Meningitis resulting in hearing loss and labyrinthitis ossificans - does the causative organism matter?

2008 ◽  
Vol 9 (2) ◽  
pp. 90-96 ◽  
Author(s):  
Susan A Douglas ◽  
Halit Sanli ◽  
William P R Gibson
Keyword(s):  
Hearing Loss ◽  
Causative Organism ◽  
Labyrinthitis Ossificans ◽  
Organism Matter

Reversible hearing loss following cryptococcal meningitis: case study

2016 ◽  
Vol 130 (7) ◽  
pp. 691-695 ◽  
Author(s):  
W L Neo ◽  
N Durisala ◽  
E C Ho
Keyword(s):  
Hearing Loss ◽  
Case Report ◽  
Bacterial Meningitis ◽  
Sensorineural Hearing Loss ◽  
Cochlear Implantation ◽  
Cryptococcal Meningitis ◽  
Sudden Onset ◽  
Sensorineural Hearing ◽  
Labyrinthitis Ossificans

AbstractBackground:Sensorineural hearing loss is a recognised complication of cryptococcal meningitis. The mechanism of hearing loss in patients with cryptococcal meningitis is different from that in bacterial meningitis.Case report:An immune-competent man with cryptococcal meningitis presented with sudden onset, bilateral, severe to profound sensorineural hearing loss and vestibular dysfunction. He was initially evaluated for cochlear implantation. However, he had a significant recovery; he no longer required surgery and was able to cope without a hearing aid.Conclusion:Typically, cochlear implantation is performed with some urgency in patients with hearing loss post-bacterial meningitis, because of the risk of labyrinthitis ossificans. However, this process has not been described in patients with cryptococcal meningitis. Furthermore, patients with hearing loss associated with cryptococcal meningitis have shown varying degrees of reversibility. In this case report, hearing loss from cryptococcal meningitis is compared with that from bacterial meningitis, and the need for cochlear implantation in patients with cryptococcal meningitis is discussed.

Cochlear Implants in Pediatric Bacterial Meningitis

2008 ◽  
Vol 139 (2_suppl) ◽  
pp. P63-P63
Author(s):  
Brandon Isaacson ◽  
Kenneth H Lee ◽  
Joe W Kutz ◽  
Peter S Roland
Keyword(s):  
Hearing Loss ◽  
Bacterial Meningitis ◽  
Cochlear Implant ◽  
Tertiary Care ◽  
Performance Outcomes ◽  
Case Review ◽  
Retrospective Case ◽  
Labyrinthitis Ossificans ◽  
Cochlear Ossification ◽  
And Performance

Objective 1) To determine pediatric cochlear implant performance outcomes for hearing loss secondary to bacterial meningitis. 2) To determine if a performance difference exists in pediatric cochlear implant patients with and without labyrinthitis ossificans. Methods A retrospective case review was performed at a tertiary care multi-disciplinary cochlear implant program. 45 children were implanted from 1991 to 2006 whose hearing loss resulted from bacterial meningitis. Mode of communication, school placement and performance were reviewed. Results 21 patients(52%) were in a mainstream educational enviroment and 19 (48%) were in a special needs enviroment. 24 subjects (58%) used an auditory-verbal mode of communication, while 17 (42%) used total communication. The mean speech reception threshold was 28dB with a range from 5 to 65dB. 14 subjects (56%) had labyrinthis ossifcans, while 11 subjects (44%) did not. Conclusions The present study demonstrated that over half of our subjects developed labyrinthitis ossificans. Despite the presence of cochlear ossification, patients with bacterial meningitis-induced hearing loss can often perform in a main-stem classroom with auditory-verbal communication.

