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 various sizes and types of stationary oxygen concentrators, but most of them feature the following: 1  Power switch: This turns the concentrator on and off. 2  A light shows you when the unit is on. 3  Flow meter: This controls the flow rateâhow fast the oxygen is delivered through the breathing device.