• Rashid Usman CMH Lahore Medical College and CMH Hospital Lahore
  • Hammad Malik CMH Lahore Medical College
  • Mudassar Mehmood CMH Lahore Medical College
  • Muhammad Waseem Anwar CMH Lahore Medical College
  • Amna Shahab CMH Lahore Medical College


Background: There are not many error proof clinical scores to assess the native dialysis access. CAVeA2T2 score is a recent tool in use. Objective of the study is to assess the clinical utility of CAVeA2T2 scoring system in predicting the survival rate of brachiocephalic arteriovenous fistula (BC-AVF). Methods: All consecutive patients fulfilling the inclusion criteria for BC-AVF from January 2016 to January 2018 were included. According to their CAVeA2T2 score they were divided into two groups (Group A: < 2 and Group B: ≥2). Cumulative primary and secondary patency survival of BC-AVF for both groups were measured. Results: A total of 112 BC-AVFs were analysed. Mean age was 42±SD 14 years (M: F =5:1). Mean CAVeA2T2 score was 1.45±1.8. In terms of primary patency, there was no statistically significant difference between two groups (p=0.074, p = 0.229 and p=0.357 at 6 weeks, 6 months and 12 months respectively). However, the difference was significant in terms of secondary patency (p=0.002, p=0.036 and p=0.032 at 6 weeks, 6 months and 12 months respectively). On comparing the cumulative survival between two groups; a significantly low primary patency rate survival (Log Rank x2 = 12.9, p-value = 0.001) and secondary patency rate survival (Log Rank x2 = 7.6, p-value = 0.001) of BC-AVF was found in Group B. Conclusion: We found CAVeA2T2 score an easily applicable and useful tool to assess the patency and survival of BC-AVF. Patients have a poor patency and significantly low survival rate when their CAVeA2T2 score was ≥2.Keywords: Fistula survival; Patency rate; Score; Arteriovenous fistula

Author Biographies

Rashid Usman, CMH Lahore Medical College and CMH Hospital Lahore

Assistant Professor of SurgeryDepartment of SurgeryCMH Lahore Medical College

Hammad Malik, CMH Lahore Medical College

Department of Surgery

Mudassar Mehmood, CMH Lahore Medical College

Assistant Professor of SurgeryDepartment of SurgeryCMH Lahore Medical College

Muhammad Waseem Anwar, CMH Lahore Medical College

Assistant Professor of SurgeryDepartment of SurgeryCMH Lahore Medical College

Amna Shahab, CMH Lahore Medical College

Associate Professor of SurgeryDepartment of SurgeryCMH Lahore Medical College


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