Roughly two months after my big cardiac event, I started noticing irregular heart beats, but only at night. I mentioned this to my Cardiologist - Dr Henjum in Placerville, and he recommended I purchase an iPhone gadget that does a complete EKG in 30 seconds. What a great use for a smartphone!
There are actually several choices out there, my research showed that the AliveCor Kardia Mobile was the most desirable for me as I didn't want to wear wires 24/7 (would be pretty embarrassing when out with friends or visiting customers), but I wanted to be able to take an EKG at the moment when I felt something was wrong without having to wait until the next morning to see the doctor.
You also can purchase this handy little device on Amazon here :
It is $99, and comes with basic service, which allows you to email your last EKG to your cardiologist. If you opt for more, they have a premium service that provides a monthly summary to your cardiologist along with unlimited EKG storage. This would help detect trends over time and help your doctor gauge your progress.
I bought one, and am waiting for it to arrive. Even for people who haven't had cardiac events, I think this is a wise investment as it could help detect a stroke or heart attack right away. Many people just think it will go away and die unnecessarily as they didn't get needed treatment in time; this would remove the guess factor. ER treatment could also start early if the patient comes in with an EKG on his or her phone, showing the immediate need for care.