Does ABCD2 score below 4 allow more time to evaluate patients with a transient ischemic attack?
GROUND AND PURPOSE: The National Institute for Clinical Excellence (NICE) recommends that patients with a transient ischemic attack and ABCD(2) score > or =4 and those with >2 transient ischemic attacks within 1 week be admitted for urgent complete etiologic evaluation within 24 hours and that those with an ABCD(2) score <4 be evaluated less urgently within 1 week. METHODS: Using data from 1176 patients with a definite or possible transient ischemic attack or minor stroke included in the SOS-TIA registry (January 2003 to June 2007), we studied the usefulness of the conventional ABCD(2) score cutoff as well as the NICE criteria for urgent admission to a stroke unit defined as presence of symptomatic internal carotid artery stenosis > or =50%, symptomatic intracranial artery stenosis > or =50%, or major cardiac source of embolism. RESULTS: Among 697 patients with an ABCD(2) score <4, 20% required immediate consideration for emergency treatment (eg, symptomatic internal carotid stenosis >
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