[Hearing impairment in senile dementia of Alzheimer's type]. 2003

Ning-yu Wang, and Hui-jie Yang, and Jin-fei Su, and Feng Kong, and Ming-xia Zhang, and Bo Yan, and Hui-qing Dong, and Xin-qing Zhang, and Jian-ping Jia, and De-min Han
Department of Otorhinolaryngology, Capital University of Medical Sciences, Beijing 100053, China. wny@sohu.com

OBJECTIVE To evaluate the pure tone hearing threshold and word recognition score of senile dementia of the Alzheimer's disease (AD) patients, and to analyze the relationship between hearing loss and the cognition impairment. METHODS Pure tone audiometry, word recognition score (WRS), acoustic immittance and auditory brainstem response (ABR) are used to evaluate the auditory function of 43 patients with AD and 50 subjects of the control group. The confounding factors are controlled. RESULTS The average age of 43 dementia patients was 72.7 +/- 6.4, and 69.7% was female. Bilateral hearing thresholds are similar in all subjects. All indices but Mini-mental scale of equastionnaire (MMSE) of patients and control group were not statistically different. There was no significant difference in pure tone audiometry (PTA), PTA2 (dB HL, mean +/- s) and WRS (%, mean +/- s) between the two groups (P > 0.05), therefore the hearing threshold of AD group (PTA = 26.3 +/- 8.5, PTA2 = 29.1 +/- 8.7, WRS = 85.5 +/- 15.5) is lower than that of control group (PTA = 23.2 +/- 10.6, PTA2 = 26.2 +/- 11.8, WRS = 87.6 +/- 16.8). No significant difference was found between the two groups in audiometry reliability, acoustic immittance and ABR (P < 0.05). CONCLUSIONS No significant difference was found between the peripheral hearing dysfunction of AD patients and that normal elderly people, i.e., PTA, PTA2 and WRS were not related to MMSE.

UI MeSH Term Description Entries
D008297 Male Males
D003072 Cognition Disorders Disorders characterized by disturbances in mental processes related to learning, thinking, reasoning, and judgment. Overinclusion,Disorder, Cognition,Disorders, Cognition
D005260 Female Females
D006311 Hearing Disorders Conditions that impair the transmission of auditory impulses and information from the level of the ear to the temporal cortices, including the sensorineural pathways. Distorted Hearing,Dysacusis,Paracousis,Paracusis,Hearing Disorder,Hearing, Distorted
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000544 Alzheimer Disease A degenerative disease of the BRAIN characterized by the insidious onset of DEMENTIA. Impairment of MEMORY, judgment, attention span, and problem solving skills are followed by severe APRAXIAS and a global loss of cognitive abilities. The condition primarily occurs after age 60, and is marked pathologically by severe cortical atrophy and the triad of SENILE PLAQUES; NEUROFIBRILLARY TANGLES; and NEUROPIL THREADS. (From Adams et al., Principles of Neurology, 6th ed, pp1049-57) Acute Confusional Senile Dementia,Alzheimer's Diseases,Dementia, Alzheimer Type,Dementia, Senile,Presenile Alzheimer Dementia,Senile Dementia, Alzheimer Type,Alzheimer Dementia,Alzheimer Disease, Early Onset,Alzheimer Disease, Late Onset,Alzheimer Sclerosis,Alzheimer Syndrome,Alzheimer Type Senile Dementia,Alzheimer's Disease,Alzheimer's Disease, Focal Onset,Alzheimer-Type Dementia (ATD),Dementia, Presenile,Dementia, Primary Senile Degenerative,Early Onset Alzheimer Disease,Familial Alzheimer Disease (FAD),Focal Onset Alzheimer's Disease,Late Onset Alzheimer Disease,Primary Senile Degenerative Dementia,Senile Dementia, Acute Confusional,Alzheimer Dementias,Alzheimer Disease, Familial (FAD),Alzheimer Diseases,Alzheimer Type Dementia,Alzheimer Type Dementia (ATD),Alzheimers Diseases,Dementia, Alzheimer,Dementia, Alzheimer-Type (ATD),Familial Alzheimer Diseases (FAD),Presenile Dementia,Sclerosis, Alzheimer,Senile Dementia
D001301 Audiometry, Pure-Tone Measurement of hearing based on the use of pure tones of various frequencies and intensities as auditory stimuli. Audiometry, Bekesy,Audiometry, Pure Tone,Bekesy Audiometry,Pure-Tone Audiometry
D013067 Speech Perception The process whereby an utterance is decoded into a representation in terms of linguistic units (sequences of phonetic segments which combine to form lexical and grammatical morphemes). Speech Discrimination,Discrimination, Speech,Perception, Speech
D016057 Evoked Potentials, Auditory, Brain Stem Electrical waves in the CEREBRAL CORTEX generated by BRAIN STEM structures in response to auditory click stimuli. These are found to be abnormal in many patients with CEREBELLOPONTINE ANGLE lesions, MULTIPLE SCLEROSIS, or other DEMYELINATING DISEASES. Acoustic Evoked Brain Stem Potentials,Auditory Brain Stem Evoked Responses,Brain Stem Auditory Evoked Potentials,Evoked Responses, Auditory, Brain Stem,Acoustic Evoked Brain Stem Potential,Acoustic Evoked Brainstem Potential,Acoustic Evoked Brainstem Potentials,Auditory Brain Stem Evoked Response,Auditory Brain Stem Response,Auditory Brain Stem Responses,Auditory Brainstem Evoked Response,Auditory Brainstem Evoked Responses,Auditory Brainstem Responses,Brain Stem Auditory Evoked Potential,Brainstem Auditory Evoked Potential,Brainstem Auditory Evoked Potentials,Evoked Potential, Auditory, Brainstem,Evoked Potentials, Auditory, Brainstem,Evoked Response, Auditory, Brain Stem,Evoked Response, Auditory, Brainstem,Evoked Responses, Auditory, Brainstem,Auditory Brainstem Response,Brainstem Response, Auditory,Brainstem Responses, Auditory,Response, Auditory Brainstem,Responses, Auditory Brainstem

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