I had a lady collapse in my recovery truck. I diverted off the motorway and fortunately there was a medical centre nearby. One of the Doctors attended to her and she was later o/k to carry on with her journey. On another occasion I was on the beach on holiday in Majorca when some guys pulled an elderly Gent out of the sea. We all gave him chest compressions until the lifeguards then ambulance arrived. Sadly, he never survived and it was heartbreaking to see his wife crying uncontrollably. Some things will always stay with you.
Never had the misfortune to have anything like that , but my
Mate had a customer with an elpitic fit, as the guy was in the door way, he just stepped over the man and carried on working, he quite rightly pointed out if he didn’t his boss would have been upset as how do you invoice for medical repairs
When covered by the NHS.
As for modern heart surgery, routine as fitting a turbo charger to anything with a HDI 16 engine or heater motor in a corsa/punto!