Use of ABCD2 risk scoring system to determine the short-term stroke risk in patients presenting to emergency department with transient ischaemic attack

Area of Science:

• Neurology
• Emergency Medicine
• Clinical Risk Stratification

Background:

• Transient ischemic attack (TIA) is a critical warning sign for future stroke.
• Accurate risk stratification is essential for timely intervention in TIA patients.
• The ABCD(2) score is a widely used tool for assessing TIA risk.

Purpose of the Study:

• To determine the 3-day stroke risk in emergency department patients presenting with TIA.
• To evaluate the predictive accuracy of the ABCD(2) score for short-term stroke risk.

Main Methods:

• A prospective study involving 64 TIA patients categorized into low (0-3), medium (4-5), and high (6-7) risk groups based on ABCD(2) scores.
• Receiver operating characteristic (ROC) curve analysis was used to assess the sensitivity and specificity of the ABCD(2) score for predicting 3-day stroke risk.
• Statistical analysis was performed using SPSS 15.

Main Results:

• No strokes occurred in the low-risk group (0-3 points).
• Stroke incidence was 12.12% in the medium-risk group (4-5 points) and 22.22% in the high-risk group (6-7 points).
• The ABCD(2) score demonstrated a c-statistic of 0.76 (95% CI: 0.64, 0.86; p < 0.01) on ROC analysis, with a cut-off score of 4 identified as optimal for risk stratification.

Conclusions:

• An ABCD(2) score of 4 or higher in TIA patients indicates a significantly elevated short-term stroke risk.
• Patients with an ABCD(2) score below 4 are at low risk for immediate stroke.
• Hospitalization and prompt investigation for underlying causes are recommended for TIA patients with an ABCD(2) score of 4 or more.