Hearing and vestibular loss in Streptococcus suis infection from swine and traditional raw pork exposure in northern Thailand

2009 ◽  
Vol 123 (8) ◽  
pp. 857-862 ◽  
Author(s):  
N Navacharoen ◽  
V Chantharochavong ◽  
C Hanprasertpong ◽  
J Kangsanarak ◽  
S Lekagul
Keyword(s):  
Hearing Loss ◽  
Past History ◽  
Tertiary Care ◽  
Heavy Drinking ◽  
Streptococcus Suis ◽  
Care Hospital ◽  
Vestibular Loss ◽  
Northern Thailand ◽  
Drinking Habits ◽  
Labyrinthitis Ossificans

AbstractObjectives:To describe a series of 40 culture-proven, Streptococcus suis infected patients, focusing on route of entry and on hearing and vestibular dysfunction.Methods:Retrospective study of patient records in a tertiary care hospital in northern Thailand, 2003–2007.Results:The majority (75 per cent) of cases were men with heavy drinking habits. A past history of the consumption of raw pork and/or pig's blood was found in 62.5 per cent of cases, whereas contact with swine products was found in 25 per cent. Thirty patients presented with sepsis, 19 with meningitis and 10 with infective endocarditis. The overall mortality rate was 20 per cent. After a mean follow up of 17 months, 73 per cent of the surviving meningitis cases had persistent sensorineural hearing loss and 50 per cent demonstrated vestibular impairment. In one patient, roentgenographic studies of the temporal bone were compatible with labyrinthitis ossificans.Conclusions:Permanent hearing loss and vestibular impairment occur frequently in persons surviving meningitis caused by Streptococcus suis.

Clinical Outcome After Cochlear Implantation in Patients With Unilateral Hearing Loss Due to Labyrinthitis Ossificans

2013 ◽  
Vol 34 (7) ◽  
pp. 1278-1283 ◽  
Author(s):  
Frederike Hassepass ◽  
Christian Schild ◽  
Antje Aschendorff ◽  
Roland Laszig ◽  
Wolfgang Maier ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Clinical Outcome ◽  
Cochlear Implantation ◽  
Unilateral Hearing Loss ◽  
Labyrinthitis Ossificans

Spontaneous recovery of profound post-meningitic hearing loss

2001 ◽  
Vol 115 (5) ◽  
pp. 412-414 ◽  
Author(s):  
R. D. Marx ◽  
S. T Baer
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Sensorineural Hearing Loss ◽  
Spontaneous Recovery ◽  
Relevant Literature ◽  
Sensorineural Hearing ◽  
The Other ◽  
Residual Hearing ◽  
Labyrinthitis Ossificans ◽  
Patient Will

The timing of insertion of a cochlear implant (CI) in post-meningitic sensorineural hearing loss is, in spite of recent advances in the understanding of the pathogenesis of the condition, still controversial. The danger of labyrinthitis ossificans allows only a little time to decide whether to implant a CI or not. On the other hand the clinician needs to be certain that no residual hearing is present and whether or not the patient will benefit from conventional amplification. A well-documented case of early spontaneous recovery of a profound post-meningitic sensorineural hearing loss in a child is presented and the relevant literature reviewed.

Fluorocitrate Neural Dystrophy of the Guinea Pig Cochlea

1975 ◽  
Vol 33 ◽  
pp. 368-369
Author(s):  
G.J. Spector ◽  
C.D. Carr ◽  
I. Kaufman Arenberg ◽  
R.H. Maisel
Keyword(s):  
Hearing Loss ◽  
Hair Cells ◽  
Sodium Phosphate ◽  
Sensory Cells ◽  
Barium Salt ◽  
Perfusion Medium ◽  
Cochlear Hair Cells ◽  
Neural Degeneration ◽  
Sodium Phosphate Buffer ◽  
Cochlear Neurons

All studies on primary neural degeneration in the cochlea have evaluated the end stages of degeneration or the indiscriminate destruction of both sensory cells and cochlear neurons. We have developed a model which selectively simulates the dystrophic changes denoting cochlear neural degeneration while sparing the cochlear hair cells. Such a model can be used to define more precisely the mechanism of presbycusis or the hearing loss in aging man.Twenty-two pigmented guinea pigs (200-250 gm) were perfused by the perilymphatic route as live preparations using fluorocitrate in various concentrations (15-250 ug/cc) and at different incubation times (5-150 minutes). The barium salt of DL fluorocitrate, (C6H4O7F)2Ba3, was reacted with 1.0N sulfuric acid to precipitate the barium as a sulfate. The perfusion medium was prepared, just prior to use, as follows: sodium phosphate buffer 0.2M, pH 7.4 = 9cc; fluorocitrate = 15-200 mg/cc; and sucrose = 0.2M.

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