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DOI: 10.1055/a-2057-0161
Quantitatives EMG – müssen zwanzig Einheiten gemessen werden oder genügen drei?
Quantitative EMG: Must 20 Motor Units be Measured or are 3 Units Sufficient?
Zusammenfassung
Fritz Buchthals Beitrag zur Elektromyographie (EMG) ist fundamental. Als eines der Fundamente der quantitativen EMG gilt aber auch, dass die Dauer der Aktionspotenziale von 20 verschiedenen motorischen Einheiten zu messen sei, um quantitativ EMG zu betreiben. Dieser Ansatz ist schon aus theoretischen Erwägungen nicht sinnvoll, nicht nur des großen damit verbundenen Aufwands wegen. Durch Messung nur weniger motorischer Einheiten, die deutlich außerhalb der Norm liegen, der „Ausreißer“, ist es hingegen häufig möglich, ohne großen Zeitaufwand und zuverlässig belastbare EMG-Befunde zu erheben.
Abstract
Fritz Buchthal’s contributions to electromyography are of fundamental value. It is widely accepted that for carrying out an adequate quantitative electromyography study, it is necessary to measure the duration of action potentials of 20 different motor units. It is not only for theoretical reasons that this approach is not reasonable. Instead, by measuring a few motor units, which are clearly outside the range of the normal, designated as “outliers”, it is possible to reach reliable electromyography findings.
Publication History
Article published online:
31 May 2023
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