I have had irregular heartbeats for quite some time. I get palpitations and a feeling that my heart is missing beats. I get breathless and dizzy when this happens. Sometimes, the trigger is exercise, either walking or climbing stairs; other times, it occurs when at rest. I am currently taking Aripiprazole and Citalopram. The heart problem began before I started taking these medications. I was recently given a heart monitor to record episodes. I can send you pictures of the episodes for you to read if possible. I would like some answers as my local cardiology department is taking some time.