Ankle-Brachial Index (ABI) Calculator

This calculator helps determine the Ankle-Brachial Index (ABI), a measure used to assess the risk of peripheral artery disease. Suitable for healthcare professionals and patients alike, it provides an easy way to calculate ABI using systolic pressure measurements from the ankle and the arm.

Calculator

Results

ABI Value 0.00
Risk Level -

Data Source and Methodology

All calculations are strictly based on the guidelines provided by the American Heart Association. For more information, visit American Heart Association. All calculations are rigorously based on these sources.

The Formula Explained

ABI = \(\frac{\text{Ankle Systolic Pressure}}{\text{Arm Systolic Pressure}}\)

Glossary of Variables

How It Works: A Step-by-Step Example

Suppose the ankle systolic pressure is 110 mmHg and the arm systolic pressure is 120 mmHg. The ABI is calculated as follows:

ABI = \(\frac{110}{120} = 0.92\)

An ABI value of 0.92 indicates a mild risk for peripheral artery disease.

Frequently Asked Questions (FAQ)

What is the Ankle-Brachial Index (ABI)?

The ABI is a simple test that compares the blood pressure in your ankle with the blood pressure in your arm to assess the risk of peripheral artery disease.

Why is ABI important?

ABI is important as it helps detect peripheral artery disease which could lead to serious complications if left untreated.

What is a normal ABI value?

A normal ABI value ranges from 1.0 to 1.4. Values below 1.0 may indicate blocked arteries.

Can ABI be used for diagnosis?

ABI is a screening tool and should be used in conjunction with other assessments and clinical evaluations for diagnosis.

Is the test painful?

No, the ABI test is non-invasive and painless, involving only blood pressure measurements.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
ABI = \(\frac{\text{Ankle Systolic Pressure}}{\text{Arm Systolic Pressure}}\)
Formula (extracted text)
ABI = \(\frac{110}{120} = 0.92\)
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
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Ankle-Brachial Index (ABI) Calculator

This calculator helps determine the Ankle-Brachial Index (ABI), a measure used to assess the risk of peripheral artery disease. Suitable for healthcare professionals and patients alike, it provides an easy way to calculate ABI using systolic pressure measurements from the ankle and the arm.

Calculator

Results

ABI Value 0.00
Risk Level -

Data Source and Methodology

All calculations are strictly based on the guidelines provided by the American Heart Association. For more information, visit American Heart Association. All calculations are rigorously based on these sources.

The Formula Explained

ABI = \(\frac{\text{Ankle Systolic Pressure}}{\text{Arm Systolic Pressure}}\)

Glossary of Variables

How It Works: A Step-by-Step Example

Suppose the ankle systolic pressure is 110 mmHg and the arm systolic pressure is 120 mmHg. The ABI is calculated as follows:

ABI = \(\frac{110}{120} = 0.92\)

An ABI value of 0.92 indicates a mild risk for peripheral artery disease.

Frequently Asked Questions (FAQ)

What is the Ankle-Brachial Index (ABI)?

The ABI is a simple test that compares the blood pressure in your ankle with the blood pressure in your arm to assess the risk of peripheral artery disease.

Why is ABI important?

ABI is important as it helps detect peripheral artery disease which could lead to serious complications if left untreated.

What is a normal ABI value?

A normal ABI value ranges from 1.0 to 1.4. Values below 1.0 may indicate blocked arteries.

Can ABI be used for diagnosis?

ABI is a screening tool and should be used in conjunction with other assessments and clinical evaluations for diagnosis.

Is the test painful?

No, the ABI test is non-invasive and painless, involving only blood pressure measurements.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
ABI = \(\frac{\text{Ankle Systolic Pressure}}{\text{Arm Systolic Pressure}}\)
Formula (extracted text)
ABI = \(\frac{110}{120} = 0.92\)
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
``` ]], displayMath: [['\\[','\\]']] }, svg: { fontCache: 'global' } };, svg: { fontCache: 'global' } };

Ankle-Brachial Index (ABI) Calculator

This calculator helps determine the Ankle-Brachial Index (ABI), a measure used to assess the risk of peripheral artery disease. Suitable for healthcare professionals and patients alike, it provides an easy way to calculate ABI using systolic pressure measurements from the ankle and the arm.

Calculator

Results

ABI Value 0.00
Risk Level -

Data Source and Methodology

All calculations are strictly based on the guidelines provided by the American Heart Association. For more information, visit American Heart Association. All calculations are rigorously based on these sources.

The Formula Explained

ABI = \(\frac{\text{Ankle Systolic Pressure}}{\text{Arm Systolic Pressure}}\)

Glossary of Variables

How It Works: A Step-by-Step Example

Suppose the ankle systolic pressure is 110 mmHg and the arm systolic pressure is 120 mmHg. The ABI is calculated as follows:

ABI = \(\frac{110}{120} = 0.92\)

An ABI value of 0.92 indicates a mild risk for peripheral artery disease.

Frequently Asked Questions (FAQ)

What is the Ankle-Brachial Index (ABI)?

The ABI is a simple test that compares the blood pressure in your ankle with the blood pressure in your arm to assess the risk of peripheral artery disease.

Why is ABI important?

ABI is important as it helps detect peripheral artery disease which could lead to serious complications if left untreated.

What is a normal ABI value?

A normal ABI value ranges from 1.0 to 1.4. Values below 1.0 may indicate blocked arteries.

Can ABI be used for diagnosis?

ABI is a screening tool and should be used in conjunction with other assessments and clinical evaluations for diagnosis.

Is the test painful?

No, the ABI test is non-invasive and painless, involving only blood pressure measurements.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
ABI = \(\frac{\text{Ankle Systolic Pressure}}{\text{Arm Systolic Pressure}}\)
Formula (extracted text)
ABI = \(\frac{110}{120} = 0.92\)
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
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