Billy K. Huh, MD, PhD1, Jennifer Arthur, BBA2, William A. Hautt, BBA2, and Dave Primm, MA, ELS2. (1) Duke University Pain and Palliative Care Clinic, Durham, NC, USA, (2) Advanced Neuromodulation Systems, Plano, TX, USA
Introduction Rechargeable implantable pulse generators (R-IPGs)
experience low-level energy consumption (background drain) when not in use.
Should too much of their battery capacity be consumed while inactive, R-IPGs
may enter a reserve state or require reprogramming. Here we present the case of
a patient whose R-IPG was switched off and then restarted after an extended
time period. Methods The patient was a 32-year-old female with intractable
pain who received effective pain relief from neurostimulation using a
large-capacity R-IPG (Fig. 1). She later became pregnant but was concerned
about exposure to radio-frequency energy used to recharge her device. After
consulting her physician, the patient turned off her R-IPG for the term of her
pregnancy. Results The patient's R-IPG was restarted after 10 months
without its entering a reserve state or needing reprogramming. Paresthesia
coverage and pain relief were reestablished at prior levels. The battery
capacity of the R-IPG was estimated to have been reduced slightly during the
inactive period (Fig. 2). Conclusion The patient's therapy was resumed without incident.
The ability to easily restart R-IPGs after long periods of inactivity adds
flexibility to neurostimulation therapy.
References: none
Funding: This research was supported by Advanced Neuromodulation Systems.
William A. Hautt, BBA
Conflict of Interest Disclosure: ANS, employee