Automated external defibrillators (AED) are effective for irregular heart rhythms but not for cases of a heart beating too fast or irregularly.
Automated external defibrillators (AED) are lifesaving devices that can help in cases of irregular heart rhythms like ventricular fibrillation. They deliver a shock of electrical energy to restore the heart's normal rhythm. However, AEDs are not helpful if someone's heart is beating too fast or irregularly, as they are designed to address specific rhythm abnormalities.
https://brainly.com/question/34613474