Acute Bilateral Vestibular Neuropathy During Myocardial Infarction: A Case Report

Background: The posterior labyrinth is particularly vulnerable to ischemic injury. Vertigo can occasionally be the only presenting symptom of acute myocardial infarction (AMI). Acute Bilateral Vestibular Neuropathy (ABVN) is an extremely rare condition, with only three cases previously reported in the literature. Its exact pathophysiological mechanisms remain unclear. Case Presentation: We present the case of a 76-year-old male who presented to the emergency department (ED) with vertigo and severe postural unsteadiness. Subsequently, a silent AMI was diagnosed, prompting cardiac stenting. Vestibular function assessments over the following eight months confirmed the diagnosis of ABVN. A cycle of vestibular rehabilitation yielded limited objective benefit, although the patient reported subjective improvement as measured by the Dizziness Handicap Inventory (DHI). Discussion and Conclusions: This case suggests a potential association between peripheral vestibular dysfunction and acute hemodynamic impairment due to myocardial infarction. Notably, it represents the first reported case of ABVN following a silent AMI, presenting solely with vestibular symptoms.