Final answer:
Free flow oxygen is administered through systems like a flow-inflating bag, self-inflating bag, or T-piece resuscitator, which are connected to a mask. This method is vital in emergency resuscitation and treatment of conditions like sleep apnea, utilizing CPAP devices.
Step-by-step explanation:
Free flow oxygen can be delivered reliably through devices that attach to a mask, such as a flow-inflating bag, a self-inflating bag, and a T-piece resuscitator. These devices are crucial in various medical situations, including emergency resuscitation and chronic conditions such as sleep apnea, where continuous or controlled delivery of oxygen is required. For instance, the use of Continuous Positive Airway Pressure (CPAP) devices is common for treating sleep apnea, where they help keep airways open by providing a steady flow of air through a mask covering the nose and mouth. This is different from oxygen delivery, but shares the similarity of utilizing a mask-based system. Reactive materials from aerospace technology, like those developed by NASA, have also found their way into the design of lightweight, durable masks and breathing systems used by firefighters and medical professionals.