RISK CALCULATORS: HAS-BLED

HAS-BLED is a simple bleeding risk assessment tool for patients with atrial fibrillation (AF).

It is included in the European Society of Cardiology Guidelines for the Management of Atrial Fibrillation published in 2010.

Select the risk factors that apply to your patient to calculate the HAS-BLED bleeding risk score.

Hypertension
+1 point
Abnormal Renal function
+1 point
Abnormal Liver function
+1 point
Stroke
+1 point
Bleeding
+1 point
Labile INRs
+1 point
Elderly (age >65 years)
+1 point
Drugs
+1 point
Alcohol
+1 point

Hypertension: systolic blood pressure >160 mm Hg; Abnormal renal function: presence of chronic dialysis or renal transplantation or serum creatinine ≥200 μmol; abnormal hepatic function: chronic hepatic disease or biochemical evidence of significant hepatic derangement (e.g., bilirubin >2x upper limit of normal, in association with aspartate aminotransferase/alanine aminotransferase/alkaline phosphatase >3x upper limit of normal, etc.); “Bleeding” refers to previous bleeding history and/or predisposition to bleeding (e.g., bleeding diathesis, anemia); “Labile INRs” refers to unstable/high INRs or poor time in therapeutic range (e.g., <60%); Drugs/alcohol use refers to concomitant use of drugs, such as antiplatelet agents, nonsteroidal anti-inflammatory drugs, alcohol abuse, etc.

Risk assessment

Risk assessment

Here you can find validated, interactive tools to help you calculate stroke and bleeding risk of your patients

About the Coagulation Center

The Coagulation Center is an educational resource for healthcare professionals. Guided by a global editorial board of experts, the Coagulation Center offers a range of clinical perspectives on balancing the benefit and risk of anticoagulation in a rapidly changing landscape. Within the Coagulation Center you will find roundtable discussions on anticoagulation management, materials for patient management including patient case studies, tools to help evaluate bleeding risk and stroke risk, and downloadable resources for your practice.