Ederson Cichaczewski1, Renato P Munhoz2, Joaquim M Maia1, Percy Nohama1, Edison M Nóvak3, Helio A Teive3. 1. Universidade Tecnológica Federal do Paraná, Curitiba, PR, Brazil. 2. Associação Paranaense dos Portadores de Parkinsonismo, Curitiba, PR, Brazil. 3. Departamento de Neurologia, Departamento de Medicina Interna, Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, PR, Brazil.
Abstract
UNLABELLED: Tremor in essential tremor (ET) and Parkinson's disease (PD) usually present specific electrophysiologic profiles, however amplitude and frequency may have wide variations. OBJECTIVE: To present the electrophysiologic findings in PD and ET. METHOD: Patients were assessed at rest, with posture and action. Seventeen patients with ET and 62 with PD were included. PD cases were clustered into three groups: predominant rest tremor; tremor with similar intensity at rest, posture and during kinetic task; and predominant kinetic tremor. RESULTS: Patients with PD presented tremors with average frequency of 5.29±1.18 Hz at rest, 5.79±1.39 Hz with posture and 6.48±1.34 Hz with the kinetic task. Tremor in ET presented with an average frequency of 5.97±1.1 Hz at rest, 6.18±1 Hz with posture and 6.53±1.2 Hz with kinetic task. Seven (41.2%) also showed rest tremor. CONCLUSION: The tremor analysis alone using the methodology described here, is not sufficient to differentiate tremor in ET and PD.
UNLABELLED: Tremor in essential tremor (ET) and Parkinson's disease (PD) usually present specific electrophysiologic profiles, however amplitude and frequency may have wide variations. OBJECTIVE: To present the electrophysiologic findings in PD and ET. METHOD:Patients were assessed at rest, with posture and action. Seventeen patients with ET and 62 with PD were included. PD cases were clustered into three groups: predominant rest tremor; tremor with similar intensity at rest, posture and during kinetic task; and predominant kinetic tremor. RESULTS:Patients with PD presented tremors with average frequency of 5.29±1.18 Hz at rest, 5.79±1.39 Hz with posture and 6.48±1.34 Hz with the kinetic task. Tremor in ET presented with an average frequency of 5.97±1.1 Hz at rest, 6.18±1 Hz with posture and 6.53±1.2 Hz with kinetic task. Seven (41.2%) also showed rest tremor. CONCLUSION: The tremor analysis alone using the methodology described here, is not sufficient to differentiate tremor in ET and PD.
Authors: Kyum Yil Kwon; Ho Sung Ryu; Hye Mi Lee; Mi Jung Kim; Hae Won Shin; Hee Kyung Park; Sooyeoun You; Young Hee Sung; Sun Ju Chung; Seong Beom Koh Journal: J Clin Neurol Date: 2018-07 Impact factor: 3.077