Which dysrhythmia occurs when impulses from many irritable foci fire in a disorganized manner?

The dysrhythmia that occurs when impulses from many irritable foci fire in a disorganized manner is atrial fibrillation. This condition is characterized by a chaotic electrical activity in the atria, where multiple ectopic foci initiate impulses independently. As a result, the atria do not contract effectively, leading to an irregular and often rapid heart rate. This disorganization creates a quivering motion instead of a coordinated contraction, which can significantly affect cardiac output and increase the risk of thromboembolism.

In contrast, ventricular fibrillation is a chaotic rhythm originating in the ventricles rather than the atria, where the ventricles quiver ineffectively due to disorganized electrical activity. Although it also involves multiple foci, the context of the question specifically pertains to disorganization within the atria.

Supraventricular tachycardia refers to a rapid heart rate originating above the ventricles due to a single ectopic focus or a reentrant circuit, resulting in a more organized rhythm compared to atrial fibrillation.

Ventricular tachycardia, while it involves either three or more consecutive ventricular beats with a rapid heart rate, typically originates from a single irritable focus in the ventricles and maintains a more organized electrical