The impact of skull thickness on pediatric stereoencephalography electrode implantation and technical considerations
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Charles Shor Center for Epilepsy, Cleveland Clinic, Cleveland, Ohio
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OBJECTIVE
One consideration in pediatric stereoencephalography (SEEG) is decreased skull thicknesses compared with adults, which may limit traditional bolt-based anchoring of electrodes. The authors aimed to investigate the safety profile, complication rates, and technical adaptations of placing SEEG electrodes in pediatric patients.
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The authors retrospectively reviewed all patients aged 12 years or younger at the time of SEEG implantation at their institution. Postimplantation CT scans were used to measure skull thickness at the entry point of each SEEG lead. Postimplantation lead accuracy was also assessed.
RESULTS
综述了53例。中位数skull thickness was 4.1 (interquartile range [IQR] 3.15–5.2) mm. There were 5 total complications: 1 retained bolt fragment, 3 asymptomatic subdural hematomas, and 1 asymptomatic intracranial hemorrhage. Median radial error from the lead target was 3.5 (IQR 2.24–5.25) mm. Linear regression analysis revealed that increasing skull thickness decreased the deviation from the intended target, implying an improved accuracy to target at thicker skull entry points; this trended towards improved accuracy, but did not achieve statistical significance (p = 0.54).
CONCLUSIONS
This study found a 1.9% hardware complication rate and a 9.4% asymptomatic hemorrhage rate. Suturing electrodes to the scalp may represent a reasonable option if there are concerns of young age or a thin skull. These data indicate that invasive SEEG evaluation is safe among patients 12 years old or younger.
ABBREVIATIONS
ICC = interclass correlation coefficient ; ICH = intracranial hemorrhage ; IQR = interquartile range ; SAH = subarachnoid hemorrhage ; SDH = subdural hematoma ; SEEG = stereoencephalography .
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