关键词: 卒中; 吞咽障碍; 吞咽; 喉

Abstract: Objective To identify the nature of an abnormal swallowing mode of dysphagia patients afterstroke.Methods Twenty-one ischemic stroke patients undertook the videofluoroscopic swallowstudy(VFSS) by drinking 5ml 60%w/v barium. From admission to VFSS, the median was5 days(0-9). During larynx elevation, the distance of larynx antedisplacement(“y” mm) andelevation(“x” mm) in every 0.03s were recorded. The value of y/x means the antedisplacementdistance of larynx in every millimeter of larynx elevation. The locus line was drawn in thecoordinate system with y/x to be the y axis, time was the x axis.Results Total 6 patients demonstrated a special kind of abnormal swallowing mode different fromthe other patients in the 21 patients. From the lateral image of swallow, abnormal swallow modecould be identified with the characteristics of significant antedisplacement of larynx during itselevation. Between patients group with or without abnormal mode, the maximum(P =0.002) of y/xdiffered significantly. In the locus line, six lines showed biggest y/x value more than 1.5mm, whileother lines centralized in the area with the upper margin lower than 1.5mm.Conclusion There may be abnormal swallow mode of significant antedisplacement of larynx instroke patients, which was associated with the strengthened contraction of suprahyoid muscles.

Key words: Stroke; Deglutition disorders; Deglutition; Larynx