Covid-19 might affect hearing too, a small study shows

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trader32176
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Covid-19 might affect hearing too, a small study shows

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Covid-19 might affect hearing too, a small study shows

8/1/20

https://www.cnn.com/world/live-news/cor ... index.html

Covid-19 might affect hearing too, a small study shows

Some coronavirus survivors have been experiencing hearing problems that lasted until long after they had been released from hospital, a small study has revealed.

Audiologists at the University of Manchester surveyed 121 adults who had been hospitalized with Covid-19 eight weeks after they were released.

When asked about changes to their hearing, 16 people reported their hearing was worse. Eight reported deterioration in hearing and another eight reported tinnitus -- hearing noises that are not caused by an outside source.

The researchers said the results, published in a letter to the International Journal of Audiology, add more anecdotal evidence to our understanding of the long-term effects of coronavirus on health.

Kevin Munro, professor of audiology and the Hearing Health Theme Lead at the Manchester Biomedical Research Centre, said scientists already knew that other viruses such as measles, mumps and meningitis can cause hearing loss and that coronaviruses can damage the nerves that carry information to and from the brain.

“It is possible, in theory, that Covid-19 could cause problems with parts of the auditory system including the middle ear or cochlea," he said.
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TimGDixon
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Re: Covid-19 might affect hearing too, a small study shows

Post by TimGDixon »

Its funny you brought that up trader - I was just reading this paper

https://journals.plos.org/plosone/artic ... ne.0228429
trader32176
Posts: 821
Joined: Fri Jun 26, 2020 5:22 am

Re: Covid-19 might affect hearing too, a small study shows

Post by trader32176 »

I read it, and posted it in my Diabetes study . I know that TSOi is not going in this direction at this time , but the new article was interesting about hearing loss , as diabetics can already have hearing loss without Covid 19 in their bodies.

https://www.diabetes.org/diabetes-and-hearing-loss

Re: Diabetes and Covid 19

Post by trader32176 » Tue Jul 21, 2020 7:06 am
'
Pterostilbene Protects Cochlea from Ototoxicity in Streptozotocin-Induced Diabetic Rats by Inhibiting the Apoptosis

https://www.biorxiv.org/content/10.1101 ... 798v1.full

Diabetes mellitus (DM) is a common metabolic disorder that affects the metabolism of proteins, fats, and carbohydrates. DM is caused by the pancreas’s failure to secrete insulin and/or the deterioration of the tissue’s response to insulin.1 Globally, diabetes is currently projected to affect 425 million people, and that number that is expected to reach 629 million by 2045.2 Diabetes causes complications in many organs, such as the kidneys, liver, nervous system, reproductive system, and eyes.

In DM, metabolic stress and oxygen reduction have been shown to increase free oxygen radical production and to decrease the protective capacity of the antioxidant defense system.14 DM contributes to the development of complications such as blindness, heart-vessel disease, and kidney disease, leading to a series of cascade reactions that cause the excessive production of free radicals.

Sudden or gradual hearing loss has been observed in DM patients.4,5,9 DM has been reported to cause various histological changes and hearing loss in the cochlea, VIII nerve, and the temporal bone.

PTS decreased the cochlear damage caused by diabetes, as confirmed by DPOAE, biochemical, histopathological, immunohistochemical, and molecular findings. This study reports the first in vivo findings to suggest that PTS may be a protective therapeutic agent against diabetes-induced ototoxicity.
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TimGDixon
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Re: Covid-19 might affect hearing too, a small study shows

Post by TimGDixon »

i must have missed it - thanks for finding it and posting it
trader32176
Posts: 821
Joined: Fri Jun 26, 2020 5:22 am

Re: Covid-19 might affect hearing too, a small study shows

Post by trader32176 »

no problema
there are a lot of threads here , so things get missed by all of us .
trader32176
Posts: 821
Joined: Fri Jun 26, 2020 5:22 am

Re: Covid-19 might affect hearing too, a small study shows

Post by trader32176 »

COVID-19 can cause sudden permanent hearing loss in rare cases

10/15/20


https://www.news-medical.net/news/20201 ... cases.aspx


As the coronavirus disease (COVID-19) pandemic evolves, the virus's symptoms continue to expand across the human body. Caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the coronavirus infection causes many severe complications in some people, especially those at a higher risk of developing a serious illness.

