Hearing impairment natural history, complications and prognosis: Difference between revisions

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__NOTOC__
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{{Hearing impairment}}
{{Hearing impairment}}
{{AB}}
==Overview==
==Overview==
==Natural History==
Different factors contribute to prognosis of hearing loss and psychological complications associated with deafness are a big concern for physicians.
== Complications==
==Prognosis==
===Quantification of hearing loss===<!-- This section is linked from [[Cochlear implant]] -->
The '''severity of hearing loss''' is measured by the degree of loudness, as measured in [[decibel]]s, a sound must attain before being detected by an individual. Hearing loss may be ranked as mild, moderate, severe or profound. It is quite common for someone to have more than one degree of hearing loss (i.e. mild sloping to severe). The following list shows the rankings and their corresponding decibel ranges:


* Mild:
==Natural History, Complications and Prognosis==
** for adults: between 25 and 40 dB
===Natural History===
** for children: between 15 and 40 dB
65% of patients with [[Sensorineural hearing impairment|sudden idiopathic sensorineural hearing loss]] recover completely  within 14 days, independent of any type of medical or surgical treatment. There is a fundamental difference in the behavior of apical and basal [[cochlea]] losses recovery and hearing recovery is always better at low than at high frequencies.
* Moderate: between 41 and 55 dB
* Moderately severe: between 56 and 70 dB
* Severe: between 71 and 90 dB
* Profound: 90 dB or greater


The quietest sound you can hear at different frequencies is plotted on an audiogram to reflect your ability to hear at different frequencies. The range of normal human hearing (from the softest audible sound to the loudest comfortable sound) is so great that the audiogram must be plotted using a logarithmic scaleThis large normal range, and the different amounts of hearing loss at different frequencies, make it virtually impossible to accurately describe the amount of hearing loss in simple terms such as percentages or the rankings above.
===Complications===
Age-related hearing loss has been associated with<ref name="pmid332536102">{{cite journal| author=Nieman CL, Oh ES| title=Hearing Loss. | journal=Ann Intern Med | year= 2020 | volume= 173 | issue= 11 | pages= ITC81-ITC96 | pmid=33253610 | doi=10.7326/AITC202012010 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=33253610 }}</ref><ref name="pmid23337978">{{cite journal| author=Lin FR, Yaffe K, Xia J, Xue QL, Harris TB, Purchase-Helzner E | display-authors=etal| title=Hearing loss and cognitive decline in older adults. | journal=JAMA Intern Med | year= 2013 | volume= 173 | issue= 4 | pages= 293-9 | pmid=23337978 | doi=10.1001/jamainternmed.2013.1868 | pmc=3869227 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23337978  }}  [https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=&cmd=prlinks&id=23842726 Review in: Evid Based Nurs. 2014 Apr;17(2):60-1]</ref>


Measuring hearing loss in terms of a percentage is debatable in terms of effectiveness, and has been compared to measuring weight in inches. Though in specific legal situations, where decibels of loss are converted via a recognized legal formula, one can infer a standardized "percentage of hearing loss" which is suitable for legal purposes only.
*Worse [[quality of life]]
*[[Depression]]
*[[Social isolation]]
*Functional decline
*Fall risk
*Increased [[hospitalization]]
*Increase [[Health care]] use
*Accelerated [[Cognitive|Cognitive decline]]
*[[Dementia]]


Another method for determining hearing loss, is the Hearing in Noise Test (HINT). HINT technology was developed by the [http://www.hei.org/ House Ear Institute], and is intended to measure an ability to understand speech in quiet and noisy environments. Unlike pure-tone tests, where only one ear is tested at a time, HINT evaluates hearing using both ears simultaneously (binaural), as binaural hearing is essential for communication in noisy environments, and for sound localization.
===Prognosis===
The prognosis for hearing recovery for [[idiopathic]] [[Sensorineural hearing loss|SSNHL]] depends on a variety of things including the severity of [[hearing loss]], the shape of the [[audiogram]], age of onset, presence of [[vertigo]], and presence or absence of other risk factors.<ref name="pmid21606048">{{cite journal| author=Kuhn M, Heman-Ackah SE, Shaikh JA, Roehm PC| title=Sudden sensorineural hearing loss: a review of diagnosis, treatment, and prognosis. | journal=Trends Amplif | year= 2011 | volume= 15 | issue= 3 | pages= 91-105 | pmid=21606048 | doi=10.1177/1084713811408349 | pmc=4040829 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21606048  }}</ref><ref name="pmid31452421">{{cite journal| author=Huafeng Y, Hongqin W, Wenna Z, Yuan L, Peng X| title=Clinical characteristics and prognosis of elderly patients with idiopathic sudden sensorineural hearing loss. | journal=Acta Otolaryngol | year= 2019 | volume= 139 | issue= 10 | pages= 866-869 | pmid=31452421 | doi=10.1080/00016489.2019.1641218 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=31452421  }}</ref>
 
