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논문분류	춘계학술대회 초록집
제목	Role of peribrachial fat as a key determinant of brachial artery dilatation for successful arteriovenous fistula maturation in hemodialysis patients
저자	Illeon Cho, Yongseon Choi, Jaehee Song, Sunmin Kim, Jwa-Kyung Kim, Young Rim Song, Sung Gyun Kim, Hyung Jik Kim, Hyung Seok Lee
출판정보	2020; 2020(1):
키워드	arteriovenous fistula \| hemodialysis \| adipose tissue \| brachial \| maturation failure
초록	The functional quality of the inflow artery is one of the most important determinants of arteriovenous fistula (AVF) success. We evaluated the association of early optimal brachial arterial dilatation with a successful AVF maturation and assessed the role of peribrachial adipose tissue in determining brachial arterial distensibility. All patients underwent a preoperative vascular mapping with Doppler ultrasound (US), and only patients who had suitable vessels for AVF creation were enrolled (n=162). Peribrachial fat thickness was measured using US. To evaluate the degree of brachial dilatation, follow-up US was performed at 1 month after surgery, and early brachial artery dilation was defined as the change in postoperative arterial diameter compared to the preoperative value. The primary outcome was failure to achieve a clinically functional AVF within 8 weeks. Nonfunctional AVF occurred in 21 (13.0%) patients, and they had a significantly lower brachial dilatation than patients with successful AVF during early period after surgery (0.85 vs. 0.43 mm, p=0.003). Patients with a brachial dilatation greater than median level showed a 1.8-times higher rate of achieving a successful AVF than those without. The early brachial dilatation showed strong negative correlations with diabetes (r=-0.260, p=0.001), peribrachial fat thickness (r=–0.301, p=0.008), and the presence of brachial artery calcification (r= -0.178, p=0.036). Even after adjustments for demographic factors, comorbidities, and baseline brachial flow volume, peribrachial fat thickness was an independent determinant for early brachial dilatation (β=–0. 286, p=0.013). A close interplay between the peri-brachial fat and brachial dilatation can be translated into novel clinical tools to predict successful AVF maturation.
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