OBJECTIVE: To evaluate the activities of the submental muscles using surface electromyography (sEMG) in @entity1 presenting with @entity1282 secondary to @entity2500 , and to compare the results with those in healthy volunteers. DESIGN: Retrospective study design. SETTING: A @entity1282 clinic at a tertiary care university hospital. @entity1 : Twenty-one @entity1 presenting with @entity1282 after @entity2500 were recruited into the study within 2 months of @entity64 onset. To serve as a control group, 13 healthy volunteers were enrolled. MAIN OUTCOME MEASURES: The primary sEMG parameters were swallowing onset, pretrigger duration, swallowing duration, and swallowing amplitude. Swallowing functional outcome was evaluated using the Videofluoroscopic @entity1282 Scale and the American Speech-Language-Hearing Association National Outcome Measurement System. RESULTS: @entity1 with @entity2500 demonstrated significantly delayed swallowing onset (P < .001) and shorter swallowing duration (P = .003) compared with the controls. Duration from the start of sEMG activity and actual laryngeal elevation also was delayed in the @entity1 group (P = .042). At a cut-off point of 0.13 seconds for swallowing onset, sensitivity was 85.7% and specificity was 69.2%. For swallowing duration, sensitivity was 84.6% and specificity was 66.7% with 1.05 seconds as the cut-off point. CONCLUSIONS: @entity1 with @entity2500 showed not only delayed swallowing onset and pretrigger duration, but also shorter duration of sEMG activity compared with those in healthy volunteers. Our results suggest that @entity1282 after @entity64 might be further compromised by delayed laryngeal response especially after the start of suprahyoid muscle activity, which represents impaired laryngeal protection mechanism.

Submental Muscle Activity is Delayed and Shortened During Swallowing Following XXXX .

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'patient', 'PARTICIPANTS'] @entity64 :: ('MESH:D020521', 'Disease') :: ['stroke'] @entity2500 :: ('MESH:D020244', 'Disease') :: ['MCA infarction', 'unilateral MCA infarction', 'middle cerebral artery (MCA) infarction'] @entity1282 :: ('MESH:D003680', 'Disease') :: ['Dysphagia', 'dysphagia']
@entity64 :: (MESH:D020521,Disease) :: ['Stroke']
