Figure 1. Flow of Patients Through the Cerebral Embolic Protection Device Trial.

^aThese are the top 3 reasons for not meeting inclusion criteria. There were 1140 patients who were excluded for other reasons.

^bThe first 12 patients randomized to the control group served as controls for the intra-aortic filtration group only and the other 120 patients served as controls for both the suction-based extraction group and the intra-aortic filtration group.