Background and Aims:
Spinal cord stimulation (SCS) systems equipped with several available modalities of neurostimulation such as multiple waveforms, customized field shape programming, and simultaneous or sequential pulse trains are designed to provide for robust customization of treatment for chronic pain. This capability is particularly relevant given the dynamic nature of chronic pain. Recently communicated data reported a mean 5.2-point reduction in a cohort of over 200 subjects at last follow-up (mean 3-months) utilizing a recently launched SCS system (Metzger, C. et al. INS–European Chapters Meeting, 2018). Here, analysis of clinical outcomes in patients implanted with an SCS system capable of delivering multiple modalities and/or waveforms.

Methods:
This is an observational case-series of up to 35 patients conducted in Europe as part of an ongoing retrospective chart review evaluation of SCS outcomes for chronic pain (Clinicaltrials.gov identifier: NCT01550575). Patients were implanted with an SCS system (Precision Spectra WaveWriter, Boston Scientific) capable of combination therapy (either sequential or simultaneous), multiple waveforms and advanced field shapes, and waveform automation for treatment of low back and/or leg pain. Assessments collected include (but not limited to) baseline characteristics (demographics, medical history, pain diagnosis), procedural information (lead configuration, programming parameters), and pre- and post-implant pain and quality-of-life scores.

Results
To date, data analysis is currently ongoing. Results from the initial cohort of included patients will be presented.

Conclusions:
This European-based, observational case-series evaluation seeks to assess the real-world clinical outcomes of patients implanted with an SCS device capable of providing multiple neurostimulation modalities for use in the treatment of chronic pain.

CLINICAL OUTCOMES IN CHRONIC PAIN PATIENTS USING A NEW SPINAL CORD STIMULATION SYSTEM CAPABLE OF SIMULTANEOUS DELIVERY OF MULTIPLE WAVEFORMS: INITIAL REAL-WORLD EXPERIENCE IN EUROPE