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.
A clearer understanding of the pathophysiology of hemorrhagic shock may be obtained by defining the process of oxygen delivery and utilization by the tissues. Total oxygen delivery (DO2 [mlO2/min per m2]) is the product of cardiac index (l/min per m2) and arterial oxygen content (CaO2 [mlO2/l blood]).