CHA2DS2-VASc - AF Stroke Risk Calculator
The CHAD2S2-VASc calculator evaluates ischaemic stroke risk in patients with Atrial Fibrillation. The patient is allocated points based on their previous medical history in the following areas:
- Congestive Heart Failure
- Hypertension
- Age (Over 75 years)
- Diabetes Mellitus
- Strokes or TIA
- Vascular Disease
- Age (65 to 74 years)
- Sex Category
The CHA2DS2-VASc risk score is calculated using the following data:
|
|
Condition |
Criteria |
Points |
|---|---|---|---|
|
C |
Congestive Heart Failure |
QOF Read codes |
+1 |
|
H |
Hypertension |
QOF Read codes |
+1 |
|
A |
Age |
Over 75 years old |
+2 |
|
D |
Diabetes Mellitus |
QOF Read codes |
+1 |
|
S2 |
Stroke/TIA/Thromboembolism History |
QOF codes for Stroke/TIA Thromboembolism Read codes G401% and G801% |
+2 |
|
V |
Vascular disease. Prior MI, PAD, or aortic plaque |
QOF Read codes for PAD MI Read codes G30%, G35%, G38%, Gyu34, Gyu36 and excluding G30A. |
+1 |
|
A |
Age |
Age 65 to 74 years |
+1 |
|
A |
Age |
< 65 years |
0 |
|
Sc |
Sex category (female). Female gender confers higher risk |
Female |
+1 |
|
Sc |
Sex category |
Male |
0 |
To complete the CHA2DS2-VASc Calculator:
- From Consultation Manager, click on the Vision+ icon on the floating toolbar and select Calculators - Cardiovascular - CHA2DS2-VASc:
- The top of the calculator shows a dot against the patient's pre-existing conditions. You also see the latest recorded entry along with the date of diagnosis at the base of the screen. To view historical data select a red previous entries
icon or a blue previous entry 
icon indicates the patient does not have any previous records. - To do a 'What If' scenario with the patient you can change or select a box at the top of the screen which automatically adjusts the score at the base of the screen.
- The Read code, score and event data are automatically displayed at the base of the screen. Select OK to record the Read code and score or select OK & Attach to record both the Read code and the attachment.Note - The Read code is recorded in the patient's journal under Scoring Test results with the Read code 38DE0 - CHA2DS2 - vascular disease, age, sex, category score.
