Movement disorders : official journal of the Movement Disorder Society · 2019
Sensitivity and specificity of different hand positions to assess upper limb rest tremor.
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Wilken Miguel, Bruno Verónica, Rossi Malco, Ameghino Lucía, Deuschl Günther, Merello Marcelo
Аннотация
BACKGROUND: Hand position for rest tremor evaluation in PD is not standardized. We evaluated the sensitivity and specificity of different hand positions commonly used to evaluate rest tremor.
METHODS: Twenty patients with PD and rest tremor were included as cases and 20 patients with essential tremor without rest tremor as controls. Video and accelerometric recordings were conducted in semiprone, completely prone, and with hands hanging down from armrest positions. Three movement disorder specialists rated tremor in each different position using Movement Disorder Society UPDRS items 3.17 and 3.18.
RESULTS: Hands hanging showed the highest amplitude (P = 0.004) and constancy (P = 0.015) scores. Sensitivity and specificity analysis for each position showed the following sensitivity/specificity results: semiprone, 95%/80%; completely prone, 85%/98.33%; and hands hanging, 96.66%/63.33%, respectively.
CONCLUSIONS: The hands-hanging position was shown to be the most suitable for evaluating rest tremor amplitude in PD, whereas the completely prone position proved to be more specific to detect rest tremor. The preferred hand position would depend on the purpose of the examination. © 2019 International Parkinson and Movement Disorder Society.
METHODS: Twenty patients with PD and rest tremor were included as cases and 20 patients with essential tremor without rest tremor as controls. Video and accelerometric recordings were conducted in semiprone, completely prone, and with hands hanging down from armrest positions. Three movement disorder specialists rated tremor in each different position using Movement Disorder Society UPDRS items 3.17 and 3.18.
RESULTS: Hands hanging showed the highest amplitude (P = 0.004) and constancy (P = 0.015) scores. Sensitivity and specificity analysis for each position showed the following sensitivity/specificity results: semiprone, 95%/80%; completely prone, 85%/98.33%; and hands hanging, 96.66%/63.33%, respectively.
CONCLUSIONS: The hands-hanging position was shown to be the most suitable for evaluating rest tremor amplitude in PD, whereas the completely prone position proved to be more specific to detect rest tremor. The preferred hand position would depend on the purpose of the examination. © 2019 International Parkinson and Movement Disorder Society.