title: Transient cortical blindness: a benign but devastating complication after coronary angiography and graft study.
abstract: Transient cortical blindness after coronary angiography and bypass graft is a very rare complication. In this report we present the case of a 63-year-old man who developed transient cortical blindness within 30 minutes of coronary angioplasty and graft study, but subsequently recovered within 72 hours without any neurological deficit. A plain computed tomography brain scan showed bilateral symmetrical subarachnoid hyperdensities in the posterior cerebral circulation area suspicious of subarachnoid bleed. However, magnetic resonance imaging and magnetic resonance angiography scans were normal. Excess contrast volume causing direct neurotoxicity seems to be the most probable cause, but the exact mechanism is unclear.
authors.forename: Ganiga Srinivasaiah
authors.initials: GS
authors.lastname: Sridhar
authors.forename: Muhammad Athar
authors.initials: MA
authors.lastname: Sadiq
authors.forename: Wan Azman
authors.initials: WA
authors.lastname: Wan Ahmad
authors.forename: Chitra
authors.initials: C
authors.lastname: Supuramaniam
authors.forename: Abdul Wahab
authors.initials: AW
authors.lastname: Undok
authors.forename: Imran Zainal
authors.initials: IZ
authors.lastname: Abidin
authors.forename: Kok Han
authors.initials: KH
authors.lastname: Chee
mesh_terms: D017130:Angioplasty; D019575:Blindness, Cortical / Q000209:etiology*; D003287:Contrast Media / Q000009:adverse effects; D017023:Coronary Angiography / Q000009:adverse effects*; D001026:Coronary Artery Bypass; D054059:Coronary Occlusion / Q000000981:diagnostic imaging* / Q000209:etiology / Q000628:therapy; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D003287:Contrast Media