Table 1. The CHA2DS2-VA score.

Risk factor	Definition	Points
C	Congestive heart failure which includes: symptomatic HFrEF and HFpEF moderately–severely reduced left ventricular function in the absence of previous symptoms	1
H	Hypertension – whether or not blood pressure is currently elevated	1
A	Age ≥75 years	2
D	Diabetes	1
S	Previous stroke or transient ischaemic attack or history of systemic thromboembolism	2
V	Presence of vascular disease: • previous myocardial infarction, or • peripheral arterial disease, or • complex aortic atheroma or plaque on imaging	1
A	Age 65–74 years	1

Oral anticoagulation therapy to prevent stroke and systemic embolism is recommended in patients with non-valvular atrial fibrillation whose CHA2DS2-VA score is ≥2 (high quality of evidence), unless there are contraindications to anticoagulation, and should be considered strongly if CHA2DS2-VA score is 1 (moderate quality of evidence).3

HFrEF heart failure with reduced ejection fraction

HFpEF heart failure with preserved ejection fraction

Source: reference 3