Table 6.1A summary of the study characteristics

Studies (no. of patients)PatientsTime to scan (from symptoms onset)Positive scanFollow-up duration
Purroy et al. (2004) N=83TIA patients attending the emergency departmentMaximum 7 days32.5%Mean 389 days
Prabhakaran et al. (2007) N=146TIA admissionsWithin 48 hrs25%90 days
Boulanger et al. (2007)Patients with motor hemiparesis or aphasic TIA lasting not longer than 5 minutes within the previous 12 hrsWithin 24 hrs41.2%Median 13 months
Calvert et al. (2007)Patients admitted to a stroke unit within 48 hrs of symptom onset with a diagnosis of probable or possible TIAMedian 180 mins32.2%3 months
Coutts et al. (2005)Patients with minor stroke and NIHSS score of 0 to 3 or resolved hemiparesis or aphasia lasting longer than 5 minsWithin 24 hrs45%90 days

From: 6, Imaging in TIA and non-disabling stroke

Cover of Stroke
Stroke: National Clinical Guideline for Diagnosis and Initial Management of Acute Stroke and Transient Ischaemic Attack (TIA).
NICE Clinical Guidelines, No. 68.
National Collaborating Centre for Chronic Conditions (UK).
Copyright © 2008, Royal College of Physicians of London.

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