Wells' Criteria for DVT and PE Calculator

Calculate the probability of deep vein thrombosis (DVT) and pulmonary embolism (PE) using the Wells' Criteria.

Full original guide (expanded)

Wells' Criteria for DVT and PE Calculator

Estimate pretest probability for DVT or PE by selecting the applicable Wells criteria and reviewing the score bands.

Calculator

Results

Data Source and Methodology

The Wells' Criteria are based on the following authoritative source: Wells PS, et al. "Use of a clinical model for safe management of patients with suspected pulmonary embolism." Ann Intern Med. 1998;129(12):997-1005. All calculations are strictly based on the formulas and data provided by this source.

The Formula Explained

The Wells' Criteria use a scoring system to evaluate the likelihood of DVT and PE. The formula is:
Score = Clinical signs + Heart rate + Immobilization + ...

Glossary of Terms

  • Clinical signs of DVT: Swelling, pain, or tenderness in the legs.
  • Heart rate above 100 bpm: Tachycardia or elevated pulse rate.
  • Immobilization: Limited movement due to surgery or injury.

How It Works: A Step-by-Step Example

Consider a patient with the following inputs: Clinical signs present (1), Heart rate above 100 bpm (1), Recent immobilization (1). The Wells' score would be calculated as 3, indicating a high probability of DVT/PE.

Frequently Asked Questions (FAQ)

What is the Wells' Criteria?

It is a clinical tool used to assess the probability of DVT and PE in patients.

How accurate is the Wells' Criteria?

It is widely used and validated in clinical settings, but should be used in conjunction with other diagnostic methods.

Can the Wells' Criteria be used for all patients?

It is most applicable for patients with symptoms suggestive of DVT or PE. Always consult with a healthcare professional.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
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

Wells' Criteria for DVT and PE Calculator

Estimate pretest probability for DVT or PE by selecting the applicable Wells criteria and reviewing the score bands.

Calculator

Results

Data Source and Methodology

The Wells' Criteria are based on the following authoritative source: Wells PS, et al. "Use of a clinical model for safe management of patients with suspected pulmonary embolism." Ann Intern Med. 1998;129(12):997-1005. All calculations are strictly based on the formulas and data provided by this source.

The Formula Explained

The Wells' Criteria use a scoring system to evaluate the likelihood of DVT and PE. The formula is:
Score = Clinical signs + Heart rate + Immobilization + ...

Glossary of Terms

  • Clinical signs of DVT: Swelling, pain, or tenderness in the legs.
  • Heart rate above 100 bpm: Tachycardia or elevated pulse rate.
  • Immobilization: Limited movement due to surgery or injury.

How It Works: A Step-by-Step Example

Consider a patient with the following inputs: Clinical signs present (1), Heart rate above 100 bpm (1), Recent immobilization (1). The Wells' score would be calculated as 3, indicating a high probability of DVT/PE.

Frequently Asked Questions (FAQ)

What is the Wells' Criteria?

It is a clinical tool used to assess the probability of DVT and PE in patients.

How accurate is the Wells' Criteria?

It is widely used and validated in clinical settings, but should be used in conjunction with other diagnostic methods.

Can the Wells' Criteria be used for all patients?

It is most applicable for patients with symptoms suggestive of DVT or PE. Always consult with a healthcare professional.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
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

Wells' Criteria for DVT and PE Calculator

Estimate pretest probability for DVT or PE by selecting the applicable Wells criteria and reviewing the score bands.

Calculator

Results

Data Source and Methodology

The Wells' Criteria are based on the following authoritative source: Wells PS, et al. "Use of a clinical model for safe management of patients with suspected pulmonary embolism." Ann Intern Med. 1998;129(12):997-1005. All calculations are strictly based on the formulas and data provided by this source.

The Formula Explained

The Wells' Criteria use a scoring system to evaluate the likelihood of DVT and PE. The formula is:
Score = Clinical signs + Heart rate + Immobilization + ...

Glossary of Terms

  • Clinical signs of DVT: Swelling, pain, or tenderness in the legs.
  • Heart rate above 100 bpm: Tachycardia or elevated pulse rate.
  • Immobilization: Limited movement due to surgery or injury.

How It Works: A Step-by-Step Example

Consider a patient with the following inputs: Clinical signs present (1), Heart rate above 100 bpm (1), Recent immobilization (1). The Wells' score would be calculated as 3, indicating a high probability of DVT/PE.

Frequently Asked Questions (FAQ)

What is the Wells' Criteria?

It is a clinical tool used to assess the probability of DVT and PE in patients.

How accurate is the Wells' Criteria?

It is widely used and validated in clinical settings, but should be used in conjunction with other diagnostic methods.

Can the Wells' Criteria be used for all patients?

It is most applicable for patients with symptoms suggestive of DVT or PE. Always consult with a healthcare professional.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
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
Formulas

(Formulas preserved from original page content, if present.)

Version 0.1.0-draft
Citations

Add authoritative sources relevant to this calculator (standards bodies, manuals, official docs).

Changelog
  • 0.1.0-draft — 2026-01-19: Initial draft (review required).