Idiopathic sudden sensorineural hearing loss- an independent risk factor for stroke development
Researchers from a recent study have found out that idiopathic sudden sensorineural hearing loss (ISSNHL) may be an independent risk factor for the subsequent development of stroke especially in a sub-group of elderly patients.
The study is published in The Laryngoscope.
Idiopathic sudden sensorineural hearing loss (ISSNHL), or sudden deafness, is defined as an acute hearing loss of at least 30 decibels across three contiguous frequencies occurring over a 72-hour period. Although various theories on the underlying pathophysiology have been proposed (viral, vascular, immune-mediated) the cause of the hearing loss in most patients remains unknown.
However, consistent evidence supporting the various pathophysiologic hypotheses, prognostic associations, and even treatment recommendations for ISSNHL is scarce. Hence, Marc J. W. Lammers and associates from the BC Rotary Hearing and Balance Centre at St. Paul's Hospital (M.J.W.L., E.Y., B.D.W., J.L.), University of British Columbia, Vancouver, British Columbia, Canada conducted this systematic review and a meta-analysis assessing the risk of developing stroke and myocardial infarction after presentation with ISSNHL.
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