open access: Nature Reviews: Key Advances in Medicine
open access: Nature Reviews: Key Advances in Medicine
open access: Nature Reviews: Key Advances in Medicine
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CARDIOLOGY<br />
Box 1 | Abbreviations and def<strong>in</strong>itions<br />
CHADS2 Congestive heart failure (1 po<strong>in</strong>t)<br />
Hypertension (1 po<strong>in</strong>t)<br />
Age ≥75 years (1 po<strong>in</strong>t)<br />
Diabetes mellitus (1 po<strong>in</strong>t)<br />
Stroke or thromboembolism (2 po<strong>in</strong>ts)<br />
CHA DS -VASc<br />
2 2<br />
Congestive heart failure (1 po<strong>in</strong>t)<br />
Hypertension (1 po<strong>in</strong>t)<br />
Age ≥75 years (2 po<strong>in</strong>ts)<br />
Diabetes mellitus (1 po<strong>in</strong>t)<br />
Sex, female (1 po<strong>in</strong>t)<br />
Vascular disease (1 po<strong>in</strong>t)<br />
Age 65–74 years (1 po<strong>in</strong>t)<br />
Stroke or thromboembolism (2 po<strong>in</strong>ts)<br />
HAS-BLED<br />
Hypertension (uncontrolled blood pressure)<br />
Abnormal renal or liver function<br />
Stroke<br />
Bleed<strong>in</strong>g history or predisposition<br />
Labile <strong>in</strong>ternational normalized ratio (INR)<br />
Elderly (age >65 years)<br />
Drugs concomitantly (for example,<br />
concomitant aspir<strong>in</strong> or nonsteroidal anti<strong>in</strong>flammatory<br />
drugs, or alcohol abuse)<br />
Net cl<strong>in</strong>ical benefit<br />
[ISR with no treatment – ISR on treatment]<br />
– 1.5*[IHR on treatment – IHR with<br />
no treatment]<br />
Abbreviations: IHR, <strong>in</strong>tracranial-hemorrhage rate;<br />
ISR, ischemic-stroke rate.<br />
non<strong>in</strong>ferior to warfar<strong>in</strong> for the primary end<br />
po<strong>in</strong>t of stroke and systemic embolism<br />
(HR 0.79, 95% CI 0.66–0.96, P