In the province in Ontario, where we have a few density populated communities often surrounded by large stretches of wilderness, folks are transported by helicopter in emergencies:
* https://en.wikipedia.org/wiki/Air_ambulance
* https://en.wikipedia.org/wiki/Air_medical_services
* https://sunnybrook.ca/content/?page=rooftop-helipad
If you look at the list of heliports in the province, you'll see quite a number of them are at hospitals:
* https://en.wikipedia.org/wiki/Category:Heliports_in_Ontario
Including ones, like St. Mike's and Sick Kids, in high density areas where they're often at the top of high-rise towers:
* https://www.youtube.com/watch?v=-OtDwkg-jGI
There are also non-emergency patient transportation services:
https://www.washingtonpost.com/business/economy/why-the-flig...
Of course the point of all the above is call 911 (or the local emergency number) ASAP, the faster you can get experts involved the better.
"Dr. Mark Forrest knew he had to act fast to save the life of a man he watched go into cardiac arrest after a motorcycle accident — so he opened up the man's chest right there on the road and brought him back from the dead."
https://www.cbc.ca/news/canada/british-columbia/doctor-who-s...
The nearest hospital in rural areas is guaranteed to not be even a level II trauma center. So it takes 30 minutes for an ambulance to get on-scene, then maybe it's an hour drive to a trauma center (optimistic), or they're going to need to get a helicopter, which can easily be another 40 minutes of waiting.
That urban EMS crew might be shooting to load-and-go with the patient inside of ten minutes. That means even with 20-min response time they can deliver the patient to a trauma center within an hour. Out in the boondocks, the golden hour is laughable.
https://en.wikipedia.org/wiki/Golden_hour_(medicine)