I have a pacemaker, in fact I am on my second.
The first required an annual check-up/inspection. The pacemaker records every heartbeat - rate and time and date. Once a year, I would go to the clinic. They would put a heavy collar on me. There was a flap that covered the device. They downloaded the data to a industrial type laptop. Took about 10 minutes. A further 20 minutes as they scrolled through the last year to look for any anomalies. Detailed scrutiny would be done later back at the office.
My latest pacemaker is bluetooth enabled (I am wired for sound). Last year I walked in to the office and before I could sit down, all data had been transferred. A quick look at the scar and I was out - 4 minutes tops.
I thought that was good service. Still, it was only annual. I could have some sort of incident the day after the check and wait 364 days before it was picked up.
Last Thursday, Royal Papworth sent me a monitor. It is plugged into the mains and sits at my bedside. Every night it downloads the data of the last 24 hours and transmits it back to them. There is an automatic scanning and then a human check. I wake up every morning to a text telling me all is clear.
One annual check to a daily check - a phenomenal improvement in service, all thanks to Covid.
Regards
Chas