The ABCD² score calculator is a tool designed to evaluate the risk of stroke based on several clinical factors. By assessing key health indicators, it provides an overall risk status which guides medical intervention.

Here’s how the scoring process works:

- Age: Individuals who are 60 years or older receive a score of 1. Otherwise, the score is 0.
- Blood Pressure: If the systolic blood pressure is 140 mmHg or higher, or the diastolic blood pressure is 90 mmHg or higher, the score is 1. Otherwise, it is 0.
- Clinical Symptoms: 
  - If the symptoms include unilateral weakness, the score is 2.
  - For speech impairment without weakness, the score is 1.
  - Any other symptoms receive a score of 0.
- Duration of Symptoms:
  - Symptoms lasting less than 10 minutes result in a score of 0.
  - Those lasting from 10 to 59 minutes score 1.
  - Symptoms persisting for 60 minutes or more score 2.
- History of Diabetes: A history of diabetes adds a score of 1; if not present, the score remains 0.

The scores from each category are summed to produce a total that represents the stroke risk level:

- A total score of 3 or less indicates a low risk of stroke.
- A score of 4 or 5 denotes a moderate risk.
- A score of 6 or 7 signifies a high risk.

This scoring system provides a straightforward method for assessing stroke risk, aiding healthcare professionals in making informed decisions about patient care.

The ABCD² score is a clinical prediction rule used to determine the risk of stroke within the next few days after a transient ischemic attack (TIA). The acronym stands for Age, Blood pressure, Clinical features, Duration of symptoms, and Diabetes. 

This calculator is applicable to patients who have experienced a TIA or "mini-stroke". It helps clinicians to stratify the risk of subsequent stroke, which can guide further diagnostic evaluation and treatment. 

The ABCD² score may not be suitable for use in patients with non-ischemic transient neurological symptoms, or in those with a clear alternative diagnosis for their symptoms. It is also less accurate in predicting stroke risk beyond the immediate few days following a TIA.

ABCD² score for stroke