Using the Accelerometers Integrated in Smartphones to Evaluate Essential Tremor.
Stereotact Funct Neurosurg
; 93(2): 94-101, 2015.
Article
em En
| MEDLINE
| ID: mdl-25720954
ABSTRACT
Background/Aims:
Evaluation of tremor constitutes a crucial step from the diagnosis to the initial treatment and follow-up of patients with essential tremor. The severity of tremor can be evaluated using clinical rating scales, accelerometry, or electrophysiology. Clinical scores are subjectively given, may be affected by intra- and interevaluator variations due to different experience, delays between consultations, and subtle changes in tremor severity. Existing medical devices are not routinely used they are expensive, time-consuming, not easily accessible. We aimed at showing that a smartphone application using the accelerometers embedded in smartphones is effective for quantifying the tremor of patients presenting with essential tremor.Methods:
We developed a free iPhone/iPod application, Itremor, and evaluated different parameters on 8 patients receiving deep brain stimulation of the ventral intermediate nucleus of the thalamus average and maximum accelerations, time above 1 g of acceleration, peak frequency, typical magnitude of tremor, for postural and action tremors, on and off stimulation.Results:
We demonstrated good correlations between the parameters measured with Itremor and clinical score in all conditions. Itremor evaluation enabled higher discriminatory power and degree of reproducibility than clinical scores.Conclusion:
Itremor can be used for routine objective evaluation of essential tremor, and may facilitate adjustment of the treatment. © 2015 S. Karger AG, Basel.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Stereotact Funct Neurosurg
Assunto da revista:
NEUROCIRURGIA
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
França