Uhrentest bei Patienten mit schwerer Aphasie

Zusammenfassung

Fragestellung: Welche Leistungen zeigen Patienten mit schwerer Aphasie im Uhrentest? Methoden: Zehn Patienten mit schwerer Aphasie sollten zwei Modi des Uhrentests bewältigen: eine vorgegebene Uhr kopieren (Copy condition) und eine Uhr stellen durch Einzeichnen der Zeiger, wobei eine vorgegebene digitale Uhrzeit (11:10) in eine analoge Uhrzeit umgewandelt werden musste (Time setting condition). Ergebnisse: Kein Patient mit schwerer Aphasie konnte die beiden Uhrentestmodi zufriedenstellend bewältigen. Sowohl beim Kopieren als auch bei der Zeiteinstellung zeigten sich bei allen Patienten massive Schwierigkeiten exekutiver, konzeptueller, motorischer, visuospatialer und apraktischer Art, sodass die Sprachsystemstörung nur eine unter vielen Einflussfaktoren war. Schlussfolgerungen und klinische Relevanz: Der Uhrentest erfasst und erfordert viele verschiedene kognitive, motorische und perzeptuelle Leistungen. Er kann nicht hinreichend zwischen Patienten mit schwerer Aphasie und anderen schweren hirnorganischen Schädigungen differenzieren.

Summary

Objective: How do patients with severe aphasia perform in the clock test? Methods: Ten patients with severe aphasia performed the clock test in two modes: copy a given clock (copy condition) and set a clock by drawing the clock hands, where a given digital display (11:10) should be transformed into an analogue display (time setting condition). Results: Not a single patient with severe aphasia was able to master any mode of the clock test. Both copy and time conditions were severely impaired by executive, conceptual, motoric visuospatial and apraxic disorders – impairments of language system were only one of numerous influencing factors. Conclusions and clinical relevance: The clock test measures and requires for its execution so many different cognitive, motoric and perceptual functions that it cannot adequately differentiate between patients with severe aphasia and other severe brain damage.

Schlüsselwörter

Uhrentest - Aphasie - Apraxie - Exekutivfunktionen

Keywords

Clock test - aphasia - apraxia - executive functions

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