‘Silent’strokes com­mon in se­niors af­ter surgery

The Prince George Citizen - - Seniors -

Cana­dian re­searchers say so­called “silent” strokes are com­mon in se­niors af­ter they have elec­tive, non-car­diac surgery and dou­ble their risk of cog­ni­tive de­cline one year later.

Cardiologi­st and co-lead re­searcher PJ Dev­ereaux of Hamilton Health Sciences says that “silent” – or covert – strokes are ac­tu­ally more com­mon than overt strokes in surgery pa­tients aged 65 or older.

While an overt stroke causes ob­vi­ous symp­toms such as weak­ness in one arm or speech prob­lems, a covert stroke is not ob­vi­ous ex­cept on brain scans.

Overt stroke oc­curs in less than one per cent of adults af­ter non­car­diac surgery but re­searchers found that covert stroke oc­curred among seven per cent of the 1,114 study par­tic­i­pants.

The global study de­tected MRI ev­i­dence of the more subtle con­di­tion among 78 pa­tients aged 65 years and older who un­der­went surgery be­tween March 24, 2014, and July 21, 2017.

Th­ese pa­tients were also more likely to ex­pe­ri­ence cog­ni­tive de­cline, delir­ium, overt stroke or a mini-stroke within one year, com­pared to pa­tients who did not have a silent stroke. The re­sults of the Neu­roVISION study were pub­lished Thurs­day in The Lancet.

Co-lead in­ves­ti­ga­tor, Dr. Marko Mrko­brada of West­ern Uni­ver­sity, said the find­ings un­der­score the risks in­volved when older pa­tients un­dergo surgery, es­pe­cially as im­prov­ing sur­gi­cal and anes­thetic tech­niques al­low sur­geons to op­er­ate on older and sicker pa­tients.

Newspapers in English

Newspapers from Canada

© PressReader. All rights reserved.