Longevity of Deep Brain Stimulation in Essential Tremor: A Comparison of Omnidirectional and Directional Leads

Both omnidirectional and directional deep brain stimulation reduces tremor severity in ET patients. However, directional leads offer more stable voltage requirements and less year-to-year voltage change, particularly in the first year. The increased likelihood of significant pulse width changes in omnidirectional leads suggests that directional leads may provide more sustainable therapeutic effects through other programming parameters. Ongoing research is needed to optimize deep brain stimulation technology and programming strategies to maximize patient benefit and device longevity.