group 1 ( n = 132 ) had simultaneous carotid endarterectomy and cab , group 2 ( n = 51 ) were patients having perioperative stroke following elective cab , and group 3 ( n = 169 ) had cab alone but had prior history of either asymptomatic cervical bruit , stroke/transient cerebral ischemic attack ( tia ) , or carotid endarterectomy .
C0038454
stroke
C0007787
transient