I didn't learn this today, but I learned it on the job:
CPR is a lot easier if there's more than 1 person that knows how to do it on site. (It happened to be a "Senior Living Community" in Fanta Se, with an Emergency Pull in the bathroom.) There was a Nurse/Paramedic there, that was way more qualified than a retired Industrial Engineer working as an HHA (Home Health Aide) However, it takes a while for the Ambulance to show up, especially when the apartments are set up as apartments, and navigating the parking lot in a Wheel Chair Van is about as easy as moving a shopping cart around a bodega.
So, you get tired, and it really helps to have someone to tag out, not to mention check the patient's vitals, and condition (After they passed out) in between doing chest compressions. It's an Emergency, and if you could plan ahead well enough to have a Nurse Paramedic on hand to assist with the patient, you could probably avoid the emergency in the first place, but if you're lucky enough to, it really helps a lot.
Okay, I hated those Apartments, and how they set up Wheelchair Access, let alone Fire, and Ambulance access really bothered me, because it was purpose built for the purpose. You'd thing the City Planners would plan for the eventuality of one of those old people having a myocardial infarction, slipping, and breaking a hip in the wheelchair accessible bathroom, or falling asleep with a lit cigaretee, and an oxygen tank (True story) so the Fire Department has to show up.
FFS, they had 1 Job! I think I'm a little grumpy this morning.
Oh yeah, and the Emergency Pull didn't just light up a light by the door, and a Light in the Nurse's Office in the Senior Center. It also automatically alerted Senior Services. So that helped, too. The one time I didn't have to say "You, call 9-11" before there was anyone else, who wasn't having a medical emergency. I guess that was nice, too. They got a DNR after that, and I couldn't work with them again, after that. IDK if I could handle that situation again, knowing they have a DNR. What do you do in that situation?