What is a 'likely' Wells' score for PE?

A score greater than 4 suggests that a pulmonary embolism is likely, and further diagnostic imaging (like a CTPA) is usually indicated.

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Wells 评分 (肺栓塞)

Estimate the probability of pulmonary embolism (PE) to guide diagnostic testing and patient care.

Pulmonary Embolism (PE) can be a silent and deadly condition. Because its symptoms (like shortness of breath and chest pain) overlap with many other diseases, doctors use the Wells' Score to determine the pre-test probability of PE. This prevents unnecessary, expensive, and radiation-heavy testing for low-risk patients while ensuring high-risk patients get the imaging they need immediately.

Clinical signs/symptoms of DVT+3.0 Points

PE is #1 diagnosis or equally likely+3.0 Points

Heart rate > 100 bpm+1.5 Points

Immobilization or surgery in past 4 weeks+1.5 Points

Previous PE or DVT+1.5 Points

Hemoptysis+1.0 Points

Malignancy (treated/palliative in 6mo)+1.0 Points

Wells' Score

0.0points

Low Probability

PE probability is low (approx. 1.3%). Consider using a D-dimer test to rule out PE.

Medical Disclaimer: This tool is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

Evidence & References

Wells PS, et al. Derivation of a simple clinical model to categorize patients probability of pulmonary embolism: clinical experience with a 7-item model. Ann Intern Med. 2001.

工作原理

The tool weighs several clinical findings—such as signs of deep vein thrombosis (DVT), heart rate, and history of previous clots. It sums these weighted points to provide a probability category.

计算公式

Weighted sum of clinical criteria

计算示例

1. **Likely**: Tachycardia (1.5) + PE most likely (3.0) = **4.5**.

为什么在日常生活中使用这个工具？

通过概率实现安全。这项服务是诊断算法的重要组成部分，有助于防止对健康患者的过度检测，同时确保永远不会遗漏危及生命的血栓。通过概率实现安全。这项服务是诊断算法的重要组成部分，有助于防止对健康患者的过度检测，同时确保永远不会遗漏危及生命的血栓。

常见问题解答

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