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- W4290973585 abstract "Study Design Prospective observational cohort. Objectives To examine the cost-effectiveness of IntraOperative ElectroMyeloGraphy (IO-EMG) by evaluating how often an abnormal IO-EMG signal changed the surgeon’s surgical plan, or replaced a pedicle screw either intra-operatively or as a second unplanned surgery. Methods Patients undergoing instrumented posterolateral lumbar fusion were monitored with intraoperative triggered EMG’s. Pedicle screws were placed freehand from L1 to S1 by attending physicians and fellows. Concern for pedicle breach was a screw stimulation<10 mA. Results There were 145 cases with a total of 725 pedicle screws placed. Mean age was 57.8 ± 14.2 yrs, OR time was 238 ± 95 minutes, EBL was 426.8 ± 354.3cc. Mean number of surgical levels fused was 2.7 ± 1.1. 686 (95%) screws stimulated at >10 mA and 39 (5%) screws stimulated at <10 mA. All 39 screws were removed and pedicles re-examined. Intraoperative screw repositioning was necessary in 8 of 145 cases (6%). No patient required a return to the OR for screw repositioning. As a worst case cost analysis, assuming the 8 patients requiring intraoperative screw positioning would have returned to the OR at a cost of $11,798 per readmission, the per patient cost is $651 which is less than the ION per patient cost of $750. Conclusions Only 1% of the 725 lumbar pedicle screws placed in 8 of 145 cases required repositioning. Due to the infrequency of pedicle wall breaches and the cost of ION, the utility of this modality in straightforward lumbar fusions should be critically evaluated." @default.
- W4290973585 created "2022-08-13" @default.
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- W4290973585 date "2022-08-10" @default.
- W4290973585 modified "2023-10-14" @default.
- W4290973585 title "Cost-Effectiveness of Intraoperative Electromyography to Determine Adequate Screw Position" @default.
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- W4290973585 doi "https://doi.org/10.1177/21925682221107652" @default.
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