Editing Atrial flutter (section)

====Rate-related====
Rapid heart rates may produce significant symptoms in patients with pre-existing heart disease and can lead to [[ischemia|inadequate blood flow to the heart muscle]] and even [[myocardial infarction|a heart attack]].<ref name="Sawhney2009"/>

In rare situations, atrial flutter associated with a fast heart rate persists for an extended period of time without being corrected to a normal heart rhythm and leads to a [[tachycardia-induced cardiomyopathy]].<ref name="Sawhney2009"/> Even in individuals with a normal heart, if the heart beats too quickly for a prolonged period of time, this can lead to ventricular decompensation and heart failure.{{citation needed|date=February 2021}}