I have a medtronic loop recorder that is placed just under the skin, that I will wear for an undetermined length of time, to see if they can catch any irregularities that they haven't been able to catch wearing a 24hr holter monitor or the holter monitor that I've worn before for 30 days, several different times. The other monitors you have to push a button when you feel like you might be having an episode, but with this, it automatically is set to record on its own up to 3x when it detects something irregular and then I can manually record 4 events that I notice. I then have to go in 1x monthly to download the info so it can continue to monitor things and be ready to catch anything that might show up. My cardiologist feels very strongly that this will help him to treat my condition more effectively. It was done on an outpatient basis, but it is usually done only after all the other tests have been exhausted first. As far as it goes about stress, I know for me, I don't always feel stressed when I'm having palpitations, so I don't believe stress is a consistent trigger for them. I don't know what triggers them and I've come to the conclusion that I might never know. I mean, even if this recorder gives the cardiologist answers to help him improve my treatment, that doesn't necessarily mean that it will cause the palpitations to go away. It may be something I just have to learn to cope with. The best advice I can give you is to do lots of research....educating yourself goes along way towards making sure you are getting adequate treatment, ask lots of questions, but don't panic or stress over every little thing that pops up. I know it is hard, but you can literally drive yourself crazy over analyzing things. If you don't feel you are getting the answers you are looking for from your current dr....you need to seek out a second opinion. That in itself would probably give you some peace of mind. Keep talking to people on this forum. There are alot of them and they are more than willing to listen and be there for you.