A high CHA(2)DS(2)-VASc score is associated with a high risk for critical limb ischemia in peripheral arterial occlusive disease patients

Area of Science:

• Vascular Medicine
• Cardiology
• Risk Stratification

Background:

• The CHA(2)DS(2)-VASc score is established for predicting stroke in atrial fibrillation patients.
• It incorporates multiple vascular risk factors, prompting investigation into its utility for other vascular conditions.
• Peripheral arterial occlusive disease (PAOD) shares risk factors with stroke, necessitating evaluation of predictive scores.

Purpose of the Study:

• To evaluate the CHA(2)DS(2)-VASc score's association with critical limb ischemia (CLI) in PAOD patients.
• To determine if the CHA(2)DS(2)-VASc score can predict CLI independently of atrial fibrillation.
• To analyze the individual components of the CHA(2)DS(2)-VASc score for their predictive value in CLI.

Main Methods:

• Retrospective analysis of 2237 PAOD patients treated between 2005 and 2010.
• Calculation of CHA(2)DS(2)-VASc scores for all included patients.
• Investigation of the correlation between CHA(2)DS(2)-VASc scores and the occurrence of CLI, including analysis of individual score components.

Main Results:

• A higher CHA(2)DS(2)-VASc score was significantly associated with an increased frequency of CLI.
• Specific factors like age (≥75 years and 65-75 years), type 2 diabetes, and prior stroke/TIA/thromboembolism increased CLI risk.
• Arterial hypertension showed a protective effect against CLI (OR 0.6), while sex and congestive heart failure were not significantly associated with CLI risk.

Conclusions:

• The CHA(2)DS(2)-VASc score is a valuable tool for predicting critical limb ischemia risk in PAOD patients.
• Individual components of the score have varying predictive power for CLI, with some demonstrating a protective effect.
• Further research is warranted to develop a refined risk score specifically for CLI prediction in PAOD, potentially excluding non-contributory or protective factors.