Copyright &copy 1997-2010 by Fred SeneseComments & questions to fsenese@frostburg.eduLast Revised 08/17/15.URL: http://antoine.frostburg.edu/chem/senese/101/consumer/faq/why-does-alkaseltzer-fizz.shtml.
Atrial flutter symptoms can come and go, with fast heart beat episodes lasting from some hours or days. In some cases, atrial flutter happens all the time. With proper treatment, atrial flutter is rarely life threatening. Complications of atrial flutter can be serious, but they can usually be prevented with treatment.
Flutter (Definition) 1  Atrial flutter is an abnormal heart rhythm in the top of the heart in which the top of the heart beats very fast but very regularly (as opposed to atrial fibrillation which is always irregular) and can lead to a rapid heart rate and increased risk for stroke.