A healthcare professional (hcp) of a clinical study reported the patient did not experience stimulation when standing as reported on 21-oct-2015 to the study; paresthesia was experienced only while sitting.On (b)(6) 2015, the patient had a clinic appointment and reported unsatisfactory coverage of stimulation; the patient was unable to achieve stimulation in standing position or left leg and painful thoracic stimulation was experienced.During the clinic appointment, the device was reprogrammed which resolved the thoracic stimulation but paresthesia was still only felt in sitting position.On (b)(6) 2016 appointment, stimulation was felt only when lying on side.The battery was found to be depleted so the hcp was unable to interrogate the device.On (b)(6) 2016, after recharging the device, there was only left side stimulation.An x-ray was taken which determined the lead migrated/dislodged.A lead revision was performed on (b)(6) 2016 and the event required in-patient or prolonged hospitalization.Reprogramming was attempted at a clinic review post revision on (b)(6) 2016 but unable to get satisfactory stimulation.The manufacturing representative attended a clinic visit on (b)(6) 2016 for reprogramming of high density settings.It was noted the device was turned off 11 days after revision due to unsatisfactory stimulation.An x-ray was taken on (b)(6) 2016 showing position of lead checked at second revision showed lead migration on immediate post-operative images; lead had coiled in epidural space.On (b)(6) 2016, the lead was repositioned.The device was interrogated and reprogrammed on (b)(6) 2016.The event was ongoing and related to device or therapy but not implant procedure.
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