Feenstra, N. (Nasjara) (2019) Patients with pulsatile tinnitus: using transcanal sound recording to objectify tinnitus and the audiogram as a predictor. thesis, Medicine.
Full text available on request.Abstract
Pulsatile tinnitus is a particular form of tinnitus characterized by a pulse-synchronous sound which originates from vascular structures located in the cranium, head and neck area and thoracic cavity. The differential diagnosis varies from vascular anomalies to systemic causes. Pulsatile tinnitus is considered objective when the examiner can detect the pulsatile sound. To objectify this type of tinnitus, the recently introduced method of transcanal sound recording can be used. Objective tinnitus is known to have a higher chance of finding an explanatory cause. To predict the chances of finding an objective tinnitus, the sound thresholds in the low frequencies of the audiogram should be considered. We included 88 patients who underwent transcanal sound recording and one or more diagnostic modalities. Audiograms of 85 patients were analysed using the Mann Whitney-U test and univariate logistic regression. A strong trend towards significance has been found in air conduction at 250 and 500 Hz and bone conduction at 500 Hz. Sensitivity of the transcanal sound recording on finding a diagnosis is established at 68% and the specificity at 89%. In conclusion, in patients with an objective tinnitus the chance of finding an explanatory aetiology is higher compared to the subjective group. The found diagnoses in our study population are very heterogeneous. Objectifying pulsatile tinnitus using the transcanal sound recording has a low sensitivity on finding a diagnosis, but on the other hand a high specificity which rules in disease in case of an objective tinnitus. Even though no statistical significance was found, the use of the audiogram to predict chances of finding an objective pulsatile tinnitus shows a strong trend towards significance. Therefore, this suggests having more low-frequency hearing loss is related to subjective pulsatile tinnitus.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Faculty Supervisor and Ubbink, Ir. S.W.J.Clinical Physicist-Audiologist and Location Department of Otorhinolaryngology and Head- and Nec and University Audiology Centre, University Medical Center of Gr |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 10:42 |
| Last Modified: | 25 Jun 2020 10:42 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/407 |
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