Case Study........................................................................................................................................... 30. Synthesis of Instructional Design Research........................................................................................
Here are some technical specifications to keep in mind for CPR on the Adult when alone: 1  Attempt a 30 to 2 ratio. Thatâs 30 compressions, briefly pause and give 2 ventilations (breaths), then repeat until help arrives. 2  Try to maintain a rate of compressions at 100/min.  Try to keep interruptions of CPR to a minimum.
The engine pressure ratio (EPR) is defined to be the total pressure ratio across the engine. Using our station numbering system, EPR is the ratio of nozzle total pressure pt8 to compressor face total pressure pt2. EPR can be easily measured on an operating engine and displayed to the pilot on a cockpit dial.