Abstract: Objective   To retrospectively analyze the relationship between abdominal aortic calcification (AAC) and arteriovenous fistula patency period after percutaneous transluminal angioplasty (PTA).  Methods   A total of 120 patients treated with PTA for the first time in Cangzhou People's Hospital from June 2018 to November 2021 were enrolled in this study. Their AAC score at the time of PTA operation were recorded. According to the AAC score, the patients were divided into high AAC group and low AAC group. Their primary AVF patency rate after PTA was followed up for 3 years. The influencing factors for primary AVF patency period after PTA were analyzed.  Results  The primary patency period was significantly shorter in high AAC group than in low AAC group (t =2.358, P=0.020). After 6, 12, 24 and 36 months, the primary AVF patency rates were 93.9%, 84.7%, 67.4% and 53.6% in low AAC group, and were 92.6%, 79.4%, 56.3% and 39.6% in high AAC group (χ2=4.827, P=0.028). Multivariate adjusted COX regression found that AAC score (HR=2.893, 95% CI:1.160～7.212, P=0.023) and AVF age (HR=0.545, 95% CI:0.320～0.928, P=0.026) were significantly associated with AVF dysfunction after PTA.  Conclusions   AAC and AVF age are important predictors for AVF restenosis after PTA.

Key words: Arteriovenous fistula, Percutaneous transluminal angioplasty, End-stage renal disease, Aortic calcification