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Masseter reflex and blink reflex abnormalities in Chiari II malformation
Author(s) -
Koehler Jürgen,
Schwarz Manfred,
Urban P.P.,
Voth Dieter,
Hölker Cordula,
Hopf Hanns Christian
Publication year - 2001
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/1097-4598(200103)24:3<425::aid-mus1017>3.0.co;2-k
Subject(s) - corneal reflex , asymptomatic , jaw jerk reflex , reflex , medicine , abnormality , brainstem , chiari malformation , triceps reflex , concomitant , anesthesia , surgery , withdrawal reflex , magnetic resonance imaging , radiology , psychiatry , syringomyelia
Masseter reflex and blink reflex were evaluated in 64 patients with a myelomeningocele and Chiari II malformation. In 46 patients, no brainstem signs or symptoms were present. Brainstem dysfunction related to Chiari II malformation occurred in 18 patients. The masseter reflex was more frequently abnormal in the symptomatic than asymptomatic patients ( P = 0.02). Although the blink reflex was similarly affected in the two groups of patients ( P > 0.1), it was very sensitive, being abnormal in 83% of symptomatic and 65% of asymptomatic patients. Concomitant abnormality of masseter reflex and the late contralateral blink reflex component (R2c) was almost exclusively found in symptomatic patients and reached the highest significance in separating the two groups ( P = 0.002). © 2001 John Wiley & Sons, Inc. Muscle Nerve 24:425–427, 2001