Stroke after any vascular proceedure though not an expected occurance is in the range of 1.5 to just under 4%. Here is an excerpt from a 2014 study.
—Using the national Vascular and Stroke registries, we identified 3998 patients who had undergone carotidendarterectomy or carotid artery stenting for symptomatic carotid stenosis between May 2008 and December 2012.Among these, 2% (79 of 3998) had undergone previous thrombolysis for stroke. We conducted a retrospective reviewof registry data and individual case records with regard to postoperative complications, including surgical-site bleeding,stroke, and death. The outcome was compared with the results for the remaining patient cohort (3919 of 3998) undergoingcarotid surgery and stenting during the study period.Results—The median time between thrombolysis and the carotid procedure was 10 days. Seventy-one patients underwentcarotid endarterectomy, and 6 patients underwent carotid artery stenting. The 30-day death and stroke rate for thethrombolysis cohort was 2.5% (2 of 79), and for the whole cohort, it was 3.8% (139 of 3626; P=0.55). The postoperativebleeding rates requiring reoperation were not significantly different between the groups (3.8% [3 of 79] in the thrombolysisgroup versus 3.3% [119 of 3626] in the whole cohort; P=0.79). There was no correlation between time from lysis tosurgery or stenting and complications at 30 days postoperatively.Conclusions—Urgent carotid endarterectomy or carotid artery stenting after thrombolysis for stroke may be safe withoutincreased risk of serious complications. (Stroke. 2014;45:776-780.)Key Words: endarterectomy, carotid ◼ stroke ◼ thrombolytic therapy
So to answer you initial question, thouhg not the expected outcome, it is certainly a possibility with major vascular surgeries.
Al in Kazoo