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Query: UMLS:C0019693 (HIV)
 170,526 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

This article reviews published research on auditory function in HIV-infected adults, while also highlighting the need for intensified research on this topic in Africa. It begins with an introduction to the effects of HIV disease and treatment on the auditory system, and so highlights the need to put auditory function in adults with HIV or AIDS on the healthcare and research agenda in developing countries. The discussion refers to this population in regard to: published prevalence and incidence data related to auditory manifestations; most prevalent types of auditory manifestations and hearing loss; degree, configuration, and symmetry of the hearing loss; types of onset of hearing loss; and the proposed direct and indirect causes of auditory manifestations in HIV disease. Finally, the possible effects of HIV/AIDS drug treatments on the auditory system, as an indirect cause of hearing loss, are also discussed. A review of the literature revealed that auditory manifestations in adults with HIV or AIDS are heterogeneous in nature and are possibly due to various causes. Auditory presentations, including hearing loss, tinnitus and vertigo (in varied combinations) can occur with hearing loss, which includes conductive, mixed, sensorineural, and central types of hearing loss. The severity of hearing loss can range from mild to profound, occurring either unilaterally or bilaterally, with the types of onset including sudden or gradual and progressive. The varied causes of hearing loss include HIV infection or AIDS illness as a primary cause, opportunistic infections, and antiretroviral treatments. The studies discussed are mainly from developed countries where the presentation and management of HIV and AIDS can be different to that in developing countries because the context is different. This suggests a need for more research in this area since the numbers of adults living with HIV or AIDS in developing countries like South Africa is relatively high.
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PMID:HIV/AIDS and auditory function in adults: the need for intensified research in the developing world. 2586 Apr 7

A 33-year-old man developed profound sudden onset right-sided hearing loss with tinnitus and vertigo, within 24 h of pretravel rabies vaccination. There was no history of upper respiratory tract infection, systemic illness, ototoxic medication or trauma, and normal otoscopic examination. Pure tone audiograms (PTA) demonstrated right-sided sensorineural hearing loss (thresholds 90-100 dB) and normal left-sided hearing. MRI internal acoustic meatus, viral serology (hepatitis B, C, HIV and cytomegalovirus) and syphilis screen were normal. Positive Epstein-Barr virus IgG, viral capsid IgG and anticochlear antibodies (anti-HSP-70) were noted. Initial treatment involved a course of high-dose oral prednisolone and acyclovir. Repeat PTAs after 12 days of treatment showed a small improvement in hearing thresholds. Salvage intratympanic steroid injections were attempted but failed to improve hearing further. Sudden onset sensorineural hearing loss (SSNHL) is an uncommon but frightening experience for patients. This is the first report of SSNHL following rabies immunisation in an adult.
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PMID:Sudden onset unilateral sensorineural hearing loss after rabies vaccination. 2667 Aug 92

Objective: Hearing abnormalities frequently occur in Human Immunodeficiency Virus (HIV) infected individuals. Both conductive and uni- or bilateral sensorineural hearing loss (SNHL) have been described along with other audiological and vestibular symptoms such as tinnitus, vertigo and balance disturbances. While frequent middle ear infections may explain impairment of peripheral hearing abilities, the exact etiology of cochlear, and central auditory processing deficits still remains unclear. Direct effects of HIV, opportunistic infections, ototoxic side effects of antiretroviral therapy (ART), and immunologic responses to the central nervous system involving the auditory pathway have been proposed. We aim to review the audiological profile in HIV infected adults related to the effects of HIV and HAART on the inner ear structures. Methods: We present a review of the literature on cases of HIV related SNHL in adult patients and studies conducted to investigate audiometric changes in such patients. Data on presentation, diagnosis and pathophysiology were reviewed. Results: Sensorineural hearing loss in the higher frequencies is a common form of hearing loss in HIV infected individuals throughout disease progression, along with decreased otoacoustic emission (OAE) responses, increased PTA hearing thresholds and prolonged latencies for auditory brainstem responses (ABR). Conclusion: HIV affects all stages of auditory perception in a way similar to accelerated aging of the auditory system. And we postulate that synaptic loss may be the first step, followed by cochlear damage and central pathology as the virus remains present in all the structures of the auditory pathway causing local inflammation and degeneration. Evaluation of hearing function among all patients diagnosed with HIV infection seems to be an accepted approach; it should include OAE testing, pure tone and speech audiometry, speech-in-noise tests and ABR measurements.
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PMID:Main Aspects of Peripheral and Central Hearing System Involvement in Unexplained HIV-Related Hearing Complaints. 3144 65


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