Prognosis can be predicted according to the slope of the [[audiogram]] taken at the start of hearing difficulty (low-[[frequency]] losses do better than high-[[frequency]] losses), Inflammatory markers, [[Erythrocyte sedimentation rate|erythrocyte sedimentation rates]], hearing at 8 kHz, in some cases, it depends on [[speech discrimination]] scores and spatial disorientation symptoms.<ref name="pmid889223">{{cite journal| author=Mattox DE, Simmons FB| title=Natural history of sudden sensorineural hearing loss. | journal=Ann Otol Rhinol Laryngol | year= 1977 | volume= 86 | issue= 4 Pt 1 | pages= 463-80 | pmid=889223 | doi=10.1177/000348947708600406 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=889223  }}</ref>
 
==References==
{{Reflist|2}}
 
[[Category:Geriatrics]]
[[Category:Communication disorders]]
[[Category:Audiology]]
[[Category:Otolaryngology]]
[[Category:Noise pollution]]

Latest revision as of 08:40, 6 May 2021

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Overview

Different factors contribute to prognosis of hearing loss and psychological complications associated with deafness are a big concern for physicians.

Natural History, Complications and Prognosis

Natural History

65% of patients with sudden idiopathic sensorineural hearing loss recover completely within 14 days, independent of any type of medical or surgical treatment. There is a fundamental difference in the behavior of apical and basal cochlea losses recovery and hearing recovery is always better at low than at high frequencies.

Complications

Age-related hearing loss has been associated with[1][2]

Prognosis

The prognosis for hearing recovery for idiopathic SSNHL depends on a variety of things including the severity of hearing loss, the shape of the audiogram, age of onset, presence of vertigo, and presence or absence of other risk factors.[3][4]

Prognosis can be predicted according to the slope of the audiogram taken at the start of hearing difficulty (low-frequency losses do better than high-frequency losses), Inflammatory markers, erythrocyte sedimentation rates, hearing at 8 kHz, in some cases, it depends on speech discrimination scores and spatial disorientation symptoms.[5]

References

  1. Nieman CL, Oh ES (2020). "Hearing Loss". Ann Intern Med. 173 (11): ITC81–ITC96. doi:10.7326/AITC202012010. PMID 33253610 Check |pmid= value (help).
  2. Lin FR, Yaffe K, Xia J, Xue QL, Harris TB, Purchase-Helzner E; et al. (2013). "Hearing loss and cognitive decline in older adults". JAMA Intern Med. 173 (4): 293–9. doi:10.1001/jamainternmed.2013.1868. PMC 3869227. PMID 23337978. Review in: Evid Based Nurs. 2014 Apr;17(2):60-1
  3. Kuhn M, Heman-Ackah SE, Shaikh JA, Roehm PC (2011). "Sudden sensorineural hearing loss: a review of diagnosis, treatment, and prognosis". Trends Amplif. 15 (3): 91–105. doi:10.1177/1084713811408349. PMC 4040829. PMID 21606048.
  4. Huafeng Y, Hongqin W, Wenna Z, Yuan L, Peng X (2019). "Clinical characteristics and prognosis of elderly patients with idiopathic sudden sensorineural hearing loss". Acta Otolaryngol. 139 (10): 866–869. doi:10.1080/00016489.2019.1641218. PMID 31452421.
  5. Mattox DE, Simmons FB (1977). "Natural history of sudden sensorineural hearing loss". Ann Otol Rhinol Laryngol. 86 (4 Pt 1): 463–80. doi:10.1177/000348947708600406. PMID 889223.