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The ABCD 2 score is a clinical score to determine the risk for stroke within the first two days following a transient ischemic
attack (TIA, a condition in which temporary brain dysfunction results from oxygen shortage in the brain). The score has
recently been proposed to be equally useful to predict the risk of recurrent stroke during the first hours following TIA or minor
The ABCD 2 score is based on five parameters: age, blood pressure, clinical features, duration of TIA, and presence of
diabetes. Each item is scored and the results are added to a result ranging between zero and seven. The ABCD 2 score is
a modified version of the ABCD score (which covers the same parameters but without diabetes). 
1 Scoring system
3 See also
ABCD 2 score
Age Blood Pressure Clinical Features Duration Diabetes
0 <60 less than 10
normal other than those specified no diabetes
points years minutes
1 ≥60 raised (blood pressure speech disturbance without diabetes
10 to 59 minutes
points years ≥140/90) weakness present
unilateral (one-sided) weakness ≥60 minutes
The risk for stroke can be estimated from the ABCD 2 score as follows:
Score 1-3 (low)
2 day risk = 1.0%
7 day risk = 1.2%
Score 4-5 (moderate)
2 day risk = 4.1%
7 day risk = 5.9%
Score 6–7 (high)
2 day risk = 8.1%
7 day risk = 11.7%
1. ^ a b Johnston SC, Rothwell PM, Nguyen-Huynh MN, et al. (January 2007). "Validation and refinement of scores to predict very
early stroke risk after transient ischaemic attack". Lancet 369 (9558): 283–92. doi:10.1016/S0140-6736(07)60150-0 .
PMID 17258668 .
2. ^ Chandratheva A, Mehta Z, Geraghty OC, et al. (2009). "Population-based study of risk and predictors of stroke in the first few
hours after a TIA" . Neurology 72 (22): 1941–1947. doi:10.1212/WNL.0b013e3181a826ad . PMC 2690971 .
PMID 19487652 .
3. ^ Rothwell PM, Giles MF, Flossmann E, et al. (2005). "A simple score (ABCD) to identify individuals at high early risk of stroke after
transient ischaemic attack". Lancet 366 (9479): 29–36. doi:10.1016/S0140-6736(05)66702-5 . PMID 15993230 .
4. ^ Johnston SC, Gress DR, Browner WS, Sidney S (December 2000). "Short-term prognosis after emergency department diagnosis
of TIA". JAMA 284 (22): 2901–6. doi:10.1001/jama.284.22.2901 . PMID 11147987 .
via ABCD² score