In 1955, the Pizza Hut restaurant was first commenced. Its first logo featured its only mascot Pete holding the words Pizza and Hut. 1967â1999. In 1967, the chain began using a new and simplified logo featuring the now-famous red roof design (which is still used albeit in a modified form today).
Oxygen therapy can be delivered using a low flow or high flow system. All high flow systems require humidification. The type of humidification device selected will depend on the oxygen delivery system in use, and the patient's requirements. The humidifier should always be placed at a level below the patient's head.
There are two types of portable oxygen concentrators available on the market today: Continuous flow oxygen concentrators and pulse dose, or intermittent flow, oxygen concentrators. These two types of oxygen systems have very different benefits and limitations and each is best suited for a specific type of patient.