Ciências Pneumológicas Post-Graduation Program, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.
Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil.
Blood Purif. 2022;51(9):732-738. doi: 10.1159/000519880. Epub 2021 Nov 19.
A healthy arteriovenous fistula (AVF) depends on adequate vessel diameter which can be maintained through aerobic exercises. A randomized crossover study was conducted to evaluate the acute effects of aerobic exercise on a cycle ergometer on AVF vascular diameter, through ultrasound, and on blood pressure (BP).
Eight hemodialysis (HD) patients completed 2 different occasions in random order with a 7-day washout: (a) exercising moment, in which 30-min aerobic exercise was performed on a cycle ergometer; and (b) resting moment, which was performed 30-min with the patient sitting in a chair. Both occasions were evaluated 1-h before the second weekly HD day.
A significant increase in AVF vascular diameter induced by 30-min aerobic exercise was found (1.15 ± 0.56 to 1.47 ± 0.66 cm; p = 0.042), whereas systolic (p = 0.105) and diastolic BP (p = 0.366) did not change.
We can conclude that acute aerobic exercise was shown to be effective in improving the AVF vascular diameter in HD patients. The aerobic exercise benefits in endothelium-dependent vasodilation which may be an effective, practical, and economic strategy to maintain AVF patency.
健康的动静脉瘘（AVF）依赖于足够的血管直径，而这可以通过有氧运动来维持。本随机交叉研究旨在通过超声评估有氧踏车运动对 AVF 血管直径和血压（BP）的急性影响。
8 名血液透析（HD）患者以 7 天洗脱期的顺序随机完成 2 种不同的情况：（a）运动时刻，在有氧踏车运动 30 分钟；（b）休息时刻，患者坐在椅子上 30 分钟。这两种情况均在每周第二次 HD 治疗前 1 小时进行评估。
发现 30 分钟有氧运动可显著增加 AVF 血管直径（1.15±0.56 至 1.47±0.66cm；p=0.042），而收缩压（p=0.105）和舒张压（p=0.366）没有变化。
我们可以得出结论，急性有氧运动可有效改善 HD 患者的 AVF 血管直径。有氧运动有益于内皮依赖性血管扩张，这可能是维持 AVF 通畅的一种有效、实用且经济的策略。
