ABCD² Score for Transient Ischemic Attack (TIA) Early Stroke Risk Calculator

Compute the 0–7 point ABCD² TIA score and 2-day / 90-day stroke risk tier.

ABCD² TIA Score
5 points (0–7)
2-Day Post-TIA Stroke Risk 4.1 %
90-Day Post-TIA Stroke Risk 9.8 %
Clinical + Duration Subscore 3 pts (max 4)
Inputs
⚡ Scenarios:
0 or 1
Age ≥ 60 years (1 point, else 0).
0 or 1
Initial Blood Pressure ≥ 140/90 mmHg (1 point, else 0).
pts (0–2)
Clinical features (2 = unilateral weakness, 1 = speech disturbance without weakness, 0 = other).
pts (0–2)
Symptom duration (2 = ≥60 min, 1 = 10–59 min, 0 = <10 min).
0 or 1
History of Diabetes Mellitus (1 point, else 0).
Results & Graph
ABCD² TIA Score
5 points (0–7)
2-Day Post-TIA Stroke Risk
4.1 %
90-Day Post-TIA Stroke Risk
9.8 %
Clinical + Duration Subscore
3 pts (max 4)

ABCD² TIA Score

Graph 1 • ABCD² TIA Stroke Risk • Domain Architecture & Live Telemetry Maps Age60 Or Older Points0or1, Bp140 Over90 Points0or1, Clinical Features Points0to2 through ABCD² TIA Stroke Risk Formula.
ABCD² TIA Stroke Risk • Clinical & Physiological Reference Scale Low / Baseline Target / Reference Elevated / Watch High / Action ABCD² TIA Score: 5 points (0–7) 2-Day Post-TIA Stroke Risk 4.1 % 90-Day Post-TIA Stroke Ris 9.8 % Clinical + Duration Subsco 3 pts (max 4)
Graph 2 • ABCD² TIA Score Across Age60 Or Older Points0or1 Sweep (40% → 160%) Evaluates ABCD² = Age≥60 (1) + BP≥140/90 (1) + Clinical (0–2) + Duration (0–2) + D across 7 operating points (current input highlighted).
0 points 2.75 points 5.50 points 4 0.400 5 0.600 5 0.800 5 1 5 1.20 5 1.40 5 1.60
Graph 3 • Joint Sensitivity: Age60 Or Older Points0or1 × Bp140 Over90 Points0or1 Compares ABCD² TIA Score when Bp140 Over90 Points0or1 is shifted +25% (solid) vs. −25% (dashed).
0 points 2.75 points 5.50 points --- Bp140 Over90 Points0or1 @ 75% 5 -30% 5 -15% 5 +0% 5 +15% 5 +30%
Summary: ABCD² score is 5/7 (Estimated stroke risk: 4.1% at 2 days and 9.8% at 90 days).
Summary: ABCD² score is 5/7 (Estimated stroke risk: 4.1% at 2 days and 9.8% at 90 days).
⚡ Send result to: BMI →Calorie & TDEE →Pace, 1RM & HR Zones →
Interactive chart & math engine powered by CalculatorGraph

Formula & Mathematical Methodology: ABCD² TIA Stroke Risk Formula

ABCD² = Age≥60 (1) + BP≥140/90 (1) + Clinical (0–2) + Duration (0–2) + Diabetes (1)
ABCD² = Age≥60 (1) + BP≥140/90 (1) + Clinical (0–2) + Duration (0–2) + Diabetes (1)
  • age60OrOlderPoints0or1: Age60 Or Older Points0or1 (0 or 1)
  • bp140Over90Points0or1: Bp140 Over90 Points0or1 (0 or 1)
  • clinicalFeaturesPoints0to2: Clinical Features Points0to2 (pts (0–2))
  • durationPoints0to2: Duration Points0to2 (pts (0–2))
  • diabetesPoints0or1: Diabetes Points0or1 (0 or 1)

Rounding: Clinical scores round to statutory integer or decimal precision; physiological metrics round to 2 decimal places.

Worked Example: Clinical / Physiology Scenario: ABCD² TIA Stroke Risk

Compute the 0–7 point ABCD² TIA score and 2-day / 90-day stroke risk tier.

  1. Enter lab values, anthropometric measurements, or performance test metrics.
  2. Evaluate the reference equation: ABCD² = Age≥60 (1) + BP≥140/90 (1) + Clinical (0–2) + Duration (0–2) + Diabetes (1).
  3. Inspect the primary classification, supporting indices, and 3 SVG charts.
Result: Computes ABCD² TIA Stroke Risk via ABCD² = Age≥60 (1) + BP≥140/90 (1) + Clinical (0–2) + Duration (0–2) + Diabetes (1).

Frequently Asked Questions

How does the ABCD² Score for Transient Ischemic Attack (TIA) Early Stroke Risk Calculator compute its result?

It evaluates ABCD² = Age≥60 (1) + BP≥140/90 (1) + Clinical (0–2) + Duration (0–2) + Diabetes (1) directly in your browser and updates three custom SVG visualizations in real time.

Can I use Goal Seek to solve backwards for a target lab value or pace?

Yes. Click "🎯 Goal Seek" in the results toolbar to solve backwards for any numeric input parameter.

Are my health and biometric inputs kept private?

Yes. All calculations run 100% locally on your device with zero external transmission.

Health & Fitness · Neurology, Trauma & Emergency

ABCD² Score for Transient Ischemic Attack (TIA) Early Stroke Risk Calculator: inputs, method, and how to read the result

Compute the 0–7 point ABCD² TIA score and 2-day / 90-day stroke risk tier.

Choose inputs for the case you are checking

The defaults are illustrative. Replace them with values for your case and keep the units shown beside each field.

  • Age60 Or Older Points0or1: Age ≥ 60 years (1 point, else 0).
  • Bp140 Over90 Points0or1: Initial Blood Pressure ≥ 140/90 mmHg (1 point, else 0).
  • Clinical Features Points0to2: Clinical features (2 = unilateral weakness, 1 = speech disturbance without weakness, 0 = other).
  • Duration Points0to2: Symptom duration (2 = ≥60 min, 1 = 10–59 min, 0 = <10 min).

What the calculation includes

With the default values shown, ABCD² TIA Score is 5 points (0–7). The calculation follows ABCD² TIA Stroke Risk Formula; the formula and variable definitions above show how the inputs combine.

One-input check: With the other defaults held constant, changing Age60 Or Older Points0or1 from 1 0 or 1 to 0 0 or 1 changes ABCD² TIA Score from 5 points (0–7) to 4 points (0–7). This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Uses peer-reviewed clinical and sports physiology formulas.
  • For educational and informational reference only; clinical scores do not replace physician judgment or laboratory reference ranges.

Scope: Global Clinical & Sports Science Consensus Check the assumptions and limitations against your situation before relying on the estimate.

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