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Titolo:
What is the best way to assess focal slowing of the ulnar nerve?
Autore:
van Dijk, JG; Meulstee, J; Zwarts, MJ; Spaans, F;
Indirizzi:
Leiden Univ, Med Ctr, Dept Neurol & Clin Neurophysiol, Leiden, NetherlandsLeiden Univ Leiden Netherlands & Clin Neurophysiol, Leiden, Netherlands Canisius Hosp, Dept Clin Neurophysiol, Nijmegen, Netherlands Canisius Hosp Nijmegen Netherlands Neurophysiol, Nijmegen, Netherlands Univ Nijmegen, Med Ctr, Dept Clin Neurophysiol, Nijmegen, Netherlands UnivNijmegen Nijmegen Netherlands Neurophysiol, Nijmegen, Netherlands Univ Hosp Maastricht, Dept Clin Neurophysiol, Maastricht, Netherlands UnivHosp Maastricht Maastricht Netherlands ol, Maastricht, Netherlands
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 2, volume: 112, anno: 2001,
pagine: 286 - 293
SICI:
1388-2457(200102)112:2<286:WITBWT>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOTOR CONDUCTION; ELBOW; NEUROPATHY; ENTRAPMENT; LOCALIZATION;
Keywords:
ulnar neuropathy; sulcus; measurement error; nerve conduction velocity; receiver operating curve; sensitivity; specificity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: van Dijk, JG Leiden Univ, Med Ctr, Dept Neurol & Clin Neurophysiol, Leiden, Netherlands Leiden Univ Leiden Netherlands hysiol, Leiden, Netherlands
Citazione:
J.G. van Dijk et al., "What is the best way to assess focal slowing of the ulnar nerve?", CLIN NEU, 112(2), 2001, pp. 286-293

Abstract

Objective: The study assessed the influence of the length of the across elbow (AE) segment of the ulnar nerve on the true and false positive rates ofvelocity measurements: of the AE segment. Using a short AE length will increase effects of the measurement error (ME), and using a long distance will'dilute' the slowing due to the focal lesion; it is not known which lengthis optimal to detect focal slowing. Methods: A simulation was performed to assess diagnostic yield for AE lengths of 50, 100 and 150 mm, taking into account ME, variation in true velocity, and severity of the lesion. ME of latencies and distances were first determined in a healthy subject. Results: ME proved lower than in a published study. Diagnostic yield was consistently better for an AE length of 50 mm than for 100 or 150 mm. The optimum length is therefore near 50 mm. Yield increased with severity of the lesion, smaller ME, and when interindividual variation in true velocity wassmall. Judging AE on its own had a slightly better yield than comparing AEvelocity to forearm velocity, except for populations with a larger than normal spread in true conduction variability. Conclusions: The best balance between effects of ME and 'dilution' to detect focal nerve slowing is obtained at nerve lengths of about 50 mm. The need to incorporate all possible compression sites necessitates the use of a suboptimal length of about 80 mm. (C) 2001 Elsevier Science Ireland Ltd. Allrights reserved.

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Documento generato il 01/10/20 alle ore 16:18:28