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Over The Counter Eardrops May Cause Hearing Loss Or Damage
A new study, led by researchers at The
Montreal Children's Hospital (MCH) of the MUHC, has revealed that certain
over-the-counter earwax softeners can cause severe inflammation and damage
to the eardrum and inner ear. The results of the study, recently published
in The Laryngoscope, suggest that use of these medications should be
discouraged.
"Patients often complain that wax is blocking their ears and is causing
discomfort and sometimes deafness," says Dr. Sam Daniel principal
investigator of the study and director of McGill Auditory Sciences
Laboratory at The Children's. "Over-the-counter earwax softeners are used
to breakup and disperse this excess wax. However, the effects of these
medications on the cells of the ear had not been thoroughly analyzed."
"Because some of these products are readily available to the public
without a consultation with or prescription from a physician, it is
important to make sure they are safe to use. Our study shows that in a
well-established animal model, one such product, Cerumenex, is in fact,
toxic to the cells of the ear," says Dr. Daniel.
Dr. Daniel and his team studied the impact of Cerumenex on hearing. In
addition, overall toxicity in the outer ear and changes in the nerve cells
of the inner ear were analyzed.
"Harmful effects to many of the cells were observed after only one
dose," says Dr. Melvin Schloss co-author and MCH Director of
Otolaryngology. "We observed reduced hearing, severe inflammation, and
lesions to the nerve cells."
"We believe these findings are applicable to humans," add Dr. Daniel.
"The animal model we chose has been widely used to test toxicity. In
addition, this model has a very similar hearing mechanism. Overall, our
findings suggest that Cerumenex has a toxic potential and it should be used
with caution."
The Montreal Children's Hospital is the pediatric teaching hospital of
the McGill University Health Centre (MUHC). The institution is a leader in
the care and treatment of sick infants, children, and adolescents from
across Quebec. The Montreal Children's Hospital provides a high level and
broad scope of health care services, and provides ultra specialized care in
many fields including: cardiology and cardiac surgery; neurology and
neurosurgery, traumatology; genetic research; psychiatry and child
development and musculoskeletal conditions, including orthopedics and
rheumatology. Fully bilingual and multicultural, the institution
respectfully serves an increasingly diverse community in more than 50
languages. http://www.thechildren.com
THE MONTREAL CHILDREN'S HOSPITAL
http://www.thechildren.com
Counter-a lungul Eardrops poate determina pierderea auzului sau deteriorarea - Over The Counter Eardrops May Cause Hearing Loss Or Damage - articole medicale engleza - startsanatate