VAI TRÒ CỦA CHỈ SỐ ABI TRONG CHẨN ĐOÁN VÀ ĐIỀU TRỊ BỆNH TẮC ĐỘNG MẠCH MẠN TÍNH CHI DƯỚI

Abstract

Objective: To evaluate the relationship between ABI (Ankle Brachial Index) with clinical symptoms and imaging findings in diagnosing chronic lower extremity arterial occlusion disease (CLEAOD) requiring surgery, and to assess the role of ABI in evaluating surgical treatment outcomes. Methods: A prospective, descriptive case series study on 91 patients diagnosed with CLEAOD at Cho Ray Hospital and University Medical Center HCMC from July 2013 to April 2014. Patients were evaluated for ABI before and after surgery, and correlations between ABI and clinical symptoms and imaging findings were investigated. Results: Mean age was 68±15.07; males accounted for 79.1%. Average ABI before surgery was 0.26±0.23 and after surgery 0.76±0.25 (p<0.001). When ABI<0.4, most patients were in Fontaine stages III and IV (92.3% and 92.5%); when 0.4≤ABI<0.75, most were in Fontaine stage IIB (92%). ABI values decreased with increasing number of arteries affected and severity according to TASC classification. After surgery, ABI increased significantly, with good results when ABI>0.75, fair when ABI>0.4, and failure when ABI<0.4. Conclusion: ABI is valuable in diagnosing, assessing the severity, and monitoring surgical treatment outcomes of CLEAOD. Preoperative ABI≥0.4 is a good prognostic factor for surgical outcomes.