Journal of neurosurgical sciences · 2021
Prospective analysis of gross and fine electrode position and motor manifestations after STN-DBS and their correlation with electrode position.
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Alugolu Rajesh, Kolpakwar Swapnil, Mudumba Vijayasaradhi, Arora Abhishek, Kandadai Rukmini, Borgohain Rupam
Аннотация
BACKGROUND: Deep brain stimulation (DBS) has been proven to be a safe, reversible, cost-effective procedure for treatment of Parkinson's disease. Final electrode position remains a significant factor determining the outcomes of subthalamic nucleus DBS (STN-DBS). This study aims to analyze the final lead position in three-dimensional plane and its effect on gross and fine motor outcomes in cases of advanced Parkinson's disease operated for STN-DBS.
METHODS: Patients who underwent bilateral STN-DBS were prospectively followed for improvement in gross motor outcomes at 6 months. Improvement in dysgraphia was analyzed by Fahn-Tolosa-Marin Tremor Rating Scale Part B Score. Postoperative outcomes were correlated with final electrode position.
RESULTS: A total of 64 Patients (128 leads) were analyzed. Patients who were less than 65 years of age at time of surgery had more significant reduction in UPDRS III (P=0.02). Cases with deviation of left x less than 3 mm had significant reduction in UPDRS III (P=0.05) and speech sub-scores (P=0.05). Deviation less than 2 mm in left x was associated with reduction in gait sub-scores (P=0.04). Optimal placement of right y electrode was associated with reduction in UPDRS III (P=0.02). Significant reduction in Fahn-Tolosa-Marin Tremor Rating Scale Part B Score was noted after DBS (P=0.001).
CONCLUSIONS: Subthalamic nucleus DBS thus results in significantly improved functional outcome particularly in patients with age less than 65 years. Accurate final electrode position is associated with maximum clinical benefit and improvement in dysgraphia.
METHODS: Patients who underwent bilateral STN-DBS were prospectively followed for improvement in gross motor outcomes at 6 months. Improvement in dysgraphia was analyzed by Fahn-Tolosa-Marin Tremor Rating Scale Part B Score. Postoperative outcomes were correlated with final electrode position.
RESULTS: A total of 64 Patients (128 leads) were analyzed. Patients who were less than 65 years of age at time of surgery had more significant reduction in UPDRS III (P=0.02). Cases with deviation of left x less than 3 mm had significant reduction in UPDRS III (P=0.05) and speech sub-scores (P=0.05). Deviation less than 2 mm in left x was associated with reduction in gait sub-scores (P=0.04). Optimal placement of right y electrode was associated with reduction in UPDRS III (P=0.02). Significant reduction in Fahn-Tolosa-Marin Tremor Rating Scale Part B Score was noted after DBS (P=0.001).
CONCLUSIONS: Subthalamic nucleus DBS thus results in significantly improved functional outcome particularly in patients with age less than 65 years. Accurate final electrode position is associated with maximum clinical benefit and improvement in dysgraphia.