Factors associated with long-term graft patency after lower extremity arterial bypasses

Area of Science:

• Vascular Surgery
• Cardiovascular Medicine
• Medical Technology

Background:

• Chronic arterial occlusive disease (CAOD) significantly impacts lower extremity health.
• Lower extremity arterial bypass (LEAB) is a critical intervention for limb salvage.
• Optimizing long-term graft patency is essential for successful LEAB outcomes.

Purpose of the Study:

• To identify key factors associated with sustained graft patency following LEAB.
• To differentiate variables correlating with short-term (<2 years) versus long-term (≥5 years) graft survival.
• To inform clinical decision-making for patients undergoing LEAB for CAOD.

Main Methods:

• Retrospective review of a single institution's LEAB database for CAOD patients.
• Comparison of demographic, clinical, and procedural variables between short-term and long-term patency groups.
• Application of univariable and multivariable analyses to identify independent predictors of graft patency.

Main Results:

• Multivariable analysis identified hypertension, claudication, absence of prior intervention, vein graft use, above-the-knee bypass, and graft salvage procedures as independent predictors of long-term patency.
• Univariable analysis also highlighted younger age and statin use as associated with better outcomes.
• Specific odds ratios were calculated for each independent factor, indicating their relative impact on graft survival.

Conclusions:

• Several modifiable and non-modifiable factors significantly influence long-term graft patency after LEAB.
• These identified factors provide valuable insights for surgical planning and patient selection.
• Consideration of these factors can potentially improve treatment strategies and outcomes for CAOD patients.