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Table 6 Summary of adverse events of prolonged follow-up of ONS for chronic migraine

From: Long-term outcomes of occipital nerve stimulation for chronic migraine: a cohort of 53 patients

  Adverse event Surgical intervention Medical management Total events
Hardware related Lead migration 0 0 0
Lead fracture 0 0 0
Electrode erosion 3 (5.7 %) 0 3 (5.7 %)
ONS system revision 10 (18.9 %) 0 10 (18.9 %)
 Change to rechargeable system 9 (17.0 %)
 Secondary to lead tethering 1 (1.9 %)
Explantation
(Due to efficacy)
5 (9.4 %) 0 5 (9.4 %)
Battery depletion:
(Failure in under one year)
4 (7.5 %) 0 4 (7.5 %)
Total hardware related events    22
Biological Infection 0 1 (1.9 %) 1 (1.9 %)
Pain over IPG/lead/wound sites 1 (1.9 %) 5 (9.4 %) 6 (11.3 %)
Neck stiffness 0 8 (15.1 %) 8 (15.1 %)
Allergy to surgical material 0 1 (1.9 %) 1 (1.9 %)
Wound site complication 0 2 (3.8 %) 2 (3.8 %)
Total biological related events    18
Stimulation associated Undesirable changes in stimulation 0 14 (26.4 %) 14 (26.4 %)
Total stimulator associated events    14
Total   54 events (involving 26 patients)   
  1. IPG implantable pulse generator, IV intravenous, ONS Occipital nerve stimulator