I had my first true save the other day. I have had full arrests where we have gotten pulses back, but they never walked out of the hospital. The other day was different. It was probably due to luck, and short down time more than anything, but its still pretty cool. Call came in as 70 year old person SOB. once onscene family is screaming from upstairs "they're not breahting" We grab all our equipment, and find the FD applying AED. Pt has agonal respirations. AED advises no shock advised. CFD starts ventilating pt with BMV/o2. Hooked up our Lifepak and saw what was probably a 3rd degree Heart block, but no pulse. The rhythm was very difficult to determine, I asked about 5 other paramedics and got different opinions. The point was though that she went into PEA. Long story short, the ventilations alone brought pt back. A few minutes after ventilating pt was awake, CA+Ox4, stating she was fine and wanted to sit up. pt acted like nothing big ever happened. One cause of PEA is hypoxia, so it doesnt suprise me that it heleped, but it was still amazing to see such quick turnaround with nothing but better Oxygenation.