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HAS-BLED for AF

HAS-BLED for AF: calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.

ℹ Reference calculation based on the published method. It does not replace a clinical examination or a doctor's decision.

HAS-BLED for AF

Hypertension (SBP > 160 mmHg) (1 = yes)
Abnormal renal function (1 = yes)
Abnormal liver function (1 = yes)
Prior stroke (1 = yes)
Prior bleeding or predisposition (1 = yes)
Labile INR (1 = yes)
Age > 65 years (1 = yes)
Antiplatelet drugs or NSAIDs (1 = yes)
Alcohol ≥ 8 drinks per week (1 = yes)
HAS-BLED score
1
If ≥ 3 points: correct modifiable factors and follow up more closelyHAS-BLED for AF: calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.
Bleeding risk
Moderate
Major bleeds per 100 patient-years
1.02

More about: HAS-BLED for AF

What it calculates

The “HAS-BLED for AF” calculator computes HAS-BLED score from 9 parameters: hypertension (sbp > 160 mmhg) (1 = yes), abnormal renal function (1 = yes), abnormal liver function (1 = yes), prior stroke (1 = yes), prior bleeding or predisposition (1 = yes), labile inr (1 = yes), age > 65 years (1 = yes), antiplatelet drugs or nsaids (1 = yes), alcohol ≥ 8 drinks per week (1 = yes).

Used by professionals and patients to assess health metrics, dosages, and risks.

Example calculation

With parameters Hypertension (SBP > 160 mmHg) (1 = yes) = 0, Abnormal renal function (1 = yes) = 0, Abnormal liver function (1 = yes) = 0, Prior stroke (1 = yes) = 0, Prior bleeding or predisposition (1 = yes) = 0, Labile INR (1 = yes) = 0, Age > 65 years (1 = yes) = 1, Antiplatelet drugs or NSAIDs (1 = yes) = 0, Alcohol ≥ 8 drinks per week (1 = yes) = 0 the result is 1 (If ≥ 3 points: correct modifiable factors and follow up more closely).

How to use

  1. Enter hypertension (sbp > 160 mmhg) (1 = yes), abnormal renal function (1 = yes), abnormal liver function (1 = yes), prior stroke (1 = yes), prior bleeding or predisposition (1 = yes), labile inr (1 = yes), age > 65 years (1 = yes), antiplatelet drugs or nsaids (1 = yes) and alcohol ≥ 8 drinks per week (1 = yes) — each field above is adjustable with a slider.
  2. HAS-BLED score is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is BMI calculated?
BMI = weight (kg) / height (m)². Example: 70 kg / (1.75 m)² = 22.9. The WHO normal range is 18.5–24.9; below that is underweight, 25–29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
No. BMI does not distinguish muscle from fat, so athletes may show a high BMI with low body fat. It is also less reliable for teenagers, pregnant people, older adults, and very tall or short individuals.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese class I: 30–34.9; class II: 35–39.9; class III: 40+.
What is a better measure than BMI?
Body fat percentage, waist-to-height ratio (aim for under 0.5), and waist circumference give a clearer picture of health than BMI alone.

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