Showing papers by "Richard T. Ramsden published in 1978"
TL;DR: Patients with Meniere's disorder were tested using transtympanic electrocochleography during glycerol dehydration and the most common finding was a decrease in the negative summating potential, which appeared to be a more sensitive indicator of changes occurring in the cochlea than pure tone audiometry and speech discrimination.
Abstract: Thirteen patients with Meniere's disorder were tested using transtympanic electrocochleography during glycerol dehydration. The most common finding was a decrease in the negative summating potential and this appeared to be a more sensitive indicator of changes occurring in the cochlea than pure tone audiometry and speech discrimination. A pathophysiological explanation for this observation is offered and the possibility of using this decrease in the negative summating potential as a pointer to the prognosis of endolymphatic sac surgery is discussed.
66 citations
TL;DR: Using an otoadmittance meter the function of the middle ear was compared in patients with rheumatoid arthritis and matched controls with non-articular rheumatism and found no significant differences between the RA patients with normal or abnormal recordings as regards clinical or laboratory features or treatment.
Abstract: Using an otoadmittance meter the function of the middle ear was compared in 38 patients with rheumatoid arthritis (RA) and 30 matched controls with non-articular rheumatism. Patients with pre-existing ear disease were excluded from the study. No subjects in either group showed hearing loss on pure tone audiometry, but otoadmittance abnormalities were recorded in 16 of the RA (42%) and in 2 of the control groups (7%). The pattern of abnormality was similar in each case and indicated an increased laxity of the conducting system. The reason for this unexpected finding is unknown. There were no significant differences between the RA patients with normal or abnormal recordings as regards clinical or laboratory features or treatment.
31 citations
TL;DR: In this paper, the results of transtympanic ECochG in 70 patients with sudden sensorineural deafness were presented and compared with traditional methods of audiometry as a means of deciding whether the deafness was mainly cochlear or retrocochlear.
Abstract: The results of transtympanic ECochG in 70 patients with sudden sensorineural deafness are presented. ECochG was compared with traditional methods of audiometry as a means of deciding whether the deafness was mainly cochlear or retrocochlear. It was found to make a useful and sometimes unique contribution. ECochG gave a definite localization of the deafness in 22 out of 23 patients in whom conventional methods of audiometry had produced equivocal results and was also found to be extremely valuable in 17 patients with "dead" ears. Electrical stimulation of the cochlea may have a prognostic value in cases of sudden retrocochlear deafness. A rational approach to the treatment of sudden deafness depends on precise knowledge of the aetiology and pathology: accurate localization of the site of the lesion is a convenient first step.
9 citations