Use of Stent Increases Risk of Stroke in Patients With Intracranial Arterial Stenosis

Be careful out there.
http://dgnews.docguide.com/use-stent-increases-risk-stroke-patients-intracranial-arterial-stenosis?overlay=2&
Among patients with symptomatic intracranial arterial stenosis, the use of a balloon-expandable stent compared with medical therapy resulted in an increased risk of stroke or transient ischemic attack (TIA), according to a study published in the March 24/31 issue of JAMA.
Intracranial arterial stenosis is a common cause of stroke worldwide. The recurrent stroke risk with severe symptomatic intracranial stenosis may be as high as 23% at 1 year, despite medical therapy, according to Osama O. Zaidat, MD, Medical College of Wisconsin/Froedtert Hospital, Milwaukee, Wisconsin, and colleagues.

But they don't explain whether the strokes were downstream or close to the stent or in a completely different area. Don't these people know how to analyze cause and effect? If someone has stenosis it is probably throughout the brain so a stroke would be likely regardless of fixing one particular spot.