It is the least serious of all the arrhythmias.

It consists of a small change of the normal pulse, for some cells focus of the right auricle that he tries to supplant temporarily to the called nodule sinusal in the generation of electrical impulses.

The ear extrasystoles can be seen in a routine ECG. If they are not seen, but it is suspected that they are giving symptoms, a record Holter (a portable ECG that takes for 24 hours) can help to detect them.