The changes to CPR over the years have been dramatic. I first learned how to preform it in the late 80's, at that time survival rate were abysmal. Now that has all changed for the better. To help understanding you need to remember that the body's circulatory system is a closed pumping system, for blood to actual flow you need to bring the system up to working pressure. In the past we never did that, we would get up to pressure and than stop. This is why you want as minimal interruptions as possible! Get the pressure up and keep it up for the blood to circulate, this is why you are performing 200 compressions. The New York website and video is good but I prefer this one from the crew in Florida , https://www.youtube.com/watch?v=4u69rGzWmcQ [url=https://www.youtube.com/watch?v=4u69rGzWmcQ][/url]

So, if the only two people in the house are the victim and the spouse, it sounds like the best option might be to unlock/open the front door, initiate a call 911 using the speakerphone (hands free), and start/continue CPR until help arrives (maybe skip the door). That stopping CPR to unpack, apply, & start the AED would do more harm than good. Is that correct?

Also, when there is no pulse, where exactly do I apply the tourniquet and hemostatic gauze??? (just kidding!!!). Especially given my fear (dread?) of using my little chainsaw, your advice is heard loud and clear.

Let me take resuscitation back even further. In 1959 I took an Advanced First Aid course, learning 'back pressure-arm lift.' In the early 60's I first heard of "external cardiac massage." the coming thing. Finally CPR - mouth to mouth with chest compressions arrived and made a real difference.