ABCD2 score | |
---|---|
Calculator | MDCalc |
The ABCD2 score is a clinical prediction rule used to determine the risk for stroke in the days following a transient ischemic attack (TIA, a condition in which temporary brain dysfunction results from oxygen shortage in the brain). [1] [2] Its usefulness was questioned in a 2015 review as it was not found to separate those who are at low from those who are at high risk of future problems. [3] A high score correctly predicted 87% of the people who did have a stroke in the following 7 days but also many people who did not have problems. [3]
The ABCD2 score is based on five parameters (age, blood pressure, clinical features, duration of TIA, and presence of diabetes); scores for each item are added together to produce an overall result ranging between zero and seven. [1] People found to have a high score are often sent to a specialist sooner. [1] Other clinical risk factors, such as atrial fibrillation and anticoagulation treatment, as well as ongoing or recurrent TIA, are also relevant. [1]
The ABCD2 score was proposed in 2007 as a modified version of the ABCD score of 2005 (the ABCD score did not consider the presence of diabetes). [4] [5] [6] In the largest study based on emergency department testing of the ABCD2 score in an acute setting, the score performed poorly in both high-risk and low-risk patients. The study found the score to be 31.6% sensitive in high-risk patients (score >5) and only 12.5% specific in low-risk patients (score ≤2). [7]
Age | Blood Pressure | Clinical Features | Duration of TIA |
Diabetes | |
---|---|---|---|---|---|
no point | <60 years | normal | no speech disturbance and no unilateral (one-sided) weakness | <10 minutes | no diabetes |
1 point | ≥60 years | raised (≥140/90 mmHg) |
speech disturbance present but no unilateral weakness | 10–59 minutes | diabetes present |
2 points | – | – | unilateral weakness | ≥60 minutes | – |
The risk for stroke can be estimated from the ABCD2 score as follows:
ABCD2 score | |
---|---|
Calculator | MDCalc |
The ABCD2 score is a clinical prediction rule used to determine the risk for stroke in the days following a transient ischemic attack (TIA, a condition in which temporary brain dysfunction results from oxygen shortage in the brain). [1] [2] Its usefulness was questioned in a 2015 review as it was not found to separate those who are at low from those who are at high risk of future problems. [3] A high score correctly predicted 87% of the people who did have a stroke in the following 7 days but also many people who did not have problems. [3]
The ABCD2 score is based on five parameters (age, blood pressure, clinical features, duration of TIA, and presence of diabetes); scores for each item are added together to produce an overall result ranging between zero and seven. [1] People found to have a high score are often sent to a specialist sooner. [1] Other clinical risk factors, such as atrial fibrillation and anticoagulation treatment, as well as ongoing or recurrent TIA, are also relevant. [1]
The ABCD2 score was proposed in 2007 as a modified version of the ABCD score of 2005 (the ABCD score did not consider the presence of diabetes). [4] [5] [6] In the largest study based on emergency department testing of the ABCD2 score in an acute setting, the score performed poorly in both high-risk and low-risk patients. The study found the score to be 31.6% sensitive in high-risk patients (score >5) and only 12.5% specific in low-risk patients (score ≤2). [7]
Age | Blood Pressure | Clinical Features | Duration of TIA |
Diabetes | |
---|---|---|---|---|---|
no point | <60 years | normal | no speech disturbance and no unilateral (one-sided) weakness | <10 minutes | no diabetes |
1 point | ≥60 years | raised (≥140/90 mmHg) |
speech disturbance present but no unilateral weakness | 10–59 minutes | diabetes present |
2 points | – | – | unilateral weakness | ≥60 minutes | – |
The risk for stroke can be estimated from the ABCD2 score as follows: