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Intracranial hemorrhage (ICH), a relatively infrequent complication of carotid artery revascularization, carries a high rate of periprocedural morbidity and mortality. Little is known about the comparative prevalence, nature, and risk factors associated with ICH among recipients of carotid endarterectomy (CEA) and carotid angioplasty plus stenting (CAS), especially outside of clinical trials. To provide such data, researchers assessed postoperative ICH following CEA or CAS in the National Inpatient Sample (NIS) from 2001 to 2008. The NIS approximates a stratified 20% sample of nonfederal U.S. hospitals. The authors analyzed hemorrhage rates and types, in-hospital mortality, and discharge status according to revascularization procedure and s…