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TABLE 1: 
Patient demographic data
Patient No.Age (yr)SexAneurysm LocationRuptured (Y/N)ProcedureNPM Type
180FLICANAneurysm coilingSSEP
233FR cavemous ICANAneurysm coilingSSEP
341FBasilar trunkNAneurysm coilingSSEP, BAEP
454MLICANAneurysm coilingSSEP, EEG
540FRICANBTO s/p intracranial bypassSSEP, EEG, neuro exam
BTO and RICA occulusionSSEP, EEG, neuro exam
652FRICA ophthalmicYBTO and aneurysm coilingSSEP, EEG
759MDistal L PICAYSodium amytal testing and glue embolization of L PICASSEP, BAEP
848FMCAYBTO and RICA occlusion*SSEP, BAEP, neuro exam
952FBasilar tipYAttempted aneurysm coilingSSEP, BAEP
1081FRICANBTOSSEP, EEG, neuro exam
1180FBasilarNBTO and RVA occlusionSSEP, BAEP
1274FRICANBTO and aneurysm coilingSSEP, EEG, neuro exam
1372MR AICAYAneurysm coilingSSEP, EEG
1476FR supraclinoid ICANBTO and aneurysm coilingSSEP, BAEP, neuro exam
1576MMid-basilarNBTO and LVA occlusion†SSEP, BAEP, neuro exam
1654FR PcommNPre-op BTOEEG, neuro exam
1767FL para-ophthalmic ICANBTO and aneurysm coilingSSEP, EEG
1852FLICANBTO and aneurysm coilingSSEP, EEG, neuro exam
1941FL paraclinoidNAneurysm coilingSSEP, EEG
2052MLICANAneurysm coilingSSEP, EEG
2149FL cavernous ICANPre-op BTOSSEP, neuro exam
LICA occlusionSSEP, EEG, neuro exam
2272FR cavernous ICANBTO and RICA occlusionSSEP, EEG
2376FR MCA bifurcationNAneurysm coilingSSEP, EEG
2443MR distal vertebralNBTO and RVA occlusionSSEP, BAEP, neuro exam
2560ML para-ophthalmic ICANBTO and aneurysm coilingSSEP, EEG, neuro exam
2678FL MCA bifurcationYAttempted aneurysm coilingSSEP, EEG
2775FL distal ICAYBTO and attempted aneurysm coilingSSEP, EEG
2854MBasilar tipYAneurysm coilingSSEP, BAEP
2973FBasilar tip, Acomm, R PcommNAneurysm coilingSSEP, BAEP
3040FR MCA bifurcationYAneurysm coilingSSEP
3168FBasilar tipNAneurysm coilingSSEP, BAEP
3262FL paraclinoid ICAYAneurysm coilingSSEP, EEG
3344MR P2 segmentNSodium amytal testingSSEP, BAEP, neuro exam
Aneurysm coilingSSEP, BAEP, EEG
3469FLICAYBTO and aneurysm coilingSSEP, EEG
3551ML distal VANBTO and LVA occlusionSSEP, BAEP, neuro exam
  • Note.—Y indicates yes; N, no; NPM, neurophysiological monitoring; F, female; M, male; L, left; R, right; ICA, internal carotid artery; PICA, posterior inferior cerebellar artery; MCA, middle cerebral artery; AICA, anterior inferior cerebellar artery; Pcomm, posterior communicating artery; Acomm, anterior communicating artery; VA, vertebral artery; BTO, balloon test occlusion; s/p, status-post; pre-op, preoperative; SSEP, somatosensory evoked potential; BAEP, brain stem auditory evoked potential; neuro exam, neurologic examination.
  • * Surgical ligation of the left internal carotid artery.
  • † Basilar artery test occlusion failed for this patient; permanent left vertebral artery occlusion was performed.