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Journal of the Korean Academy of Rehabilitation Medicine 1993;17(1):70-75.
Electrophysiologic evaluation of the hypotonic or floppy infant.
Park, Chang Il , Park, Eun Sook , Song, Ju Won
Department of Rehabilitation Medicine, Yonsei University College of Medicine
근긴장저하를 보인 영유아의 전기진단학적 검사소견
박창일, 박은숙, 송주원
연세대학교 의과대학 재활의학교실

Congenital hypotonia is a symptom that may have a number of causes.

Determining these causes can tax the most astute physician. By using a few clinical criteria, congenital hypotonia can be divided into broad categories.

There is controversy over the usefulness of electromyography (EMG) in the examination of hypotonic infants. However in this study, the EMG diagnosis was identical to that obtained by muscle biopsy in 72.7% of cases in which biopsy was done. Therefore electromyography is a sensitive and noninvasive diagnostic tool of congenital hypotonia.

Key Words: Hypotonia, Floppy infant, EMG, Muscle biopsy


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