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1 results

  • Computed tomography scanning of implanted hypoglossal nerve stimulators and approach to device malfunction: case series

  • M J Urban, A Calder, M Jhaveri, P LoSavio
  • Journal:
    The Journal of Laryngology & Otology / Volume 137 / Issue 2 / February 2023
    Published online by Cambridge University Press:
    13 December 2021, pp. 231-236
    Print publication:
    February 2023
  • Objective

    Serious device-related complications for hypoglossal nerve stimulators are rare, but surgeons should implement a prompt and systematic approach to quickly troubleshoot a non-functioning device.

    Method

    Records were queried at a single academic tertiary referral centre between January 2019 and June 2021.

    Results

    The authors present four cases of non-functioning hypoglossal nerve stimulator devices: one case in which migration of the stimulation lead required a revision implantation, one in which the implantable pulse generator was found to be non-functional intra-operatively, one case of an intramuscular sensory lead tract causing pain and one case of implantable pulse generator failure that was probably triggered by implantable cardiac device discharge. In this study, computed tomography imaging was critical to the diagnosis for the first and third cases.

    Conclusion

    Given the limited complication reporting available for hypoglossal nerve stimulators, these cases highlight management and unique imaging findings. The authors present an algorithm to work-up non-functioning hypoglossal nerve stimulator devices.