Zapping nerves to calm a chaotic heart

This study tested whether sending mild electrical signals under the skin of the chest could help control atrial fibrillation (AFib) in people whose symptoms weren't helped by standard medications. 46 adults with symptomatic AFib had a small wire implanted under their skin; half received the electrical stimulation for two weeks while the other half did not. Researchers compared the two groups to see if the stimulation reduced how often AFib occurred and improved patients' quality of life.