Which resuscitation device is specifically designed to deliver positive pressure breaths?

All the listed devices are indeed designed to deliver positive pressure breaths, but they each do so in slightly different contexts or applications.

The self-inflating bag is commonly used in neonatal resuscitation. It automatically re-expands after squeezing, allowing clinicians to deliver breaths with positive pressure to the newborn’s lungs without the need for an external gas source. This is particularly useful during emergencies when quick intervention is necessary.

The flow-inflating bag requires an oxygen source to function. When connected to an oxygen cylinder, it allows the healthcare provider to judge lung compliance visually, as the bag needs to be filled with gas from the external source manually. This type of bag can provide constant positive pressure ventilation and is beneficial for adjusting the pressure and flow as needed.

The T-piece resuscitator is specifically designed for delivering positive pressure breaths while also allowing for assisted ventilation. It allows for a more controlled delivery of the breath and can be helpful for providing continuous positive airway pressure (CPAP) if required.

Since all of these devices can deliver positive pressure breaths effectively and are employed during neonatal resuscitation depending on the clinical scenario, it’s accurate to say that all of them serve the purpose described in the question.