Abstract
Electromyography was performed in 10 patients 14 to 50 years after acute poliomyelitis and in 12 patients 6 to 16 years after a peripheral nerve lesion. All patients had made an almost complete recovery from initially severe paresis. In the poliomyelitis group the main finding was an increased mean action potential duration in all patients. In the patients with peripheral nerve lesions an increased frequency of spontaneous activity could be seen in 8 out of 10 and an increased mean action potential duration in 7 out of 9 patients during the initial phase. Six to 16 years later the main pathological results were a prolonged mean action potential duration (9 out of 12 patients) whilst increased spontaneous activity was detectable only in 3 of 12 patients. In two patients all EMG findings were normal.
Zusammenfassung
Zehn Patienten, die vor 14 bis 50 Jahren eine Poliomyelitis durchgemacht haben, und 12 Patienten mit einer peripheren Nervenläsion vor 6 bis 16 Jahren sind elektromyographisch untersucht worden. Alle Patienten hatten initial schwere Paresen, die weitgehend geheilt sind. Bei den Patienten mit Poliomyelitis war eine verlängerte mittlere Potentialdauer der wichtigste Befund. Bei den Patienten mit peripheren Nervenläsionen war vermehrte Spontanaktivität und eine verlängerte mittlere Potentialdauer in 8 von 10 bzw. in 7 von 9 Fällen initial gefunden worden. Bei den Nachuntersuchungen war eine verlängerte Potentialdauer ebenfalls der wichtigste Befund (9 von 12 Patienten). Vermehrte Spontanaktivität fand sich nur in 3 von 12 Fällen. Bei 2 Patienten waren alle EMG-Befunde normal.
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Lütschg, J., Ludin, H.P. Electromyographic findings in patients after recovery from peripheral nerve lesions and poliomyelitis. J Neurol 225, 25–32 (1981). https://doi.org/10.1007/BF00313458
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DOI: https://doi.org/10.1007/BF00313458