Many complications have been reported, including heart disease and prolonged respiratory issues in a group of people called “long-haulers.” Now, a new worrying finding shows that COVID-19 can cause sudden and irreversible hearing loss in patients.

A team of researchers at the University College London report a few cases of hearing loss, diagnosed as sudden-onset sensorineural hearing loss (SSNHL) after being infected with COVID-19.

What is sudden-onset sensorineural hearing loss (SSNHL)?


SSNHL, commonly known as sudden deafness, is an unexplained and rapid loss of hearing all at once or over a few days. It occurs due to a problem with the sensory organs of the inner ear.

SSNHL is also defined as a hearing loss of at least 30 dB in at least three consecutive frequencies that have developed within three days. It is a common condition seen by doctors, with an incidence of 5 to 160 cases per 100,000 people each year.

People affected with the disorder usually experience hearing loss upon waking up in the morning. Accompanying symptoms include the feeling of ear fullness, tinnitus or ringing in the ear, and dizziness.

COVID-19 and SSNHL case study

The study, published in the journal BMJ Case Reports, looks at the case of a 45-year old male with asthma who was admitted to intensive care with COVID-19. He had been intubated for 30 days and suffered from complications, including bilateral pulmonary emboli, ventilator-associated pneumonia, anemia, and pulmonary hypertension.

The patient received drugs, including the antiviral remdesivir and intravenous steroids. He developed hearing loss and tinnitus a week after being extubated and sought medical care from the otolaryngology department.

Other than asthma, he had no other medical conditions before being infected with SARS-CoV-2. When the doctor examined his ear canal, it was unobstructed, and there was no inflammation. The tympanic membranes were intact, but he exhibited left-sided sensorineural hearing loss with a negative Rinne’s test on the side and Weber’s test lateralizing to the opposite ear. Upon having a pure tone audiogram, it was confirmed that he had hearing loss and was subjected to a series of intratympanic steroid injections.

What other studies say

Sensorineural hearing loss has long been studied in the field of otolaryngology, focusing on the optimal route of steroid administration for treatment. But, amid the coronavirus pandemic, the link between COVID-19 and SSNHL has not been well-studied.

To explore the relationship between the two conditions, the team conducted a systematic literature review using EMBASE and PubMed databases between 1950 and 2020. The researchers used keywords such as “hearing loss,” “coronavirus,” “COVID-19,” and “sensorineural hearing loss.” The team landed with three case reports and two case-control studies.

Though a few studies are tackling the link between COVID-19 and SSNHL, tissue studies of patients with SSNHL revealed the loss of hair cells and the supporting cells of the organ of Corti, a part of the inner ear, without inflammatory infiltrate.

“This is the first reported case of sensorineural hearing loss following COVID-19 infection in the UK. Given the widespread presence of the virus in the population and the significant morbidity of hearing loss, it is important to investigate this further,” the team explained.

“This is especially true given the need to promptly identify and treat the hearing loss and the current difficulty in accessing medical services. We suggest that patients are asked about hearing loss in the ITU environments when applicable, and any patient reporting acute hearing loss should be referred to otolaryngology on an emergency basis,” they added.

The sudden SSNHL appears to follow the COVID-19 infection. Just like idiopathic SSNHL, further research is needed to consider the benefit of steroid inflammation.

Source:

National Institute of Deafness and Other Communication Disorders (NIDCD). (2020). https://www.nidcd.nih.gov/health/sudden ... ineural%20(%E2%80%9Cinner%20ear%E2%80%9D,frequently%20affects%20only%20one%20ear.

Journal reference:


Loupa, F., Forde C., and Manjaly, J. (2020). Sudden irreversible hearing loss post COVID-19. BMJ. https://casereports.bmj.com/content/13/11/e238419
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