Fiabilité de l’estimation de la verticale virtuelle après AVC

Visual vertical (VV) has been used increasingly as a routine clinical assessment to identify alteration of verticality perception as a possible cause of postural disorders after stroke. This study aims to determine whether the reliability of VV is sufficient to support a wide clinical use in neurorehabilitation for monitoring of patients with stroke.

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About VV orientation, inter- and intrarater reliability were excellent (intraclass correlation coefficient, 0.979 and 0.982). The Bland-Altman plots and the minimal detectable change revealed a difference inferior to 2° between 2 tests. The concordance between 2 assessments for the diagnosis of abnormal VV orientation was absolute for the same examiner (κ=1; P<0.05) and excellent between 2 examiners (κ=0.92; P<0.05).

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The orientation of the VV is a highly reliable criterion, which may be used both in research and in routine clinical practice.

Références bibliographiques :

Piscicelli C et al. Inter- and Intra-Rater Reliability of the Visual Vertical in Subacute Stroke. Stroke. 2015 Jul;46(7):1979-83. doi: 10.1161/STROKEAHA.115.009610.

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