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Restricted Diffusion in the Optic Nerve Head After Shock-Induced Anterior Ischemic Optic Neuropathy.
Al Othman, Bayan A; Naser, Maryam; Kini, Ashwini T; Lee, Andrew G.
Afiliación
  • Al Othman BA; Department of Ophthalmology (BAAO, ATK, AGL), Blanton Eye Institute, Houston Methodist Hospital, Houston, Texas; Department of Ophthalmology (MN), USC Roski Eye Institute, Keck Medicine of USC, Los Angeles, California; Departments of Ophthalmology (AGL), Neurology, and Neurosurgery, Weill Cornell Medicine, New York, New York; Department of Ophthalmology (AGL), University of Texas Medical Branch, Galveston, Texas; Department of Ophthalmology (AGL), University of Texas MD Anderson Cancer Center, H
J Neuroophthalmol ; 41(1): e114-e115, 2021 03 01.
Article en En | MEDLINE | ID: mdl-32028450
ABSTRACT: Shock-induced anterior ischemic optic neuropathy (SIAION) is a known type of optic neuropathy in patients who experienced shock related to different etiologies such as anemia and severe intradialytic hypotension like in our patient. Nonarteritic anterior ischemic optic neuropathy (NAION) is the most common acute unilateral known type of optic neuropathy in older patients with vasculopathic risk factors such as hypertension, diabetes mellitus, and obstructive sleep apnea. Although SIAION and NAION are similar optic neuropathies due to ischemia and, in particular, hypotension, they may have different pathogenic mechanisms (e.g., acute shock or intradialytic hypotension vs nocturnal hypotension), laterality (e.g., unilateral vs bilateral), and severity (e.g., light perception or worse vision). We presented a case with restricted diffusion on the apparent diffusion coefficient and the diffusion weighted imaging confined to the optic disc head in a patient with pallid edema after intradialytic hypotension. Although DWI of the optic nerve is neither 100% specific nor 100% sensitive for ischemia, we believe that restricted diffusion of the optic nerve head in our case is a clinico-radiologic correlate to pallid edema in SIAION.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Disco Óptico / Neuropatía Óptica Isquémica Tipo de estudio: Risk_factors_studies Límite: Adult / Humans / Male Idioma: En Revista: J Neuroophthalmol Asunto de la revista: NEUROLOGIA / OFTALMOLOGIA Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Disco Óptico / Neuropatía Óptica Isquémica Tipo de estudio: Risk_factors_studies Límite: Adult / Humans / Male Idioma: En Revista: J Neuroophthalmol Asunto de la revista: NEUROLOGIA / OFTALMOLOGIA Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos