Cuff electrodes implanted on the vagus nerve become dangerously hypersensitive during MRI scans, with activation thresholds dropping below established safety limits when exposed to gradient magnetic fields and radiofrequency heating. Computer modeling revealed that the metallic cuff acts as an amplifier, concentrating electromagnetic forces that can trigger unwanted nerve firing at field strengths previously considered safe. This represents a significant clinical blind spot in medical device safety. The vagus nerve controls critical autonomic functions including heart rate, blood pressure, and digestive processes—uncontrolled stimulation could precipitate cardiac arrhythmias, blood pressure swings, or gastrointestinal distress during routine imaging. Current MRI safety protocols rely on peripheral nerve stimulation limits that assume normal tissue conductivity, but fail to account for how implanted metal devices fundamentally alter the electromagnetic environment around neural tissue. With vagus nerve stimulators increasingly used for epilepsy, depression, and inflammatory conditions, this finding demands immediate revision of imaging protocols. The research suggests patients with these devices may require specialized MRI sequences with reduced gradient strength or alternative imaging modalities to prevent potentially life-threatening autonomic disruption.