I have bradycardia but had fluttering in my stomach, checked my pulse it ws143, went to the E R was admitted overnight being monitored. was dxed as possible atrial flutters. my pulse rate was in the 30's on the 25 mgs now high 40's or low 50's, but that is about normal for me. I am not sure the flutters were not caused by gas from IBS, was having a bad IBS day and read on several boards they get racing heart beats from several digestive problems, reflux, IBS, chrons etc. I had one Dr. tell me if I start racing again take one 25 mg Metoprolol if the racing does not stop in 10 minuets go to the E R the other said same dosage but give the racing 2 hours to stop or slow down. Slightly confused here and wondering how fast rates are for people on this board and what they do when they get them? This is new to me>