Tremor and other hyperkinetic movements (New York, N.Y.)
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Tremor Other Hyperkinet Mov (N Y) · Jul 2020
Case ReportsDeep Brain Stimulation Target Selection in Co-Morbid Essential Tremor and Parkinson's Disease.
A 64-year-old man with essential tremor (ET) and Parkinson's disease (PD) presented with medically refractory, large amplitude, debilitating rest and action tremor in his extremities. ⋯ There is limited evidence to guide deep brain target selection in patients with essential tremor and Parkinson's disease. We review existing literature and propose strategies to manage tremor in these patients.
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Tremor Other Hyperkinet Mov (N Y) · Jan 2019
Case ReportsDaT Scan "Abnormality" in Hyperglycemic-Hemichorea.
Hyperglycemic-hemichorea is a well-established clinical entity which leads to signal changes on brain MRI. We are reporting a case of hyperglycemic-hemichorea where the DaT scan showed reduced uptake bilaterally. ⋯ This case highlights the importance of performing a DaT scan in the correct clinical context, as an abnormality on brain MRI can lead to false-positive DaT scan results.
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Tremor Other Hyperkinet Mov (N Y) · Jan 2018
Longitudinal Follow-up of Impedance Drift in Deep Brain Stimulation Cases.
Impedance is an integral property of neuromodulation devices that determines the current delivered to brain tissue. Long-term variability in therapeutic impedance following deep brain stimulation (DBS) has not been extensively investigated across different brain targets. The aim was to evaluate DBS impedance drift and variability over an extended postoperative period across common DBS targets. ⋯ The drift in impedance observed primarily within the first 6 months is in keeping with prior studies and is likely due to surgical micro-lesioning effects and brain parenchyma remodeling at the electrode-tissue interface, typically at values approximating 1,000 Ω. The differences in impedance trends over time in the various DBS targets may be due to underlying differences in structure and tissue composition.
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Tremor Other Hyperkinet Mov (N Y) · Jan 2017
Case ReportsNegative Myoclonus Induced by Ciprofloxacin.
Negative myoclonus is characterized by a brief sudden loss of muscle activity, and can be caused by a variety of acquired factors and epilepsy syndromes. ⋯ Several neurotoxic effects have been associated with the use of ciprofloxacin, but negative myoclonus has not been reported previously.
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Tremor Other Hyperkinet Mov (N Y) · Jan 2017
Management of Elevated Therapeutic Impedances on Deep Brain Stimulation Leads.
A 64-year-old male with a history of essential tremor with bilateral thalamic ventralis intermedius deep brain stimulation implants had elevated therapeutic impedance values despite normal lead integrity impedances and good response to stimulation. ⋯ This case emphasizes the need for clinicians to understand fundamental differences in lead integrity and therapeutic impedance while utilizing a methodical approach in treating hardware malfunction. It highlights future avenues of investigation regarding the utility of constant current DBS technology.