During the first months of the pandemic, a systematic review of COVID-19 and hearing impairment revealed a possible link between COVID-19 and audio-vestibular symptoms (hearing loss, tinnitus, and dizziness linked to COVID infection. -19 in some people, warn doctors.
Hearing loss and other hearing problems may be linked to Covid, according to the latest study from the University of Manchester and the Manchester Biomedical Research Center.
Scientists estimate that about 7.6% of people infected with coronavirus suffer from hearing loss, 14.8% suffer from tinnitus and 7.2% from dizziness.
Study data was compiled using self-reported questionnaires or medical records to obtain symptoms related to Covid.
The new study was published in the International Journal of Audiology and was funded by the NIHR Manchester Biomedical Research Center.
Kevin Munro, professor of audiology at the University of Manchester and head of hearing health at Manchester Biomedical Research Center (BRC), said: “There is an urgent need for a carefully conducted clinical and diagnostic study to understand the long-term effects. term of Covid-19 on the hearing system. ”
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In a study published in BMJ, permanent hearing loss after infection with COVID-19 was investigated.
The study noted: ‘Despite much published research on sudden hearing loss, only a few other cases associated with COVID-19 have been reported, and none in the UK so far.
“Doctors describe the case of a 45-year-old man with asthma who was referred to their hospital’s ear, nose and throat department after suddenly suffering hearing loss in one ear while ‘he was being treated for COVID-19 infection as an inpatient.
“He had been admitted to the hospital with symptoms of COVID-19 which had lasted for 10 days. He was transferred to intensive care because he was having trouble breathing.
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Patient noticed ringing in his left year a week after leaving intensive care with an examination of his ear canals revealing he had no blockages or inflammation.
But a hearing test showed he had significantly lost his hearing in his left ear.
“Despite the considerable literature on COVID-19 and the various symptoms associated with the virus, there is a lack of discussion on the relationship between COVID-19 and hearing,” say the report’s authors.
“Hearing loss and tinnitus are symptoms that have been seen in patients with both COVID-19 and the influenza virus, but have not been seen.” The first case of hearing loss mentioning COVID-19 alone was reported in April of this year.
Hearing difficulties associated with COVID-19 have been reported across a wide age range and COVID-19 severity, ranging from mild to severe.
There are several reports of sudden hearing loss in one ear, often accompanied by tinnitus.
In July last year, Wythenshawe Hospital, part of Manchester University NHS Foundation Trust, conducted a telephone survey which found that more than one in 10 people suffered from hearing problems after being released from treatment against the coronavirus.
Of the 121 adults admitted to hospital, 16 or 13.2% said their hearing deteriorated after discharge from the hospital.