Novel Implantation Technique for Thoracoabdominal Peripheral Nerve Stimulation via a Transversus Abdominal Plane Approach for Treatment of Chronic Abdominal Pain

Christopher M Lam,1 Sarah A Keim,2 Dawood Sayed,1 Alaa Abd-Elsayed,3 Amitabh Gulati,4 Michael E Schatman,5,6 Timothy Deer,7 Usman Latif1 1Department of Anesthesiology, Pain and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS, USA; 2Department of Surgery, University of Kansas Medical Center, Kansas City, KS, USA; 3Department of Anesthesiology and Perioperative Medicine, University of Wisconsin, Madison, WI, USA; 4Department of Anesthesiology and Critical Care, Memorial Sloan Kettering Cancer Center, New York, NY, USA; 5Department of Anesthesiology, Perioperative Care, and Pain Medicine, NYU Grossman School of Medicine, New York, NY, USA; 6Department of Population Health – Division of Medical Ethics, NYU Grossman School of Medicine, New York, NY, USA; 7The Spine and Nerve Center of the Virginias, Charleston, WV, USACorrespondence: Christopher M Lam, University of Kansas Medical Center, 3901 Rainbow Boulevard, Mail Stop 1034, Kansas City, KS, 66160, USA, Tel +1-(704)-488-5665, Fax +1-913-588-3365, Email clam2@kumc.eduBackground: Chronic abdominal pain (CAP) is a common and challenging to treat condition with a global prevalence of up to 25%. Despite extensive evaluation, approximately 40% of patients with CAP have an unknown diagnosis. Medications may be ineffective, and surgery is rarely indicated. Interventional treatment including sympathetic blocks, sympathetic neurolysis, and transversus abdominal plane (TAP) blocks may be an option, but their efficacy can wane over time. Neuromodulation has emerged as an option for these patients, as there is evidence of success with dorsal column spinal cord and dorsal root ganglion (DRG) stimulation. Peripheral nerve stimulation (PNS) may be an alternative option, particularly in higher risk patients or in patients for whom neuraxial access may be unsafe or too technically challenging. Thoracoabdominal nerve peripheral nerve stimulation via a TAP approach may be more specifically targeted in comparison to dorsal column or DRG stimulation. In this short report, we detail a technique that the authors have successfully used for thoracoabdominal nerve PNS via a TAP approach for management of CAP.Methods: This article describes a novel medial to lateral ultrasound guided thoracoabdominal nerve PNS via a TAP approach technique for lead placement and implantation.Results: A medial to lateral ultrasound guided TAP approach as described to successfully implant percutaneous thoracoabdominal nerve PNS leads for management of CAP.Conclusion: The thoracoabdominal nerve PNS via a TAP approach lead placement technique noted in this report has been used as a means for management of CAP utilizing peripheral neuromodulation. Here, we present a short report detailing a potential technique for PNS utilization for management of CAP. Further studies are needed to validate the safety and efficacy of this therapy modality, although the authors have found it to be a viable management option for patients with medically refractory neuropathic CAP.Keywords: peripheral nerve stimulator, neuromodulation, neuropathic pain, ultrasound, thoracic nerves