Which condition is indicated by an abnormal heart rhythm on an EKG?

An abnormal heart rhythm, often referred to as an arrhythmia, can manifest in various forms on an EKG. Atrial flutter is a specific type of arrhythmia characterized by rapid and organized electrical activity in the atria, leading to a distinct sawtooth pattern visible on the EKG. This condition reflects an abnormal rhythm due to the disorganized firing of impulses in the atria.

Bradycardia, which is defined as a slower than normal heart rate, can also be identified on an EKG as a prolonged R-R interval. Although bradycardia itself indicates a slower rhythmic pace rather than an erratic rhythm, it is still considered an abnormal heart rhythm and indicates a potential issue with the heart's electrical conduction system.

By recognizing that both atrial flutter and bradycardia are manifestations of abnormal heart rhythms, the correct answer reflects a broader understanding of arrhythmias detected through EKG. Thus, both conditions are associated with abnormal rhythms, validating the answer that includes both bradycardia and atrial flutter.