Analysis of acoustic characteristics in elderly patients with dysarthria in the anterior and posterior circulation cerebral infarction
Objective To investigate the differences in acoustic characteristics between older patients with dysarthria resulting from anterior and posterior circulation cerebral infarctions.Methods A case-control study was conducted.Sixty hospitalized older patients with dysarthria were selected and divided into two groups:the anterior circulation cerebral infarction group and the posterior circulation cerebral infarction group,each comprising 30 cases.Additionally,thirty healthy individuals aged 65 and above were included as a control group.The subjective evaluation of the patients'overall phonetic function was conducted using the GRBAS scale.Objective parameters,including fundamental frequency(F0),Jitter,Shimmer,maximum phonation time(MPT),maximum sound pressure level(SPLmax),minimum sound pressure level(SPLmin),and the dysphonia severity index(DSI),were collected using the DIVAS2.5 voice analysis system.We analyzed the acoustic characteristics across the three groups:patients with dysarthria and healthy subjects.Results The grade(G),roughness(R),breathiness(B),asthenia(A),and strain(S)scores of patients in both the anterior and posterior circulation cerebral infarction groups were significantly higher than those of the healthy control group(F=16.574,39.793,46.309,52.154,25.603;all P＜0.001).Furthermore,the roughness(R)and strain(S)of the voice in the anterior circulation cerebral infarction group were significantly elevated compared to the posterior circulation cerebral infarction group,whereas the breathiness(B),asthenia(A),and grade(G)scores in the posterior circulation cerebral infarction group were significantly higher than those in the anterior circulation cerebral infarction group(all P＜0.001).The fundamental frequency value(F0)of the voice in patients with anterior circulation cerebral infarction was significantly greater than that of both the posterior circulation cerebral infarction group and the healthy control group(F=39.050,P＜0.001).In contrast,the fundamental frequency value(F0)of patients with posterior circulation cerebral infarction was lower than that of the healthy control group(P=0.003).Additionally,the Jitter value in the anterior circulation cerebral infarction group was higher than in both the posterior circulation cerebral infarction group and the healthy control group(F=64.976,P＜0.001).The Shimmer value in the anterior circulation cerebral infarction group was lower than that in the posterior circulation cerebral infarction group but higher than that in the healthy control group(both P＜0.001).Finally,the values of MPT,SPLmin and SPL max,DSI in the anterior circulation cerebral infarction group were higher than those in the posterior circulation cerebral infarction group and lower than those in the healthy control group(F=90.406,24.003,16.164;all P＜0.001);the value of DSI in the anterior circulation cerebral infarction group was lower than in both the posterior circulation cerebral infarction group and the healthy control group(F=87.921,P＜0.001).Conclusions There are notable differences in the acoustic characteristic parameters of dysarthria resulting from injuries at various anatomical sites in older patients with cerebral infarction.In practical clinical settings,a comprehensive evaluation of dysarthria in these patients should integrate the anatomical location of the injury,subjective symptom assessment,and objective analysis of acoustic characteristics to inform precise and personalized rehabilitation strategies.
万方数据
维普
