Comparison of LEP and QST and their contribution to standard sensory diagnostic assessment of spinal lesions: a pilot study
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Christian Geber • Ulf Baumga¨rtner • Marcel Fechir • Thomas Vogt • Frank Birklein • Rolf-Detlef Treede
- چاپ و سال / کشور: 2011
Description
This study evaluates the additional use of laserevoked potentials (LEP) and quantitative sensory testing (QST) in the sensory assessment of spinal lesions. Four consecutive patients with spinal lesions verified by MRI and clinical evidence for mild spinothalamic tract involvement were included. The electrophysiological workup [somatosensory evoked potentials (SEP) and LEP] was compared to QST. Electrophysiology and QST were reassessed after about 6 months. LEP detected impaired spinothalamic tract function in 7/8 examinations. QST pointed to spinothalamic tract lesions by loss of thermal function (3/8); most frequent positive sensory signs (3/8) were paradoxical heat sensations. LEP and QST results were concordant in 6/8 examinations. SEPs were abnormal in 2/8 examinations. Congruent results between SEP and both LEP and QST were obtained in 3/8 examinations. LEP detected more deficits than any single QST parameter or their combination but additional QST allows the detection of positive sensory signs. The diagnostic gain of SEP was limited.
Neurol Sci (2011) 32:401–410 DOI 10.1007/s10072-011-0476-9 Received: 6 November 2009 / Accepted: 4 January 2011 / Published online: 4 February 2011
