CPAP machine into an emergency resuscitator, and demonstrate its ability to achieve a peak inspiratory pressure of 40 cm H2O.